551 results about "Metallic coating" patented technology

The invention discloses a composite three-dimensional current collector prepared based on chemical plating, a metal negative electrode and a metal secondary battery, and belongs to the technical field of metal secondary batteries. The composite three-dimensional current collector comprises a nonmetal three-dimensional skeleton matrix and a metal coating which is uniformly distributed on the surface of the matrix through chemical plating. When the metal battery works, Mg, Li, Na, Ca, Zn and other metals are induced to be subjected to uniform electro-deposition and stripping on the surface of the composite three-dimensional current collector by virtue of affinity among metals, and the three-dimensional porous structure of the matrix provides a buffer space for metal deposition, so that metal ions are subjected to rapid and uniform electro-deposition; the stability of an electrode interface can be enhanced, dendritic crystal growth is reduced, the electrodeposition overpotential of metal is reduced, and the service life of a metal negative electrode is prolonged. The composite three-dimensional current collector prepared on the basis of chemical plating solves the problem of non-uniform growth of a metal negative electrode, and is an effective way for commercialized production of a metal secondary battery.

The invention relates to the technical field of inorganic non-metal coating materials, in particular to high-stain-resistance enamel matte glaze and a preparation method thereof.The high-stain-resistance enamel matte glaze is prepared from selected quartz sand, feldspar and other basic raw materials by adding a composite additive Y and a rare earth activator Z. The preparation method comprises the steps that the basic raw materials are mixed and subjected to ball milling, then the additives are added for continuous ball milling, high-temperature melting, water quenching and secondary ball milling are conducted, and the high-stain-resistance enamel matte glaze is obtained. The granularity is controlled, and the stain resistance is improved. The enamel matte glaze has the advantages of obvious advantages, high stain resistance, difficulty in stain attachment, easiness in cleaning, capability of prolonging the service life of a product and reducing the maintenance cost, photocatalytic self-cleaning and environment-friendly characteristics, good matte effect and capability of improving the competitiveness of the product.

The subject invention is concerned with systems and methods advantageously applying finite element analysis to establish design rules for a highly sensitive piezo-resistive pressure sensor with an output that is high enough to be detectable by simple and inexpensive circuits and therefore ensure wearability. Four frequently reported micro-feature shapes in micro-patterned piezo-resistive sensors are provided, where the micro-dome and micro-pyramid yield the highest sensitivity. Investigations of different conductivity values of micro-patterned elastomers show that coating the elastomer with a conductive material (e.g., a metallic coating) leads to higher current response when compared to composited conductive elastomers. Advantageous geometric parameters and spatial configurations of micro-pyramid design of piezo-resistive sensors are provided. Results show that an enhanced sensitivity and higher current output can be achieved by a lower spatial density configuration of three micro-features per millimeter length, a smaller feature size of around 100 μm, and a 60-50 degrees pyramid angle.

The invention discloses a construction method and system of a metal coating CCD detection model based on GAN, and belongs to the technical field of metal coating detection of semiconductor electronic components. An image data processing result which is output by the constructed GAN and meets a threshold range is a good product; and the processing result of the output image data exceeding the threshold range is a missing product, so that the electronic electroplating high-end quality requirement of the semiconductor electronic element is strictly managed according to the standard. Besides, the appearance, shape, color and overall morphology characteristics of the semiconductor device after electronic electroplating are simulated and monitored by adopting a plating piece total quality threshold value judgment module, the accuracy of GAN training is improved by meeting the standard that the minimum threshold value is a plating specification value-5% and the maximum threshold value is a plating specification value + 5%, training distribution of a generator and a discriminator is rapidly achieved, and the accuracy of the GAN training is improved by adopting the standard that the minimum threshold value is the plating specification value-5% and the maximum threshold value is the plating specification value + 5%. Therefore, the optimal selection standard of the CCD detection mechanism model is obtained, and the detection effect of accurately and rapidly identifying good products or missing products is achieved.

