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49results about How to "Avoid chemical corrosion" patented technology
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Environment-friendly water-based fire extinguishant for forest fire fighting airplane and preparation method of environment-friendly water-based fire extinguishant
ActiveCN107456695AOvercoming Chemical CorrosionProtect the ecological balanceFire extinguisherForest vegetationAirplane
The invention discloses an environment-friendly water-based fire extinguishant for a forest fire fighting airplane and a preparation method of the environment-friendly water-based fire extinguishant. The preparation method comprises the following steps of firstly, mixing and stirring macromolecular water absorbing resin and a flow promoter and keeping the temperature rise of powder to be not higher than 10 DEG C; then adding a colorant to mix and stir to prepare composition powder with good flowability; and injecting the composition powder driven by compressed nitrogen into water by means of pipeline conveyance, wherein jet flows entering the water generate a lot of micro nitrogen bubbles which promote powder particles to be quickly dispersed in water, the single particles are in full contact with water in a suspended form, and the particles absorb a lot of water molecules to quickly generate a hydrogel fire extinguishant which has a very good adhesive force to forest vegetation, so that the fire extinguishing efficiency of the water is greatly enhanced. The hydrogel fire extinguishant does not corrode metal parts of the airplane and is bio-environment-friendly to the forest.
Owner:SHANDONG GUOTAI TECH
Production process for high-quality high-finish titanium and titanium alloy sheet or belt
InactiveCN101745795AAvoid damageAvoid chemical corrosionMetal rolling arrangementsTitaniumTitanium alloy
The invention relates to a production process of a high-quality high-finish titanium and titanium alloy sheet or belt, which is carried out according to the following flow: heating after coating glass powder, hot rolling, polishing by a polishing machine, rolling in cold and reserving 5-15% machining allowance, vacuum annealing, polishing, rolling in cold and polishing to a mirror surface. In the invention, a general atmosphere furnace or electric furnace in the annealing process of the rolling process of the original technology is changed into a vacuum furnace or cover-type furnace and certain coating protection is carried out on the surface, after 5-10% of machining allowance is reserved, preannealing is carried out in advance, and then mill machining and leveling of the final one pass are carried out. The accuracy of the obtained machined sheet is increased by 5%-20% and the degree of finish is improved by 5%-50%.
Owner:常荣波
Pipeline cleaning device and cleaning method
ActiveCN112452959AObjective cleanliness statusObjectively determine cleanliness statusHollow article cleaningDrying gas arrangementsParticulatesLiquid state
The invention discloses a pipeline cleaning device. The pipeline cleaning device comprises a flow collecting cavity body provided with an installation connector, a gas working medium source for providing a gas-state cleaning working medium, a liquid working medium source for providing a liquid-state cleaning working medium and a particulate matter detection unit for detecting cleanliness, whereina cleaned pipeline can be connected with the flow collecting cavity body in a sealed mode through the installation connector; and the gas working medium source communicates with the flow collecting cavity body through a gas pipeline, the liquid working medium source is connected with the flow collecting cavity body through a liquid flow channel provided with a liquid pump, and the liquid working medium source can provide the liquid-state cleaning working medium for the cleaned pipeline through the flow collecting cavity body. The invention further discloses a cleaning method applying the pipeline cleaning device. The cleaning device and the cleaning method have the advantages of being high in cleaning efficiency, high in intelligent degree, scientific in cleaning strategy, and capable of meeting the need of cleaning for various types of pipelines and the like; and the fluid pipeline cleaning device further has the advantages of being good in responsiveness, long in service life, safe and reliable in system and the like.
