493results about How to "Uniform material" patented technology

A process and system for processing a thin film sample (e.g., a semiconductor thin film), as well as the thin film structure are provided. In particular, a beam generator can be controlled to emit at least one beam pulse. With this beam pulse, at least one portion of the film sample is irradiated with sufficient intensity to fully melt such section of the sample throughout its thickness, and the beam pulse having a predetermined shape. This portion of the film sample is allowed to resolidify, and the re-solidified at least one portion is composed of a first area and a second area. Upon the re-solidification thereof, the first area includes large grains, and the second area has a region formed through nucleation. The first area surrounds the second area and has a grain structure which is different from a grain structure of the second area. The second area is configured to facilitate thereon an active region of an electronic device.

The invention discloses a bonded copper wire product which uses high-purity copper wires as a matrix and is coated with a pure-palladium protective layer on the surface thereof. According to weight percentage, the bonded copper wire product contains 1.35 percent to 8.19 percent of palladium and the balance of copper; the production method of the palladium-plated bonded copper wire comprises the following steps: extraction of high-purity copper, preparation of a single-crystal copper bar, coarse drawing, heat treatment, palladium plating on the surface, fine drawing, heat treatment, surface cleaning and shunt winding. The invention abandons the traditional backward technique of application directly after drawing firstly and then electroplating, and adopts the technique that firstly, copper wires with diameter of less than 1mm are produced, then the pure-palladium layer is electroplated, and finally, the palladium-plated bonded copper wire finished product is produced by fine drawing. The bonded copper wire product can effectively improve the oxidation resistance of the bonded copper wires, ensure that the appearance of the finished product keeps silver metallic luster, and greatly prolong the quality guarantee period of the bonded copper wire product after being sealed off; in addition, the mechanical strength of the finished product is strengthened and the oxidation resistance thereof is improved, thus being beneficial to reducing the wire diameter of the bonded copper wire, shortening welding spacing and being more applicable to packaging of high-density and multi-pin integrated circuits.

The invention provides a gradient composite material steel rail turnout coating prepared by laser cladding. The composite material is characterized in that a transition layer adopts a Fe-based alloy material, wherein the Fe-based alloy material comprises the following components of, in percentage by weight, 13wt%-17wt% of Cr, 3wt%-6wt% of Ni, 1wt%-1.5wt% of Si, 0.5wt%-1wt% of Mn, 0.3wt%-1.2wt% ofNb, 1wt%-1.5wt% of B, 0.05wt%-0.7wt% of C, 0.5wt%-1.2wt% of V, and the balance Fe; a strengthening layer is arranged above the transition layer, and the strengthening layer adopts a Fe-based metal nano-phase composite material. The preparation method comprises the following steps of preparing the Fe-based metal powder and the Fe-based metal nano-phase composite material coating; preheating a steelrail by using laser scanning heating so as to reduce the temperature gradient; preparing the gradient composite material coating on the surface of the steel rail by utilizing a laser cladding technology, and performing laser scanning heat treatment; and reducing the cooling rate after laser cladding, so that the martensite of the heat affected zone is prevented from being generated, and the cracking property of the coating is reduced. The prepared steel rail frog has the advantages that the hardness curve is smooth, the overall toughness and bearing performance are good, the strength and hardness is higher than a common heavy-load railway frog, the service life is longer, and manufacturing integration is relatively strong.

A building thermal insulation dry powder mortar belongs to a building thermal insulation material. The weight ratio of a dry powder to water is 1: 1.5. The dry powder is prepared by mixing 450 parts by mass of ordinary portland cement, 70 parts by mass of a calcined gypsum powder, 37.5 parts by mass of a redispersible emulsion powder, 15 parts by mass of fine xylem fibers, 13 parts by mass of polypropylene staple fibers, 10 parts by mass of slaked lime, 10 parts by mass of sierozem, 10 parts by mass of heavy calcium carbonate, 3 parts by mass of hydroxypropyl methyl cellulose, 364 parts by mass of a calcined expanded perlite and 17.5 parts by mass of a premixed auxiliary agent. The thermal insulation building dry powder mortar has the advantages of strong thermal insulation, strong bond with walls, high compressive strength, strong drawing force, excellent weather resistance, and environmental protection, and also has the advantages of fire resistance, cracking resistance, leakage resistance, moisture resistance, sliding resistance, earthquake resistance and the like.

The invention relates to super-thick EH36 steel for an offshore wind power pipe pile. The super-thick EH36 steel for the offshore wind power pipe pile comprises the following chemical components in percentage by mass: .015 to 0.18 percent of C, 0.15 to 0.30 percent of Si, 1.40 to 1.60 percent of Mn, less than or equal to 0.0070 percent of P, less than or equal to 0.0030 percent of S, 0.050 to 0.070 percent of Nb, 0.015 to 0.030 percent of V, 0.08 to 0.020 percent of Ti, 0.030 to 0.050 percent of Al, 0.15 to 0.40 percent of Ni, 0.10 to 0.20 percent of Cr, and the balance of Fe. A production process flow comprises the following steps: performing converter operation, performing LF refining, performing vacuum degasifying, performing Ca treatment, performing continuous casting, dehydrogenizing, rolling, performing air cooling, performing high-temperature hot straightening, and normalizing. According to the production process flow, the super-thick EH36 steel of 90 to 120 mm for the offshore wind power pipe pile, which is high in unit weight, high in strength, high in impact toughness, small in thickness tolerance and high in straightness and does not have a surface defect is obtained.