An inlet assembly of a nacelle includes an inlet cowl that has a leading edge, an outer side that extends from the leading edge to an outer aft edge, and an inner side that extends from the leading edge to an inner aft edge. An exterior surface of the inlet cowl is seamless along an entire length of the outer side from the leading edge to the outer aft edge. The inlet cowl includes a lipskin that has a metallic coating. The metallic coating defines the exterior surface of the inlet cowl along the leading edge and the entire length of the outer side.

The invention discloses a photoelectric composite aluminum alloy conductor aerospace cable and a preparation method, and belongs to the technical field of photoelectric composite cables, the cable comprises an optical fiber unit, a conductor unit, an insulating layer, an anti-electromagnetic unit and a sheath layer; the anti-electromagnetic unit is obtained by weaving double-layer metallized polyimide fibers; the double-layer metallized polyimide fiber sequentially comprises a polyimide fiber, a first metal coating and a second metal coating from inside to outside. The surface of the polyimide fiber is coated with modified polydopamine; the first metal coating is copper; and the second metal coating is silver and / or nickel. The double-layer metal coating can form a more compact metal outer layer on the surface of the polyimide fiber, the requirements of the severe external environment of aerospace are met, a conductive network with higher stability is formed, and the electromagnetic shielding effect is remarkably improved. Moreover, the polyimide fiber is coated with a polydopamine coating, so that the fiber is not damaged, and the overall high and low temperature resistance and radiation resistance can be improved.

The invention discloses an aluminum-based composite material, a preparation method thereof and an electronic device, and belongs to the field of electrical materials. The preparation method comprises the following steps: purifying the aluminum-based base material to obtain the purified aluminum-based base material. A metal protection layer is formed on the surface of the purified aluminum-based base material, and a first composite material intermediate is obtained; performing first electroplating treatment on the first composite material intermediate to corrode the metal protective layer so as to form a first metal coating on the surface of the aluminum-based substrate, thereby obtaining a second composite material intermediate; and the second composite material intermediate is subjected to second electroplating treatment, so that a second metal coating is formed on the surface of the first metal coating, and the aluminum-based composite material is obtained. According to the preparation method, the compactness and smoothness of the plating layer can be improved, other inert precious metals do not need to be introduced in the preparation process, and the preparation method has the advantages of being short in operation process, convenient, efficient, high in reliability, low in cost and the like.

The invention relates to the technical field of electricity testing devices, in particular to a non-contact electricity testing device for alternating current and direct current overhead line mixing and an electricity testing method.The non-contact electricity testing device comprises a moving plate and an electrode plate, the moving plate is rotationally arranged, and the moving plate and the electrode plate are arranged in the extending direction of the rotating axis of the moving plate; metal coatings are arranged on the surfaces, close to and away from the movable plate, of the electrode plates. Through the design that the moving plate and the electrode plate are arranged in the direction of the rotating axis, the double-sided metal coating structure of the electrode plate is combined, the alternating-current and direct-current electric field is detected through one device, integration of the electricity testing device is achieved, and the operation efficiency is improved.

The invention discloses an electroplating process method for preparing a deep-etching thick metal mask, and belongs to the technical field of micro electro mechanical system electroplating processes. Comprising the following steps: firstly, carrying out photoetching and patterning on the surface of a wafer by using positive photoresist; then, carrying out seed layer sputtering on the wafer subjected to pattern photoetching, and forming a to-be-electroplated region with a preset pattern through a stripping process; then, photoetching is carried out on the to-be-electroplated area through negative photoresist, and a thick photoresist layer with the thickness larger than that of a preset metal coating is formed; and finally, the electroplating area is electroplated, and the metal coating with the preset thickness is obtained. According to the method, the negative photoresist process is adopted, so that the transverse growth of the metal coating is effectively inhibited, the perpendicularity of the side wall of the metal coating is improved, and meanwhile, the damage to the surface of the wafer when the seed layer in the non-electroplating area is removed is avoided. The problems that mushroom-shaped protrusions are easily formed on the edge of a plating layer, crystal grains are coarsened and the like in the electroplating process of an existing electroplating method are solved.