Owner:潍坊嘉腾液压技术有限公司
Manufacturing method of coating for temporary protection of metal surface
The invention discloses a method for manufacturing a paint for temporary protection on the metal surface, which comprises the following steps: dissolving 30%-40% chloroacetic resin powder with alcohol solvent; dissolving 20% cellulose acetate butyrate with butyl acetate and dimethylbenzene mixed solvent; mixing dissolved chloroacetic resin and cellulose acetate butyrate according to 2:1-3:1; adding 0.5% dimethyl silicon oil; mixing homogeneously; adding deflocculating agent (butyl alcohol:butyl acetate=1:1). The invention is provided with adhesive force and striping property, which avoids the chemical corrosion of the metal.
Owner:TIANJIN ZHENDONG PAINTS CO LTD
Round comb
The invention relates to a round comb, which comprises comb teeth, a comb frame and a handle, wherein the comb frame is made of metal materials and adopts a hollow design, a plurality of small three-dimensional ventilation air holes are arranged on the comb frame, the comb teeth are ranged on the comb frame in a spiral shape, the comb teeth are made of ceramic materials, pig horsehair is arranged on the comb teeth, the ceramic comb teeth are adopted, the hot air diffusion is fast, the instantaneous heat conduction can be realized, the cleaning is easy, the metal comb frame is adopted, the heat energy can be uniform, in addition, the chemical corrosion can be avoided, the pig horsehair is used as the comb hair, the hair can be bright, in addition, the scalp cannot be injured, the comb teeth are ranged in the spiral type, the grasping force is strong, and the round comb is suitable for being used for modeling. The handle adopts a carbon element antistatic handle, softness and comfort are realized, in addition, projected anti-slip veins are arranged on the handle, in addition, the comb frame is in a hollow type, users can easily hold the comb, the labor is saved, the three-dimensional ventilation air holes are arranged on the comb frame, and the nonuniform heating is avoided.
Owner:钱燕芳
Obstructive explosionproof composite and preparation method thereof
InactiveCN110385249AHigh performance against corrosion and protectionImprove corrosion resistancePretreated surfacesElectrophoretic coatingsCorrosion preventionHoneycomb
The invention discloses an obstructive explosionproof composite and a preparation method thereof. Honeycomb aluminum foil or honeycomb paper foil is used as a structural base material, and after the surface of the structural base material is coated with a coating having corrosion prevention and electric conduction function, the problems that existing metal obstructive explosionproof materials areeasy to corrode and short in use life, and cannot be used in dynamic fuel storage vessels are solved. When the honeycomb paper foil is used as the structural base material, production cost of an existing obstructive explosionproof material system can be substantially reduced, and the obtained obstructive explosionproof composite is suitably applied to large oil material storage vessels, and simultaneously the preparation method of the obstructive explosionproof composite facilitates large area popularization and usage of the obstructive explosionproof composite.
Owner:通化市安泰防爆科技有限公司
Zinc nickel and nickel tungsten electroplating liquid, and preparing method and electroplating method of electroplating liquid
The invention relates to the field of electroplating, and provides zinc nickel and nickel tungsten electroplating liquid and a preparing method and an electroplating method of the electroplating liquid. Raw materials of each liter of electroplating liquid comprise 10 to 35g of nickel sulfate, 45 to 70g of sodium hydroxide, 3 to 12g of sodium tungstate, 5 to 12g of zinc powder, 0.1 to 1.5g of an addition agent A, 0.1 to 0.8g of an addition agent B, 15 to 50 g of a complexing agent and the balance deionized water. The electroplating method comprises the steps that a pure iron plate serves as ananode, a part to be electroplated serves as a cathode, the anode and the cathode are inserted in the zinc nickel and nickel tungsten electroplating liquid, under the first current density, electroplating is carried out, then, the first current density is converted into second current density with the current density higher than the first current density, electroplating is carried out, and a zinc nickel and nickel tungsten dual-layer plating can be obtained. The dual-layer plating can be obtained at one time, and the dual-layer plating can be used for preventing chemical corrosion, electrochemical corrosion and physical wear at the same time.
