54results about How to "Avoid electrochemical reactions" patented technology

The invention relates to a preparation method of an NdFeB magnet with high coercivity. The method includes the following steps that heavy rare earth powder is mixed with an anti-oxidizing agent, a binder and an organic solvent to prepare uniform slurry, wherein the heavy rare earth powder refers to one or a mixture of Dy, hydrogenated dysprosium, Tb and terbium hydride, the mass ratio of the heavyrare earth powder in the slurry is 40-80%, the mass ratio of the anti-oxidizing agent is 5-20%, the mass ratio of the binder is 2-10% and the balance organic solvent, and the anti-oxidizing agent refers to the anti-oxidizing agent containing fluorine; after the slurry covers the surface of a sintered magnet, the thickness of the slurry is controlled to 20-100 micrometers, and drying is then conducted; the dried magnet is then sintered, and aging treatment is conducted. The method can reduce the use amount of heavy rare earth powder such as Dy and Tb, meanwhile, the requirement of the grain boundary diffusion technology for the size of a product is met, the problem that fluoride and oxide coating powder is easy to fall off is solved, and the manufacturing process is simple.

The invention discloses a drive circuit used for the display of a smectic LCD screen. The actuation circuit is used for controlling the display of the smectic LCD screen. The drive circuit comprises a control module, M R-wave generation modules and N D-wave generation modules. The control module is respectively connected with the R-wave generation modules and the D-wave generation modules which are connected with the smectic LCD screen. The drive circuit of the invention can generate a double-polarity high-voltage impulse which can be used for driving the array of liquid crystal to change, thud leading the display screen to display various images.

Disclosure herein is a hybridization detecting unit including, a reaction area for providing a field for hybridization between nucleic acid for detection and target nucleic acid, and opposed electrodes disposed so that an electric field can be applied to a medium stored or retained in the reaction area, wherein an electrode surface of at least one of the opposed electrodes has depression parts.

The invention discloses an inductive magnetic-electric biochemical reaction system. The inductive magnetic-electric biochemical reaction system comprises a reaction unit, a primary coil, a secondary coil, a rotating magnetic field unit and a control unit, wherein the reaction unit comprises a reaction cavity which comprises a reactant container, and the reaction cavity is arranged in a rotatable radial magnetic field; the primary coil is wound on one side of a closed iron core and is connected with the control unit; the secondary coil is wound on the other side of the closed iron core, the secondary coil comprises an insulated pipeline (such as a glass spring) which can be used for flowing of a reaction solution which is used as a conductor, and the two ends of the insulated pipeline are communicated with the reactant container; the rotating magnetic field unit is used for generating the rotatable radial magnetic field; and the control unit is at least used for adjusting excitation voltage and signal types applied to the primary coil. The application fields of the biochemical reaction system comprise auxiliary acid hydrolysis and enzyme hydrolysis of natural polymer raw materials, auxiliary extraction of modified or natural products, as well as induction and affection to biochemical reaction.

A wheel cover for a front wheel of a truck includes a main body, a central cap, at least two washers, multiple bolt caps, and an insulation plate. The main body defines a central hole and multiple recesses. The insulation plate, which defines a central hole and multiple through holes, is located between the main body and a rim of a front wheel, such that the recesses of the main body and the through holes of the insulation plate are aligned to receive bolts and nuts provided for the rim of the front wheel. The two washers are fitted into two of the recesses of the main body, around the corresponding bolts, and fixed by the corresponding nuts, so that the main body is assembled to the front wheel. The bolt caps can be respectively fitted into the recesses of the main body to cover the bolts and the nuts.

The invention relates to a method for synthesizing microballoon of electronic paper via titanium oxide or dye investing method, and relative application in the medium with low dielectric constant, while prior art generally dyes raw material, synthesizes inner core, synthesizes shell (the inner core has pyridinyl or epoxy at surface can eliminate shell), and ionizes outer shell of microballoon, to synthesize the microballoon of electronic paper. The inventive microballon prepared by titanium oxide or dye investing method can improve surface electric charge and activity, which further simplifies the process synthesizing different microcapsules and dying microballoon via different dyes. The invention provides a method for preparing organic colorful microballoon via microcapsule emulsion polymerization and preparing inorganic colorful microballoon via sol-gel method. The invention uses non-toxic solvent as electrophoresis medium to prepare electrophoresis solution, which can reduce VOC consumption and pollution.