The invention relates to a silicon-carbon composite material, a preparation method and application thereof, and a battery. The silicon-carbon composite material comprises: a porous carbon matrix; the metal coating is positioned on the hole wall of the porous carbon substrate; the silicon alloy particles are positioned on the surface of the metal coating; the amorphous silicon particles grow along the epitaxy of the silicon alloy particles; and a carbon coating layer, wherein the carbon coating layer is located at the outer layer. The silicon-carbon composite material disclosed by the invention has excellent conductivity and structural stability, and the battery adopting the silicon-carbon composite material can realize high mass specific capacity and excellent high-temperature and low-temperature cycling stability.

The invention relates to the technical field of optical fiber sensors, and provides an optical fiber cranium temperature and cranium pressure composite monitoring probe and a preparation method thereof.The optical fiber cranium temperature and cranium pressure composite monitoring probe comprises a pressure diaphragm, a hollow glass tube, a metal coating, a graded-index optical fiber and a single-mode optical fiber, one end of the hollow glass tube is connected with the pressure diaphragm; the metal coating is arranged on one surface, far away from the hollow glass tube, of the pressure diaphragm; the graded-index optical fiber is arranged in the hollow glass tube, and the graded-index optical fiber and the pressure diaphragm are spaced to form an F-P cavity; and one end of the single-mode optical fiber is inserted into the hollow glass tube. The corrugated pressure diaphragm formed by processing the coreless optical fiber is used as a sensitive element, the pressure measurement sensitivity can be greatly improved under the condition of the same diaphragm thickness and diameter, the zero drift of the sensor caused by temperature and moisture is reduced, and meanwhile, the pressure sensitivity can be accurately regulated and controlled so as to adapt to different application scenes such as intracranial pressure, intramental pressure and blood flow pressure.

A steel sheet, coated with a metallic coating including, by weight percent, from 7.5 to 9.0% of zinc, from 1.1 to 4.0% of silicon, from 1.1 to 8.0% of magnesium, up to 3.0% of iron, optional elements chosen from Pb, Ni, Zr, or Hf, the content by weight of each element being less than 0.3%, optionally up to 100 ppm of Calcium and unavoidable impurities up to 0.02%, a balance being aluminum, and wherein the coating weight of the metallic coating is from 50 to 500 g / m2 for the sum of both sides of the-steel sheet.

The utility model relates to the field of offshore oil and gas drilling, and discloses a mud line suspension system suitable for a high-temperature and high-pressure environment, an outer-layer casing hanger body is fixed on a riser through a first seating shoulder, a middle-layer casing hanger body is fixed on the outer-layer casing hanger body through a second seating shoulder, and the middle-layer casing hanger body is fixed on the riser through a second seating shoulder. The inner-layer casing hanger body is fixed on the middle-layer casing hanger body through a ratchet-shaped buckle; the upper portion of the outer-layer casing hanger body, the upper portion of the middle-layer casing hanger body and a lowering tool are sealed through a metal coating and a metal sealing ring, and the upper portion of the inner-layer casing hanger body and a lowering tool are sealed through an arc-shaped conical surface double-V metal sealing structure. Through reasonable structural layout, sealing arrangement, material selection and thread screwing length, the mud line suspension system can be well suitable for a high-temperature and high-pressure harsh environment, and the overall strength and the connection reliability are effectively improved.

The invention discloses a spectral selective greenhouse cooling water-saving film and a preparation method thereof. The film sequentially comprises a polymer thermal radiation material layer, a metal coating and a polymer multilayer optical film from top to bottom. Wherein the polymer thermal radiation material layer on the top layer can dissipate heat in a thermal radiation form; the metal coating on the middle layer is used for reflecting near-infrared light with the wavelength larger than 800 nm; the polymer multilayer optical film on the bottom layer is used for reflecting green light of 500-600 nm. The spectrum separation technology and the radiation refrigeration technology are coupled, the polymer multilayer film and the metal coating are combined, the polymer multilayer film is used for replacing a dielectric layer in traditional coating, the technological process is effectively simplified, the cost is greatly reduced, and the machining speed is increased; in addition, the polymer multilayer film can serve as a protective layer of a metal coating, the oxidation speed of the metal coating is slowed down, and the overall durability of the film material is improved.