Owner:SHENGLI OILFIELD SHENGJI PETROLEUM EQUIP
Draining pump with impeller of small hub ratio
PendingCN109595179AImprove flow capacityReasonable structureGeometric CADPump componentsImpellerStator
The invention belongs to the field of draining pumps and particularly relates to a draining pump with an impeller of a small hub ratio. The draining pump comprises the impeller and a drive part for driving the impeller to rotate, wherein the impeller has a small hub ratio. The draining pump further comprises a shell. The drive part comprises a stator component fixed on the shell, and a rotor component matched with the stator component. The rim of the impeller of the small hub ratio is fixedly connected with the inner wall of the rotor component, and rotates along with the rotor component. Themiddle of the impeller of the small hub ratio is hollow. The draining pump has the beneficial effects that the impeller of the small hub ratio has reasonable structure and good impeller of the small hub ratio; while the flow and lift meet the requirements of design conditions, the draining pump has the advantages that compared with a traditional structure, the hub size is reduced by about 64%, theexternal diameter of the impeller is reduced by about 13%, the discharge capacity of the impeller is remarkably improved, the sectional area of a runner is enlarged under the condition of the same inlet diameter, and thus the hydraulic efficiency of the draining pump is improved.
Owner:HEFEI UNIV OF TECH
Traditional Chinese medicine therapy cupping jar intelligent operation device
InactiveCN103110987APrecise temperature controlGood curative effectMedical devicesSuction devicesTemperature controlMicrocomputer
The invention discloses a traditional Chinese medicine therapy cupping jar intelligent operation device. One or multiple inner pots, a pot cover, a microcomputer chip singlechip controller, a heating disc, a temperature controller, a timer, an alarm apparatus, an intelligent control panel and a power source are arranged on a main body base, the intelligent control panel and the power source are arranged on the outer portion of the main body base, the inner pots are arranged on the center of the main body base, the pot cover is arranged on the top of the main body base, and the heating disc, the temperature controller, the timer and the alarm apparatus are arranged at the bottom of the main body base. The temperature controller, the timer and the alarm apparatus are arranged below the heating disc, the microcomputer chip singlechip controller, the heating disc, the temperature controller, the timer and the alarm apparatus are connected inside the device, the outer portion is connected with a power source line and the intelligent control panel, a medicine boiling area is arranged on the inner pots, and a medicine jar area is arranged on the outer portion of the medicine boiling area. The traditional Chinese medicine therapy cupping jar intelligent operation device solves the problems that traditional Chinese medicine jar technology is poor in curative effect, unstable, high in burning risk, unsafe, irregular in operation, unhygienic, unbeautiful, low in working efficiency and the like.
Owner:上海市浦东新区中医医院
IGBT structure and preparation method thereof
ActiveCN103887248AImprove reliabilityReliable performanceSemiconductor/solid-state device detailsSolid-state devicesMoisture resistancePolyimide membrane
The invention brings forward an IGBT structure and a preparation method thereof. The IGBT structure comprises a main chip and a protection layer. The protection layer further comprises a silicon nitride film formed on the main chip and a polyimide film formed on the silicon nitride film. The IGBT structure is provided with the silicon nitride and polyimide film composite protection layer, and the composite layer employs a secondary photoetching process so that good film quality of each film is ensured, quite good mechanical property, corrosion resistance property, moisture resistance property and external ion resistance property are provided, and manufactured devices are stable and reliable.
Owner:BYD SEMICON CO LTD
Novel exhaust valve
InactiveCN105318062AAvoid burns to workersExtended service lifeVenting valvesExhaust valveEngineering
The invention provides a novel exhaust valve capable of preventing splashing. The novel exhaust valve comprises a valve body, a mounting port, an exhaust port, a floating cavity, a floating ball, a connection rod, a liquid, gas, a liquid storage box, a liquid discharge port, a mounting rack and a hemispherical baffle, wherein the mounting port is formed in the lower end of the valve body; the upper end of the valve body is the exhaust port; the inner cavity of the valve body is the floating cavity; the floating ball is arranged in the floating cavity; the connection rod is arranged at the upper end of the floating ball and connected with the lower end of the exhaust port where the connection rod is inserted; a liquid and gas are accommodated in the floating cavity; the gas is located above the liquid; the liquid storage box is arranged at the upper end of the exhaust port. The liquid storage box is additionally arranged at the upper end of the exhaust port, the spherical baffle is mounted in the liquid storage box and can disperse exhaust gas flow, the situation that workers are harmed by high-temperature gas flow sprayed out at a high speed is avoided, and the safety and the stability are high.