A method of fabricating a flexible emitter using a high molecular compound, including forming an electro-luminescent carbon material on a glass substrate in a predetermined pattern in order to form an emitter pattern thereon, forming an electrode layer of a predetermined height on the emitter pattern and the glass substrate, applying a polymer gel material on the electrode layer, curing the polymer gel material, and separating the flexible emitter from the glass substrate.

An automatic milking plant is provided with a short milk hose, which, due to spaced-apart elevations in its center piece, has sufficient mechanical stability vis-a-vis pressure differences as well as a high flexibility. The use of the short milk hose according to the present invention leads to a reduction of the mechanical strain on the udder and thus also reduces irritations of the animal to be milked.

The invention relates to the field of wallboard manufacturing, in particular to a wallboard and a preparation method thereof. The wallboard is made of 90-110Kg of polyvinyl chloride, 60-70Kg of dry crop straw powder, 60-70Kg of lightweight calcium carbonate, 5-6Kg of composite stabilizer, 1.5-2Kg of lubricating agent, 5-16Kg of foaming modifier, 1.4-1.6Kg of AC (activated carbon) foaming agent, 0.5-1Kg of tribasic products and 0.9-1.1Kg of plasticizer. The preparation method of a wood-plastic board includes: preparing raw materials, well mixing the raw materials, cooling the mixed raw materials, adding the raw materials treated at the last step into extruding equipment for extrusion forming after mould-head thermal forming and stock-mould flowing water cooling forming, and cutting the board subjected to extrusion forming for placement. The wallboard has better dimension stability and is high in surface strength and uniform in material quality.

The high strength and high toughness structural steel without Cr and Ni consists of C 0.24-0.30 wt%, Si 1.10-1.40 wt%, Mn 1.30-1.70 wt%, Mo 0.40-0.60 wt%, V 0.20-0.35 wt%, Al 0.015-0.050 wt%, Cu not more than 0.30 wt%, S not more than 0.012 wt%, P not more than 0.020 wt%, and Fe and inevitable impurities for the rest. Its production process includes the following steps: 1. smelting and casting ingot; 2. rolling in the heating temperature 1100-1180 deg.c, finishing temperature of 850-900 deg.c and cooling rate of 40-80 deg/hr; and 3. annealing at the temperature of 720+/-10 deg.c for 8-10 hr, cooling to below 450 deg.c in the rate no higher than 30 deg/hr and discharging. The high strength and high toughness structural steel with cheap Si and Mn as main elements has yield strength not lower than 1170 MPa, tensile strength not lower than 1274 MPa, specific elongation not lower than 9 %, reduction of area not lower than 45 %, and impact toughness not lower than 62J.

The invention discloses a making method of a high-strength light-weight integral-hydrophobic xonotlite fireproof insulation board, comprising the following steps of: (1) mixing silicon raw materials and calcium raw materials according to a Ca/Si mole ratio of 0.9-1.1, then, injecting the mixed raw materials into a dynamic reaction kettle, synthesizing by using superheated steam of 250-400 DEG C at the steam pressure of 2.0-2.7MPa for 3-8hours to obtain xonotlite slurry, and adding reinforced fibers; (2) removing redundant water in the xonotlite slurry obtained in the step (1) and adding 0.1-8% of inorganic glue (according to the weight ratio of the slurry to the inorganic glue); (3) adding 0.1-8% of reaction type organic silicon waterproof agent in the xonotlite slurry obtained in the step (2) to enable the reaction type organic silicon waterproof agent and the slurry to form interface combination; and (4) carrying out compression molding on the xonotlite slurry prepared in the step (3), and drying to obtain the material-uniform high-strength light-weight complete-hydrophobic xonotlite board. The fireproof insulation board produced by the invention has the characteristics of high strength, uniform material, no bubble hole, light weight and complete hydrophobicity.