The invention relates to a connection of two coaxially in-line elements in a fuel supply system of an internal combustion engine, in which the first element is preferably a receiving bush of a fuel distributor line (1) with a guide opening, and the second element, embodied as a pressure regulating valve (8) or pressure chamber, is insertable by a guide portion (19) into the guide opening (18) of the receiving bush (3), which facing one another in a wall (30) has two retention openings (31), aligned both with one another and with a retention groove (37) in the pressure regulating valve (8), which openings a U-shaped retention clamp (32) projects through with its legs (34) and in so doing fixes the position of the first element (3) and second element (8) relative to one another, which elements, at least in the region of the retention clamp (32) have portions of stainless steel. Alternatively, the first element may be an injection valve, which is inserted by one end into a plug connection (2), forming the second element, of the fuel distributor line (1), where it is fixed by means of a securing clamp, and the injection valve and the plug connection (2), at least in the region of the securing clamp, have portions of stainless steel. The invention provides that the retention clamp (32) is formed by a spring wire and the securing clamp is formed of a spring band of stainless steel, in order to prevent contact corrosion.

A formation method of a semiconductor structure comprises the steps of providing a substrate in which a bottom-layer metal layer is formed; forming a dielectric layer covering the surfaces of the substrate and the bottom-layer metal layer, wherein the material of the dielectric layer has a porous structure; forming a patterned mask layer on the surface of the dielectric layer; taking the patterned mask layer as a mask to etch the dielectric layer, forming an opening penetrating the dielectric layer, and exposing the top surface of the bottom-layer metal layer out of the bottom of the opening; adopting a carbon-containing gas to carry out the first etching postprocessing on the opening, and forming a sealing layer on the surface of the side wall of the opening; after the sealing layer is formed, adopting a wet etching process to etch and remove the patterned mask layer; forming a conductive layer filling the opening, wherein the top of the conductive layer is parallel and level with the top of the dielectric layer. According to the present invention, a technical window for forming the conductive layer is added, and the electrical property of the semiconductor structure is improved.

Provisions to charge the battery of a hearing apparatus without having to remove the battery from the housing are provided. A hearing apparatus separates charging contacts, which are disposed on the surface of the housing and serve to charge the battery, from the battery and to connect the battery to an amplifier circuit, when the battery is not being charged. Otherwise, when the battery is being charged, the hearing apparatus connects the charging contacts to the battery and separates the battery from the amplifier circuit. This double switching function means that the amplifier circuit is protected from charging power surges and also in the normal operating state of the hearing apparatus electrochemical reactions at the charging contacts are avoided.

The invention provides a three-dimensional (3D) NAND fabrication method for preventing silicon epitaxial growth (SEG) from being damaged and an obtained 3D NAND flash memory. The method comprises thesteps of generating a grid hard mask oxide on a surrounding region and forming an oxide film layer on a back surface of a substrate by a low-temperature oxidization method during the fabrication process of a surrounding region device, and controlling a cleaning process of the back surface of the substrate so that the hard mask oxide on the back surface of the substrate is reserved to a channel hole fabrication process. By the method, charge generation is prevented, electrochemical reaction during the phosphorous etching process is prevented so as to damage the SEG, the collapse of a 3D structure can be further prevented, the BSG failure rate is reduced, and higher produce yield is obtained.

The invention relates to a method for preventing the corrosion of a tungsten plug. The method comprises the following steps of: providing a semiconductor substrate with a tungsten plug, wherein the tungsten plug is connected with a metal lead which is formed on the tungsten plug and incompletely covers the tungsten plug; and illuminating the metal lead by adopting arc light or ultraviolet light until positive charges on the metal lead are eliminated. After the method for preventing the corrosion of a tungsten plug is adopted, the positive charges on the metal lead are removed by adopting the arc light or ultraviolet light illumination method so as to avoid the potential difference between the metal lead and the tungsten plug, avoid the generation of an electrochemical reaction and avoid corroding the tungsten plug in the following cleaning process.

An interconnector line of thin film comprising 0.001 to 30 at % of at least one kind of a first element capable of constituting an intermetallic compound of aluminum and / or having a higher standard electrode potential than aluminum, for example, at least one kind of the first element selected from Y, Sc, La, Ce, Nd, Sm, Gd, Tb, Dy, Er, Th, Sr, Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, Fe, Co, Ni, Pd, Ir, Pt, Cu, Ag, Au, Cd, Si, Pb and B; and one kind of a second element selected from C, O, N and H in a proportion of 0.01 at ppm to 50 at % of the first element, with the balance comprising substantially Al. In addition to having low resistance, such an Al interconnector line of thin film can prevent the occurrence of hillocks and the electrochemical reaction with an ITO electrode. The interconnector line of thin film can be obtained by sputtering in a dust-free manner by using a sputter target having a similar composition.