Owner:天津市精沃阀门科技有限公司
A port intelligent defense barrier system and its control method
ActiveCN111877252BRealize all-round defenseThere will be no safety hazards of entanglementWaterborne vesselsMarine site engineeringControl systemSignal generator
The invention discloses a port intelligent defense barrier system and a control method thereof, and relates to the technical field of port electronic protection. The concrete base of the system is set on both sides of the port, the floating door is placed horizontally on the water surface of the port, and one end is fixedly connected to the corresponding concrete base, and the other end is movably connected to the corresponding concrete base; the top of the floating door connection unit on the water is provided with Lifting the winch, the defense net is woven by photoelectric composite cables, the top of which is connected to the floating door on the water, and the bottom is anchored on the seabed through the counterweight anchor chain, and the tension sensor is set on the counterweight anchor chain; the defense net is connected with the The lifting winch is connected; the traction system is set on the top of the concrete base, the movable end of the traction cable of the floating gate traction winch bypasses the traction pulley and connects with the movable end of the floating gate on the water, and the control cabinet is connected with the signal of the traction winch of the floating gate; the control system consists of VTS control center, It consists of a signal generator, a signal analysis and detection device, a signal processing module, a signal receiving device and an alarm system.
Owner:云南保利天同水下装备科技有限公司
Fluid pipeline cleaning device and cleaning method applying same
ActiveCN112452960AImprove cleaning efficiencySpeed up overflowHollow article cleaningDrying gas arrangementsLiquid stateProcess engineering
The invention discloses a fluid pipeline cleaning device. The fluid pipeline cleaning device comprises a flow collecting cavity body provided with an installation connector, a gas working medium source for providing a gas-state cleaning working medium and a liquid working medium source for providing a liquid-state cleaning working medium, wherein a cleaned pipeline can be connected with the flow collecting cavity body in a sealed mode through the installation connector; the gas working medium source communicates with the flow collecting cavity body through a gas pipeline, the liquid working medium source is connected with the flow collecting cavity body through a liquid flow channel provided with a liquid pump, and the liquid working medium source can provide the liquid-state cleaning working medium for the cleaned pipeline through the flow collecting cavity body; and the liquid-state cleaning working medium has a forward cleaning state and a reverse cleaning state. The invention further discloses a cleaning method applying the cleaning device. The cleaning device and the cleaning method have the advantages of being high in cleaning efficiency, high in intelligent degree, scientific in cleaning strategy, and capable of meeting the need of cleaning for various types of pipelines and the like; and the cleaning device further has the advantages of being good in responsiveness, long in service life, safe and reliable in system and the like.
Owner:潍坊嘉腾液压技术有限公司
Cadmium telluride solar cell with Te-Ti-Cu pre-set layer
InactiveCN104124290AAchieve ohmic contactInhibited DiffusionPhotovoltaic energy generationSemiconductor devicesOhmic contactContact layer
A cadmium telluride solar cell with a Te-Ti-Cu pre-set layer utilizes the pre-set Te-Ti-Cu layer of a periodic structure, and the pre-set Te-Ti-Cu layer is arranged on the back surface of an absorption layer of the cadmium telluride solar cell to be used as a back contact layer and a back electrode material of the cadmium telluride solar cell. The cadmium telluride solar cell with the Te-Ti-Cu pre-set layer can restrain copper diffusion on the material configuration and material property, eliminate the negative impact brought by copper diffusion, realize ohmic contact, avoid chemical corrosion and alone deposition of other metals as electrodes, reduce device production processes, enhance the photoelectric conversion efficiency of the solar cell and improve the long-term stability of devices.