The utility model discloses a conductive wire which comprises at least one strand of conductive wire core, and the conductive wire core comprises a metal conductor and a first filling body which are twisted together. The first filling body is conductive and weldable and comprises aramid fibers, and a metal coating is arranged on the outer surface of each aramid fiber. According to the utility model, the first filling body can be used for filling, conducting and welding, so that the first filling body can reduce the usage amount of the metal conductor on the basis of enhancing the mechanical property of the conductor wire, thereby being beneficial to reducing the cost; and the quality problems of pseudo soldering and false soldering which are easily caused by the adoption of insulating filler in the prior art can be solved.

The utility model discloses a dissimilar metal laser welding device with an external magnetic field and a preset gradient coating, which comprises a left lifting system, a right lifting rotating system, a laser welding system, a welding fixture, an electromagnetic field powder mixing electroplating system, an electroplating power supply, a magnetic field power supply, a blowing nozzle, a left upright post, a right upright post and a workbench, according to the electromagnetic field powder mixing electroplating system, a gradient magnetic field is additionally arranged in an electroplating machining area, a middle metal coating distributed in a gradient mode is deposited on the surface of a lower plate test piece, a left lifting system and a right lifting rotating system are matched, and a dissimilar metal upper plate test piece and the lower plate test piece are attached; and the laser welding system is used for carrying out laser lap welding on dissimilar metal materials by utilizing a high-power laser beam. The mechanical property of the dissimilar metal welding seam can be effectively improved, the device is simple in structure and convenient to operate, and the machining quality and the machining efficiency can be improved.

A method for manufacturing foundry tooling comprises the steps of forming a foundry tooling body in accordance with a predetermined model, and electroplating the foundry tooling body to add a metallic coating to at least a portion of the foundry tooling body to define at least one plated tooling body surface, wherein each plated tooling body surface is configured to contact a malleable blank to produce a sand mold suitable for manufacturing a casting.

The invention discloses a multi-layer polymeric membrane functional current collector and a preparation method thereof, a pole piece and a battery, and the preparation process comprises the following steps: S1, blending and granulating ultra-high molecular weight polyethylene and high density polyethylene to prepare a composite layer raw material; s2, adding the composite layer raw material and the middle layer nylon raw material into a screw extruder, and carrying out co-extrusion casting to form a composite layer-middle layer-composite layer three-layer structure film; s3, carrying out plasma activation treatment on the obtained three-layer structure film; s4, forming nanoscale pits in the outer surface of the three-layer structure film by dipping the three-layer structure film in the treating fluid; and S5, preparing a metal layer on the outer side of the three-layer structure film to obtain the multi-layer polymer film functional current collector. Through material blending optimization, multi-layer structure design and surface functionalization treatment, the mechanical property and dimensional stability of the current collector base film and the binding force between the current collector base film and a metal coating are remarkably improved.

The invention discloses an optical measurement device for an engine flow field, and relates to the technical field of optical measurement. The transmitting end module and the receiving end module are arranged on two walls of an engine to be tested and are provided with opposite lens type end caps; the transmitting end module comprises a built-in metal coating high-temperature single-mode optical fiber; one end of the single-mode optical fiber is connected with a lens type end cap of the transmitting end module to form an integrated laser transmitting probe; the receiving end module comprises a built-in metal coating high-temperature multimode optical fiber and a detector; one end of the multimode optical fiber is connected with a lens type end cap of the receiving end module to form an integrated laser coupling probe; and a receiving and transmitting light path pair penetrating through an engine combustion area is formed between the lens type end caps of the transmitting end module and the receiving end module. Water vapor between a window sheet and an optical probe collimating lens and between the collimating lens and an optical fiber core in a traditional measurement module is eliminated, and the measurement precision of an engine flow field combustion area is improved.

The invention provides a miniature corrugated pipe machining technology and application, a miniature corrugated pipe is formed based on metal material machining, the miniature corrugated pipe is provided with a main body part, a plurality of extension parts are formed at one end of the main body part, and the extension parts are symmetrically arranged according to the axis of the main body part. According to the method, a metal material is machined into a designed shape through machining, then a thin metal coating is formed on the periphery of the metal material through an electrochemical process, useful parts are cut off through machining, and finally, original metal in the middle of the useful parts is thoroughly corroded through the electrochemical process, so that a final finished product is obtained. The miniature corrugated pipe is easy to install, use, replace and discover abnormities, and the installation space is small.