The invention relates to a preparation method of 80-100mm extra-thick EH36 steel for offshore wind power. The preparation method comprises the following steps of: converter processing-LF refining-RH vacuum degassing-Ca treatment-continuous casting-casting blank hydrogen diffusion-heating-normalizing rolling-air cooling-steel plate stacking and slow cooling- unstacking, wherein the normalizing rolling adopts two stages of rough rolling and finish rolling; the initial rolling temperature of the rough rolling is 1050-1100 DEG C, the single-pass reduction rate of three passes after the rough rolling is greater than or equal to 15%, and the cumulative reduction rate in the rough rolling stage is greater than or equal to 50%; and the initial rolling temperature of the finish rolling is 860-890 DEG C, the austenite non-recrystallization interval is expanded by adding sufficient Nb, the initial rolling temperature of the finish rolling is above the austenite ferrite equilibrium transformationpoint Ac3, the total rolling pass is 8-12, air cooling is carried out after rolling, Nb is separated out in the steel plate in the air cooling process, and the triangular grain boundary, the grain boundary and the grain interior of ferrite grains are pinned to limit the rapid growth of the ferrite. Therefore, the normalized and rolled EH36 steel plate for offshore wind power is obtained.

The invention relates to a thermal-conductivity nano-composite material and a preparation method thereof. The thermal-conductivity nano-composite material comprises the following components by weight percentage: 10-80% of polyolefin, 2-15% of nano-material, 5-50% of thermal conductivity additive, 3-10% of environmental stress resistant cracking additive, 4-19% of impact resistant modifier additive, 0.1-0.5% of antioxidant, a coupling agent of 0.4-3% of the total amount of the nano-material and the thermal conductivity additive, and a wetting agent of 1-6% of the total amount of the nano-material and the thermal conductivity additive. The preparation method comprises the following steps that: firstly, the nano-material, the polyolefin, the impact resistant modifier additive, the coupling agent, and the wetting agent are melted and co-blended according to a certain ratio to be made into masterbatches; secondly, the polyolefin, the masterbatches, the thermal conductivity additive, the environmental stress resistant cracking additive, the impact resistant modifier additive, the antioxidant, the coupling agent and the wetting agent are melted and co-blended according to a certain ratio to be extruded and dried; and thirdly, the materials are melted and co-blended to be extruded and dried to obtain a product. The materials provided by the invention have excellent thermal conductivity and good mechanical properties, and are widely used in heat exchange equipment in various industries.

The invention relates to a standardized design construction method of a flexible compound fabricated recoverable rectangular working well supporting structure. The method comprises the following stepsthat (1) construction of minisize supporting piles is carried out; (2) construction of pile top crown beams; (3) a rectangular working well is excavated, panels and waist beams are installed, and high polymers are poured to side walls for sealing; (4) excavation is carried out layer by layer sequentially in the vertical direction, and the step (3) is carried out repeatedly till the design depth is met, that is, construction of the rectangular working well supporting structure is completed accordingly; and (5) after the supporting structure fulfills the usage function, the supporting structurerecovery work can be carried out as the backfilling work is started. Through standardized design construction of the established supporting structure system, one supporting structure can meet the construction requirement of most rectangular working wells in a region, the advantages of safety, reliability, quick and convenient construction, advanced technologies, high recoverability, superior economic indicators and the like are achieved, and the application and development prospects are considerable.

The invention discloses an FRP pipe and thick-wall steel pipe compounding hollow recycled concrete pile which is mainly formed by an FRP pipe, a round reinforcement cage framework, a thick-wall steel pipe and recycled concrete. The round reinforcement cage framework and the thick-wall steel pipe are arranged in the FRP pipe, and the round reinforcement cage framework, the thick-wall steel pipe and the FRP pipe are arranged concentrically. The recycled concrete is poured in annular space between the FRP pipe and the thick-wall steel pipe. The bearing capacity and deformation resisting capacity of the single pile can be greatly improved through the built-in thick-wall steel pipe. The wrapping FRP pipe can effectively prevent a pile body from being corroded, and the durability of the pile body is improved. Meanwhile, the FRP pipe and spiral stirrups are combined to restrain the inner recycled concrete, and the bearing force of the compounding pile is further improved. Waste concrete is fully utilized as recycled aggregate, and application and popularization of the recycled concrete in building foundation engineering are facilitated. In a word, the compounding hollow recycled concrete pile has the advantages of being good in pile forming quality, high in bearing force, good in deformation resisting capacity and durability, small in influence on the environment, high in construction speed and the like.

The invention provides a high-boron stainless steel neutron-absorbing material and a preparation method thereof, and belongs to the field of neutron-absorbing materials. The high-boron stainless steel neutron-absorbing material comprises the following components in percentage by mass: 0.2-3% of B, 12-26% of Cr, 1.5-23% of Ni, 0.02-0.6% of C, 1-11% of Mn, 0-7% of Mo, no less than 3% of Si, no less than 0.2% of P, no less than 0.030% of S and the balance of iron. The preparation method comprises the following steps: atomization spraying for powder preparation; hot-isostatic-pressing sintering, and rolling. The prepared high-boron stainless steel has the advantages that the stainless steel density is high, the relative density is higher than 99.8%, the stainless steel structure is uniform; the room-temperature tensile strength is higher than 500 MPa, the yield strength is higher than 200 MPa and the ductility is higher than 5%. Meanwhile, the prepared high-boron stainless steel is applicable to a nuclear radiation protective shielding material, a spent fuel storage material, a reactor control material and the like, and has good economic benefit and social benefit.