Owner:SICHUAN UNIV
Fixed abrasive polishing pad and dry polishing method for deliquescent crystal lanthanum bromide
ActiveCN112936070AGuaranteed surface qualityAvoid scratchesPolishing machinesPolishing compositions with abrasivesPtru catalystChemical reaction
The invention provides a fixed abrasive polishing pad and a dry polishing method for deliquescent crystal lanthanum bromide. The fixed abrasive polishing pad comprises a reactant, a catalyst, abrasive particles, a curing agent and a binding agent. According to the polishing method, the fixed abrasive polishing pad is used for polishing lanthanum bromide crystals and dry fixed abrasive polishing without liquid polishing media is adopted. The reactant and the lanthanum bromide crystals are subjected to a solid-phase chemical reaction under the action of the catalyst to generate a transition layer, the transition layer is removed under the mechanical action of the abrasive particles and the polishing pad, and a smooth surface can be obtained. The problems that the lanthanum bromide crystals can be easily dissolved in water and easily cracked after absorbing water in the polishing process are solved, the material utilization rate is high, the machining cost is low, the surface quality of the lanthanum bromide crystals is improved, chemical corrosion to polishing equipment by the liquid polishing media is avoided, and environmental pollution can be avoided.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
Method for preparing composite magnet from surface tinned magnetic powder through hot embossing
ActiveCN103736995AIncrease contentImprove antioxidant capacityLiquid/solution decomposition chemical coatingInductances/transformers/magnets manufactureTinningChemical plating
The invention discloses a method for preparing a composite magnet from a surface tinned magnetic powder through hot embossing. The method includes the steps of covering the magnetic powder unoiled and activated previously with a low-melting-point metal tin coating by an electroplating technique or chemical plating technique method in a plating tank in which an alkaline plating solution containing tin ions is held, and then obtaining the magnetic powder covered with the tin coating through separating, washing and purifying, and preparing the tinned magnetic power into the composite magnet by the way of hot embossing. Due to the adoption of the method, the problems of easy aging, easy shrinking, easy water absorption and poor organic solvent resisting capability of the composite magnetic with a thermosetting resin as an adhesive are effectively improved; the tin coating is enabled to cover the particles of the magnetic powder in advance; the distribution uniformity of the magnetic powder and the metal tin is effectively promoted; when the composite magnet is prepared, the proportion of the adhesive in the magnetic is effectively reduced while the same mechanical strength in the prior art is achieved; and therefore, the magnetic performance of the composite magnet is improved.
Owner:ZHEJIANG UNIV OF TECH
Lubricating oil composition for manual transmission of cargo truck with synchronizing ring
InactiveCN104152224AHigh content of saturated hydrocarbonsHigh viscosity indexLubricant compositionEngineeringPolyisobutylene succinimide
The invention relates to a lubricating oil composition for a manual transmission of a cargo truck with a synchronizing ring, which comprises the following ingredients by weight proportion: 60-80 parts of hydrotreatment base oil, 10-20 parts of synthetic oil PAO and 15-20 parts of polymethacrylate mixture with number-average molecular weight of 19000-21000, 0.5-0.8 parts of sulfurized isobutylene, 0.2-0.3 parts of dialkyl dithio ester amine salt, 0.2-0.5 parts of phosphite ester, 0.1-0.3 parts of dithiocarbamate; 0.1-0.3 parts of high base number calcium sulfonate, 0.1-0.3 parts of polyisobutylene succinimide, and 0.05-0.2 parts of zinc dialkyl dithiophosphate. The lubricating oil composition has good high temperature stability, excellent gear and bearing protection performance, and specific friction performance for specific synchronizer material; brings long-term oil change period, fuel economy and waste oil processing amount reduction, and has benefit for environmental protection and continuous development.