The invention discloses preparation and application of an ultra-stable flexible strain sensor based on a W-shaped vein structure. The preparation method of the sensor comprises the following steps: (1) preparing a W-shaped vein flexible PDMS film by a template method; (2) uniformly covering a Cr / Ag / Cr three-layer metal material on the surface of the flexible PDMS thin film of the W-shaped vein in a magnetron sputtering manner; and (3) stretching and releasing along the W-shaped veins to obtain the flexible strain sensor with the metal coating cracks. The sensor provided by the invention has good stretchability, super stability and excellent durability, and has wide application prospects in multiple aspects of physiological monitoring of pulse beating, swallowing, facial expression, eyebrow wrinkling and the like of a human body.

The invention belongs to the field of aqueous zinc ion batteries, and provides a zinc composite negative electrode and a preparation method and application thereof. The zinc composite negative electrode is provided with a current collector layer and two zinc foil layers, the current collector layer is arranged between the two zinc foil layers, the surface of the current collector layer is provided with a metal coating, metal is one or more than two of Bi, Ni, Sn, Te, MXene and a carbon material, and the current collector layer and the zinc foil layers are combined in a physical rolling mode. The composite negative electrode is used for the zinc ion battery, so that the service life of the zinc ion battery is prolonged, and the coulombic efficiency of the zinc ion battery under the high zinc utilization rate can be improved. Button-type and soft-package zinc ion batteries assembled by using the electrolyte have excellent cycle life. The preparation process is simple and is suitable for large-scale production.

A method for forming a metallic coating from a metallization solution, wherein the metallization solution comprises at least one metal ionic precursor, at least one structuring liquid, and at least one driving liquid, wherein the at least one metal ionic precursor comprises at least one metal cation and at least one counterion, the at least one structuring liquid serves to dissolve the at least one metal ionic precursor in the metallization solution, the at least one driving liquid serves to nebulize the metallization solution; and wherein the method comprises: applying the metallization solution to a substrate, and exposing the metallization solution to a plasma under atmospheric conditions, thereby obtaining the metallic coating.

A battery pack with electromagnetic compatibility (EMC) for an electric vehicle is presented that includes a battery pack housing, at least one battery module enclosed within the battery pack housing, and an electronics assembly enclosed within the battery pack housing, in which the electronics assembly comprises a DC-DC converter and an electronics assembly casing, wherein at least one of the electronics assembly and battery pack housing includes an electromagnetic interference (EMI) shield to enable EMC. The electronics assembly includes a battery management system (BMS) circuit board and a DC-DC converter control circuit board and a DC-DC converter power electronics board. The electronics assembly is of substantially a same dimension of a battery module, in which the EMI shield comprises at least one of a metallic screen, metallic wires, a metallic tape, a metallic sheet, a metallic coating, paramagnetic materials, carbon based materials and metallic and / or carbon particle-infused composites.

The invention relates to the technical field of three-dimensional circuit manufacturing processes, and discloses a three-dimensional circuit manufacturing process implementation method and device, and the method comprises the steps: preparing a base material, and manufacturing a carrier of a three-dimensional circuit; shielding a non-circuit area on the surface of the base material as required; the base material is placed in a vacuum cavity, before formal vacuum metal sputtering, plasma surface cleaning and roughening are conducted on the surface of the base material, and vacuum sputtering is conducted; performing laser forming on the surface of the metal coating substrate; when the thickness of the vacuum sputtering plating layer of the base material does not meet the design requirement of a finished product, the plating layer of the three-dimensional circuit base material after laser forming is thickened; and carrying out surface passivation treatment on the three-dimensional circuit base material which is subjected to laser forming and has the plating thickness meeting the requirement, so as to obtain a finished product of the three-dimensional circuit. According to the invention, the problem that the three-dimensional circuit process has too many restrictions on materials and many materials cannot be used for manufacturing three-dimensional circuits is solved, the accuracy and consistency of circuit patterns are ensured, and the production efficiency is remarkably improved.