A carbon monoxide transforming apparatus for fuel cell is constructed such that a catalyst having at least platinum or palladium carried on a carrier which has a base point on the surface thereof is filled in a reaction vessel having gas inlet and outlet ports. As a result, a transformation and start-up operation can be instantaneously performed on the occasion of transforming a gas containing, as main components, hydrogen, carbon monoxide, carbon dioxide and water vapor so as to convert the carbon monoxide into carbon dioxide and at the same time to generate hydrogen. Additionally, the operating temperature for the transformation can be expanded.

A method for soldering or hybridizing two components to each other by means of a solder material, including producing, on the opposite-facing surfaces of the components to be soldered or hybridized, a surface capable of being wetted by said solder material, this surface being produced on a first component which is in electrical contact with a metallic conductor, depositing an appropriate quantity of solder material capable of constituting a solder or hybridization pad on one of the wettability surfaces, depositing a flux material in liquid form, bringing the wettability surface of the other component into contact with the solder material thus deposited and raising the temperature until at least the melting temperature of the solder material is reached in order to ensure effective soldering or hybridization of the two components to each other due to the reflow effect.

The invention belongs to corrosion protection techniques of aluminium alloy plates, particularly relates to corrosion preventive for being coated on the surfaces of the aluminium alloy plates, and further discloses a preparation method of the corrosion preventive. The corrosion preventive is prepared from the following components by part by weight: 10 to 35 parts of lacquer thinner, 5 to 20 parts of clear lacquer, and 0.5 to 5 parts of organosilicon. Through the adoption of the corrosion preventive electrochemical reaction on the surfaces of the aluminium alloy plates is prevented, dense protective films are formed on the surfaces of the aluminium alloy plates through the organosilicon, and the aluminium alloy plates are endowed with excellent anticorrosion performances. Compared with the corrosion preventive in the prior art, the corrosion preventive provided by the invention has stronger superior performances, and can be widely applied to surface corrosion protection of the aluminium alloy plates.

Disclosed herein is a system for detecting interaction between substances includes a reaction field for allowing the interaction to proceed between the substances, and a voltage application section for applying a voltage to a working electrode arranged facing the reaction field such that a predetermined electrodynamic effect is given to the reaction field. The voltage application section is provided with a section for superimposingly applying two sinusoidal voltages of different frequencies to generate a beat. Also disclosed herein is a method for detecting interaction between substances in a procedure of allowing the interaction to proceed between the substances by making use of a predetermined electrodynamic effect, the method includes the step of applying two sinusoidal voltages of different frequencies superimposingly to generate a beat such that an electrochemical reaction is suppressed in a reaction field where the interaction is allowed to proceed.

There are provided an interaction detecting portion including an interaction region in the whole of which an electrodynamic effect is obtained, and which has a simpler structure, and the like. There is provided an interaction detecting portion 1 including at least: a reaction region 2 which provides a field for an interaction between materials, and an electrode E1 (or a group of electrodes), having the same potential, which is provided so as to face the reaction region 2. In addition, there are provided a sensor chip, such as a DNA chip or a protein chip, including the interaction detecting portion 1, and an interaction detector using the detection portion 1.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a method for avoiding thermal runaway of a lithium ion battery. The method comprises the following steps: (1) surface activation of raw vermiculite powder: grinding raw vermiculite into powder, cleaning the raw vermiculite powder, dynamically soaking the cleaned raw vermiculite powder in an acidic solution or an alkaline solution, carrying out solid-liquid separation, and drying the material; (2) preparation of a dispersion liquid: fully mixing and dissolving a solvent, a surfactant, a dispersingagent and a binder, adding raw vermiculite powder, uniformly stirring, and then adjusting the viscosity of the slurry to 1000-20000 mPa.S; (3) coating and baking. By adopting the method, the safety performance of the lithium ion battery can be improved, and the thermal runaway phenomenon is avoided.