Owner:安徽中天石化股份有限公司
Detergent composition and preparation method thereof
InactiveCN112481623AImprove decontamination abilityImprove stabilityCarboxymethyl cellulosePolymer science
The invention provides a detergent composition which comprises the following components in percent by weight: 1.0-5.0% of alkyl polyglycoside, 1.0-10.0% of C12-C14 secondary alkanol polyether, 20-40.0% of hydrated silicon dioxide, 0.2-1.0% of polyacrylic acid, 0.5-2.0% of carboxymethylcellulose and a proper amount of organic solvent and water. The detergent composition is matched with alkyl polyglycoside, secondary alkanol polyether, hydrated silicon dioxide, polyacrylic acid and carboxymethylcellulose, so that the dirt-removing power, the stability and the corrosion resistance of the detergent composition are improved favorably.
Owner:完美(广东)日用品有限公司 +1
Protection device for ocean platform vertical pipe
ActiveCN112460342AReduce shockAvoid chemical corrosionNon-rotating vibration suppressionPipe elementsEnvironmental geologyStructural engineering
The invention relates to a protection device for an ocean platform vertical pipe. The protection device for the ocean platform vertical pipe comprises a float bowl with a through hole, wherein the vertical pipe is located in the through hole of the float bowl; and the protection device further comprises an inner layer protection assembly, an outer layer protection assembly and a protection layer,wherein the inner layer protection assembly comprises a buffer ring surrounding the periphery of the vertical pipe and fenders arranged between the vertical pipe and the buffer ring; the outer-layer protection assembly comprises a protection cylinder and a buffer structure arranged between the buffer ring and the protection cylinder; and the protective layer wraps the outer wall of the vertical pipe. The protection device has the beneficial effects that the anti-collision capacity of the vertical pipe is improved, damage to the vertical pipe is avoided, and the service life of the vertical pipe is prolonged.
Owner:ZHEJIANG OCEAN UNIV
Gas pipe network high-pressure magnetic repair device
InactiveCN110319297AAvoid harmTo achieve the purpose of pluggingPipe elementsMagnetic tension forceSuction force
The invention discloses a gas pipe network high-pressure magnetic repair device. The device comprises a magnetic portion, a lever portion and a diffusion drainage portion, wherein the magnetic portionis a driving force source of the whole repair device, the diffusion drainage portion can diffuse leaked natural gas to a safety area so as to avoid damage to repair persons due to large concentrationof natural gas, meanwhile, the pipeline plugging operation can be carried out, the action of the lever portion is to connect the magnetic portion and the diffusion drainage portion, so that the diffusion drainage portion is provided with strong magnet attraction force. The device has the beneficial effects that during gas leakage repair of a paramagnetic pipeline, the super-strong suction force of a magnet is used for resisting the impact force generated by the high-pressure air flow, so that leakage of a high-pressure pipe network is realized.