The invention belongs to the field of high-thermal-conductivity composite materials, and particularly relates to a 3D printing copper-diamond composite high-thermal-conductivity material and a preparation method thereof.The 3D printing copper-diamond composite high-thermal-conductivity material comprises a copper matrix and diamond particles dispersed in the copper matrix, and the surfaces of the diamond particles are provided with metal coatings; the copper matrix is formed by copper powder with the particle size of 10-100 microns, and the volume fraction of the diamond particles in the composite material is 40%-50%; according to the method, the titanium plating layer is prepared on the surface of the diamond, the stable titanium carbide transition layer is formed through the reaction of titanium and carbon, the interface thermal resistance between the diamond and copper is remarkably reduced, the interface bonding strength is improved, and heat conduction is facilitated. The selected area green laser 3D printing technology is adopted, a green laser device shows remarkable advantages in the field of 3D printing of copper alloy, and the heat conductivity of the prepared composite material can reach and is remarkably higher than that of pure copper by optimizing the diamond volume fraction and 3D printing process parameters.

The invention belongs to the field of water electrolysis hydrogen production, and relates to a gradient pore structure electrode and a preparation method and application thereof.The preparation method comprises the following steps that 1, the surface of an electrode substrate is sequentially coated with polystyrene of different particle sizes, then low-temperature sintering is conducted, and the polystyrene is fixed to the surface of the electrode substrate; obtaining an electrode substrate fixed with a polystyrene molecular template; 2) electroplating a metal coating on the surface of the electrode substrate fixed with the polystyrene molecular template by adopting a chemical plating method to obtain the electrode substrate which contains the metal coating and is fixed with the polystyrene molecular template; and 3) carrying out template removal and metal substrate removal treatment on the electrode substrate which contains the metal coating and is fixed with the polystyrene molecular template obtained in the step 2) to obtain the gradient pore structure electrode. An efficient three-phase reaction interface is constructed through the gradient holes, the bubble shielding effect is reduced, the overpotential and the water electrolysis energy consumption are reduced, and the water electrolysis hydrogen production efficiency is improved.

The invention discloses a water electroplating processing technology for a base material, and belongs to the technical field of base material surface processing treatment, and the water electroplating processing technology comprises the following steps: step 1) oil and rust removal: a flexible metal base material is subjected to oil and rust removal treatment through oil removal liquid and rust removal liquid in sequence; (2) acid etching is conducted, specifically, the flexible metal base material is put into an acid etching solution to be subjected to acid etching; (3) spraying is conducted, specifically, the flexible metal base material is placed in an automatic spraying machine, the face to be plated is bent outwards to be subjected to spraying, and a first metal plating layer is formed; (4) water electroplating is conducted, specifically, water electroplating is conducted on the flexible metal base material subjected to spraying, the face to be plated is bent outwards to be subjected to water electroplating, and a second metal plating layer is formed outside the first metal plating layer; and (5) vacuum plating is conducted, specifically, vacuum plating is conducted on the flexible metal base material subjected to water electroplating, the face to be plated is bent outwards to be subjected to vacuum plating, and a third metal plating is formed outside the second metal plating. According to the application, the conductive resistance is reduced, and meanwhile, the binding force of the plating is improved.

The utility model relates to a decorative plate, in particular to an imitated metal texture metalized gauze multilayer plate which comprises a transparent layer, a metalized gauze layer, a bonding layer and a back plate layer which are sequentially arranged, and the metalized gauze layer comprises gauze and a metal coating arranged on the surface of the gauze. The metalized gauze multilayer board imitating the metal texture can achieve the effect of the metal texture, is not prone to color fading, and meanwhile can achieve multicolor overprinting, stereoscopic patterns and the like.

A coated steel sheet providing cathodic protection and suitable for manufacturing a press hardened part with good powdering resistance during press-hardening and good corrosion performance. A method for the manufacture of hardened parts starting from a steel sheet coated with a metallic coating. The part has good characteristics with respect to corrosion and powdering resistance. The present disclosure is particularly well suited for the manufacture of automotive vehicles.