A bursting element and a galvanic cell with the bursting element. The invention relates to a bursting element (1) for protecting a galvanic cell from injurious excess pressure (3) comprising an essentially flatly designed basic body, wherein the base body has a multilayer structure. A first layer (4) of the base body is made of a first metal and a second layer (5) of the base body is made of a second metal. Upon heating of the bursting element (1), the bursting element (1) bulges due to the different metals, so that the bursting element is biased when heated. The present invention further relates to a galvanic cell (2) with a pressure release opening (8) and the bursting element (1) according to the invention arranged in the pressure release opening (8).

The invention relates to a micro-fluidic chip for sorting single cells, which comprises a substrate layer, the upper surface of the substrate layer is provided with a first metal electrode pair, a second metal electrode pair and an impedance identification area, the impedance identification area comprises a first impedance detection electrode pair and a second impedance detection electrode pair, the first impedance detection electrode pair is connected with the first metal electrode pair, and the second impedance detection electrode pair is connected with the second metal electrode pair; the second impedance detection electrode pair is connected with the second metal electrode pair; the micro-channel layer is positioned above the substrate layer, and the micro-channel layer comprises a micro-fluidic pipeline and a sorting electrode; the microfluidic pipeline comprises a main channel, one end of the main channel is communicated with a sample inlet through a plurality of filter columns, the other end of the main channel is communicated with a sorting port, the sorting port is respectively communicated with a waste liquid channel and a collecting channel, the waste liquid channel is communicated with a waste liquid outlet, and the collecting channel is communicated with a target outlet; the sorting electrode comprises an excitation electrode and a ground electrode surrounding the excitation electrode, and a part of the excitation electrode and a part of the ground electrode are both close to the sorting opening.

The invention relates to an alternating-current driven perovskite LED device with a dielectric layer. The alternating-current driven perovskite LED device comprises an anode layer, a first dielectriclayer, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode layer which are sequentially stacked on a substrate from bottom to top. An alternating-current power supply is added to the two ends of the cathode layer and the two ends of the anode layer to achieve an alternating-current driven perovskite LED. The charge accumulation phenomenon can be avoided, and the electrochemical reaction between the organic layer and the cathode and the anode can be avoided, so that the perovskite LED device is protected from being influenced by moisture and oxygen in the atmosphere.

The invention discloses a steel surface rust conversion emulsion. The steel surface rust conversion emulsion is prepared from 48-55wt% of deionized water, 8-15wt% of aqueous emulsion, 20-28wt% of industrial phosphoric acid, 0.5-1wt% of triethanolamine borate, 2-5wt% of alumina, 4-7wt% of sulfamic acid, 1-3wt% of oxalic acid, 1.5-2.5wt% of citric acid, 1-2wt% of zinc chloride, 0.5-1.5wt% of manganese chloride, 2.5-5wt% of hexamethylene tetramine and 0.5-1.5wt% of sodium carboxymethyl cellulose. The steel surface rust conversion emulsion has the characteristic that 1, rust removal and prevention functions are obtained and adaptability is good, 2, a bonding force is good, the steel surface rust conversion emulsion can be combined with various types of paint, coatings and paste ash and does not produce dissolution problems such as wrinkling and bubbling and an antirust capability is improved by 30-50%, 3, energy saving, environmental protection, no pollution and no blind angle in construction, and labor and time saving are realized, and 4, the steel surface rust conversion emulsion is suitable for conversion of rust on the surfaces of various labeled steel and cast iron and realizes conversion of harmful rust into a film beneficial for steel surface corrosion resistance.

The invention provides a hydrothermal management integrated device of a multi-stack fuel cell system and a working method of the hydrothermal management integrated device. The hydrothermal management integrated device comprises a heat exchange unit, an air intercooling unit and a parallel cooling liquid pipeline unit; the heat exchange unit comprises a thermostat, a heater communicated with one flow channel valve opening of the thermostat, a radiator communicated with the other flow channel valve opening of the thermostat, a deionizer communicated with the heater, a water tank, a water pump connected with the water tank and a heat exchange bypass valve connected with the water pump, wherein the deionizer and the radiator are both communicated with the water tank; the parallel cooling liquid pipeline unit comprises in-stack cooling liquid pipelines and out-stack cooling liquid pipelines, and all the in-stack cooling liquid pipelines are respectively communicated with inlets of all single fuel cell stacks; and all the stack-out cooling liquid pipelines are respectively communicated with outlets of all the single fuel cell stacks. According to the hydrothermal management integrated device and the working method thereof, the starting speed and the operation stability of the multi-stack fuel cell system can be improved.