Owner:TIANJIN CHENGJIAN UNIV
Production method of InP-based heterojunction bipolar transistor
ActiveCN106952951AReduce usageAvoid chemical corrosionSemiconductor/solid-state device manufacturingSemiconductor devicesPolymethyl methacrylateUltraviolet lights
The invention provides a production method of an InP-based heterojunction bipolar transistor. The method comprises the steps of: carrying out photoetching on an emitter epitaxial layer on the surface of the InP-based heterojunction bipolar transistor by using a deep ultraviolet light source so as to form an emitter electrode; corroding the emitter epitaxial layer with the emitter electrode, and exposing a base epitaxial layer of the InP-based heterojunction bipolar transistor; carrying out photoetching on the exposed base epitaxial layer by using the deep ultraviolet light source so as to form a base electrode; corroding the base epitaxial layer with the base electrode, and exposing a collector epitaxial layer of the InP-based heterojunction bipolar transistor; and carrying out photoetching on the exposed collector epitaxial layer by using the deep ultraviolet light source so as to form a collector electrode. According to the production method provided by the invention, PMMA (polymethyl methacrylate) photoresist is used for being matched with deep ultraviolet light to carry out photoetching, and use of an alkaline reagent is avoided, so that chemical corrosion of an alkali substance to GaAsSb is effectively avoided, electric properties of a conducting channel and two-dimensional electron gas are ensured to the greatest extent, and device performance of the InP-based GaAsSb HBT (Heterojunction Bipolar Transistor) is promoted.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
A kind of zinc-nickel, nickel-tungsten electroplating solution and its preparation method and electroplating method
The invention relates to the field of electroplating, and provides zinc nickel and nickel tungsten electroplating liquid and a preparing method and an electroplating method of the electroplating liquid. Raw materials of each liter of electroplating liquid comprise 10 to 35g of nickel sulfate, 45 to 70g of sodium hydroxide, 3 to 12g of sodium tungstate, 5 to 12g of zinc powder, 0.1 to 1.5g of an addition agent A, 0.1 to 0.8g of an addition agent B, 15 to 50 g of a complexing agent and the balance deionized water. The electroplating method comprises the steps that a pure iron plate serves as ananode, a part to be electroplated serves as a cathode, the anode and the cathode are inserted in the zinc nickel and nickel tungsten electroplating liquid, under the first current density, electroplating is carried out, then, the first current density is converted into second current density with the current density higher than the first current density, electroplating is carried out, and a zinc nickel and nickel tungsten dual-layer plating can be obtained. The dual-layer plating can be obtained at one time, and the dual-layer plating can be used for preventing chemical corrosion, electrochemical corrosion and physical wear at the same time.
Owner:SHENGLI OILFIELD SHENGJI PETROLEUM EQUIP
Moisture-proof, corrosion-resistant and flame-retardant power communication cable
ActiveCN104319004BImprove work efficiencyStable jobPower cables with screens/conductive layersInsulated cablesElectrical conductorEngineering
Owner:南通上汇新材料有限公司
Inp-based heterojunction bipolar transistor fabrication method
ActiveCN106952951BAvoid chemical corrosionGuaranteed electrical performanceSemiconductor/solid-state device manufacturingSemiconductor devicesUltraviolet lightsOptoelectronics
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Cadmium Telluride Solar Cells with Tellurium Molybdenum Multilayer Composite Thin Films
InactiveCN104064617BImprove performanceAchieve ohmic contactPhotovoltaic energy generationSemiconductor devicesMolybdenum tellurideComposite film
The invention discloses a cadmium telluride solar battery provided with a tellurium-molybdenum multilayer composite thin film and belongs to the field of new energy materials and devices. According to the solar battery, the tellurium-molybdenum multilayer composite thin film is adopted as a copper-free transition layer of the cadmium telluride solar battery. On one hand, due to the fact that the transition layer has the precipitated phase of tellurium, there is no need to obtain a tellurium-enriched layer through a wet process after cadmium telluride is annealed; even if a dry process is adopted, independent deposition of a tellurium layer is not needed. On the other hand, the transition layer has the principal phase of molybdenum telluride and serves as a p-type semiconductor, and the discontinuity between the transition layer and a cadmium telluride valence band is little, so the transition layer can play a good transition role, and ohmic contact between the cadmium telluride and a metal electrode is achieved. By the adoption of the structure, the solar battery avoids chemical corrosion and achieves low-resistance contact, the performance of the solar battery can be effectively improved, and the long-term stability of a device is improved.
Owner:SICHUAN UNIV
Laying method of copper bar streamline for preventing electromagnetic interference of secondary cable of transformer substation
PendingCN113300226AAvoid chemical corrosionReduce workloadBus-bar/wiring layoutsEarthing arrangementsGrounding gridTransformer
The invention relates to a laying method of a copper bar streamline for preventing electromagnetic interference of a secondary cable of a transformer substation, and the laying method comprises the following steps: (1) laying a copper bar streamline in a cable trench; (2) L-shaped corner copper bars used for connecting the copper bar streamline and the grounding grid flat steel being arranged between the copper bar streamline and the grounding grid flat steel at intervals; and (3) the secondary cable being electrically connected with the copper bar streamline. According to the laying method, the operation safety of the secondary cable and the relay protection equipment can be effectively guaranteed.
Owner:STATE GRID CORP OF CHINA +2
BiVO4/MnOOH film electrode, preparation method thereof and application of BiVO4/MnOOH film electrode in corrosion prevention of photo-generated cathode
ActiveCN113293382AImprove stabilityExpand the scope of absorptionElectrolytic inorganic material coatingLiquid/solution decomposition chemical coatingMetallic materialsMaterials science
The invention provides a preparation method of a BiVO4 / MnOOH film electrode, and belongs to the technical field of corrosion prevention materials. The BiVO4 / MnOOH film electrode obtained by the invention can absorb visible light, and effectively widens the absorption range of a light and solar energy spectrum; and loading of MnOOH accelerates the hole transfer speed on the surface of a BiVO4 electrode under the open-circuit potential, the recombination rate of current carriers is reduced, the injection efficiency of photo-generated electrons into a cathode metal material can be greatly increased when the BiVO4 / MnOOH film electrode is used for corrosion prevention of the photo-generated cathode, the negative shift of the self-corrosion potential of the cathode metal material can be effectively promoted, and therefore, the corrosion resistance of the cathode metal material in the chlorine-containing environment is enhanced. Meanwhile, direct contact between the BiVO4 photoelectrode and a solution is avoided through loading of the MnOOH, chemical corrosion of BiVO4 is avoided, and then the stability of the BiVO4 / MnOOH film electrode is improved.
Owner:TAIZHOU UNIV +1
Integrated heat pipe heat dissipation device
InactiveCN108120330AReduce the difficulty of processing and manufacturingReduce processing costsEvaporators/condensersCorrosion preventionEngineeringHeat pipe
The invention provides an integrated heat pipe heat dissipation device. The integrated heat pipe heat dissipation device comprises an evaporator (1), a heat conduction pipe (2), cooling fins (3), fixing end plates (4) and an outer cover (5). The integrated heat pipe heat dissipation device is characterized in that the heat conduction pipe (2) is formed by bending a whole continuous pipe in a loopmanner, and a certain included angle exists between the axis of the heat conduction pipe and the horizontal direction. The integrated heat pipe heat dissipation device is good in anti-corrosion performance, high in heat dissipation efficiency, large in safety margin and long in service life and has the beneficial effects of being small in weight, low in cost, capable of saving water, materials andenergy, environmentally friendly and the like.
Owner:陈庆山
Preparation method and product of a corrosion-resistant coating on the surface of a rare earth permanent magnet material
ActiveCN112522749BAvoid chemical corrosionFacilitate co-deposition dopingElectrolytic coatingsPermanent magnet manufacturePhysical chemistrySodium Glutamate
The invention discloses a method for preparing a corrosion-resistant coating on the surface of a rare earth permanent magnet material. The method comprises the steps of first putting the sample into an alkaline sodium glutamate-copper ion plating solution to obtain a pre-plating sample with a certain thickness, and then placing the pre-plating sample The plated sample is put into the electroplating solution of acidic sodium glutamate-copper ion, and the corrosion-resistant coating is obtained by electroplating under the action of magnetic stirring. The method can avoid the chemical corrosion of the substrate caused by the contact of the substrate with the acid solution through the alkaline copper plating solution of sodium glutamate earlier, and then carry out composite co-deposition in the acidic sodium glutamate-copper ion plating solution under magnetic stirring, containing The particles of glutamate group enter the coating to make the coating have the characteristics of self-corrosion and repairing.
Owner:ZHEJIANG UNIV OF TECH +1
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