The invention belongs to the technical field of engineering materials, and particularly relates to ultra-high performance concrete containing smelting slag and a preparation method of the ultra-high performance concrete. According to the technical key points, the concrete is prepared from the following components in parts by weight: 500 to 1000 parts of cement, 30 to 80 parts of silica fume, 150 to 300 parts of fly ash, 80 to 140 parts of slag powder, 100 to 200 parts of modified steel fiber, 100 to 200 parts of water and 800 to 1500 parts of coarse aggregate, wherein the coarse aggregate is smelting slag or a mixture of smelting slag and quartz sand. The smelting slag is used for partially or completely replacing the high-strength natural aggregate, the ultra-high performance concrete with the performance meeting the requirement can be prepared, the strength is improved, and the cost is reduced.

The invention discloses a lithium ion battery composite pole cover plate and assembling equipment thereof. The lithium ion battery composite pole cover plate comprises a lower insulation pad, the upper end of the lower insulation pad is fixedly connected with a top cover plate, a mounting groove is formed in the middle of the top cover plate, an anti-explosion valve is mounted in the mounting groove, and an anti-explosion valve patch is arranged at an inlet of the mounting groove; a positive pole is mounted at one end of the top cover plate, a negative pole is mounted at the other end of the top cover plate, and the upper ends of the positive pole and the negative pole are connected with the top cover plate through pole plastic; according to the composite pole cover plate disclosed by the invention, the space of the cover plate is greatly utilized, so that the internal space of a battery cell is increased, and the external height of the battery cell is reduced; defects of the copper-aluminum composite material are avoided, and safety risks of liquid leakage and short circuit of the battery cell cannot be caused even if the copper-aluminum composite material fails.

An interconnector line of thin film comprising 0.001 to 30 at % of at least one kind of a first element capable of constituting an intermetallic compound of aluminum and / or having a higher standard electrode potential than aluminum, for example, at least one kind of the first element selected from Y, Sc, La, Ce, Nd, Sm, Gd, Tb, Dy, Er, Th, Sr, Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, Fe, Co, Ni, Pd, Ir, Pt, Cu, Ag, Au, Cd, Si, Pb and B; and one kind of a second element selected from C, O, N and H in a proportion of 0.01 at ppm to 50 at % of the first element, with the balance comprising substantially Al. In addition to having low resistance, such an Al interconnector line of thin film can prevent the occurrence of hillocks and the electrochemical reaction with an ITO electrode. The interconnector line of thin film can be obtained by sputtering in a dust-free manner by using a sputter target having a similar composition.

The invention discloses a method for preventing corrosion inside a soft packaging battery and an electrode lug structure. The method comprises the following steps: a, coating a positive electrode lugof a soft packaging battery with a conductive adhesive layer, and enabling the conductive adhesive layer to contact an aluminum layer of a soft packaging battery aluminum-plastic film; b, coating a negative electrode lug of the soft packaging battery with an insulating adhesive layer, wherein the negative electrode lug is in insulating isolation from the aluminum-plastic film of the soft packagingbattery. The electrode lug structure comprises the positive electrode lug and the aluminum-plastic film, wherein the conductive adhesive layer is arranged onto the surface, close to the bottom, of the positive electrode lug; the length of the conductive adhesive layer is greater than the width of the positive electrode lug; the aluminum-plastic film comprises an aluminum layer and a nylon layer on the outer surface of the aluminum layer; the surface of the conductive adhesive layer is adhered to the aluminum layer of the aluminum-plastic film.

The invention discloses a round wire multi-branch locking connector and a connection method thereof. The round wire multi-branch locking connector comprises an electrically conductive connecting body,an input locking nut and output locking nuts; the connecting body are provided with an input screw portion and a plurality of output screw portions; an input locking tube and an output locking tube are arranged on ends of the input screw portion and each output screw portion respectively; an input locking cone section and output locking cone sections are arranged in inner holes formed in outer ends of the input locking nut and the output locking nuts; U-shaped openings are formed in the input locking tube and the output locking tubes; the input locking nut and the output locking nuts are connected to the input screw portion and the output screw portions respectively; and the input locking cone section and the output locking cone sections are pressed on the input locking tube and the output locking tubes respectively. The invention can quickly and vertically connect multi-branch round wires, can reduce the contact resistance, can prevent gaps, loosening and oxidation of a joint conductor contact surface after the hot and cold cycle of the connector, and can improve the connection reliability of the joint.