210results about "Electrolytic coatings" patented technology

The invention discloses a terminal and a terminal manufacturing method. The terminal comprises a terminal body which is provided with a matching part used for being matched with a matching terminal. A first bottom plating layer and a first silver graphite plating layer formed on the first bottom plating layer are formed on the contact surface of the matching part of the terminal body. Graphite particles are uniformly dispersed in the first silver graphite plating layer, so that the wear resistance and the conductivity of the matching part of the terminal body are improved. According to the invention, the silver graphite plating layer has excellent wear resistance and conductivity, can greatly improve the matching times of the terminal and the matching terminal, and can reduce the plugging resistance between the terminal and the matching terminal.

The invention discloses an electroplated part, an electroplated part manufacturing method and a connector. The electroplated part comprises a base material; a nickel plating layer formed on the surface of the base material; the tin-graphite composite plating layer is formed on the nickel plating layer; the nickel plating layer is formed on the base material, the tin-graphite composite plating layer is formed on the nickel plating layer, the tin plating layer is formed on the tin-graphite composite plating layer, the nickel plating layer serves as a bottom plating layer of the base material, the tin plating layer serves as an outer plating layer of the base material, and the tin-graphite composite plating layer serves as a middle plating layer of the base material. According to the invention, the graphite particles exposed from the tin-graphite composite coating are partially or completely wrapped by the outermost tin coating, so that the graphite particles are not easy to fall off, the wear resistance and corrosion resistance of the electroplated part are improved, and the service life of the electroplated part is prolonged. In addition, the plating layer structure also has a relatively low friction coefficient, so that the insertion and extraction force of the electroplated part in the use process can be greatly reduced.

The invention relates to the technical field of new energy material and electrochemical device manufacturing, and discloses a graphene-based functional nano-composite electrode preparation system based on AI parameter optimization, which integrates physical modules such as intelligent material supply, synthesis modification, slurry forming, post-treatment and the like with online characterization equipment into a whole. And closed-loop control is realized through the central AI optimization unit. And the central AI unit establishes a prediction model of process parameters and electrode performance by utilizing a deep neural network, reversely optimizes the process parameters according to performance requirements by adopting a multi-target optimization algorithm, and drives a system to iteratively execute a'preparation-test-optimization 'cycle until a high-performance electrode meeting a target is obtained. According to the method, automatic, accurate and efficient reverse design from performance requirements to process parameters is achieved, the problems that a traditional preparation method depends on experience and is low in efficiency and poor in repeatability are solved, and the research and development efficiency and the product performance limit of the electrode material are remarkably improved.

The invention relates to a forming method for composite electroplating of an MEMS (Micro Electro Mechanical System) probe. Structural patterns of a needle tip or / and a needle body are / is photoetched through a micro-electro-mechanical process, the needle tip or / and the needle body is / are formed through electroplating of a composite plating solution after pretreatment, the composite plating solution is obtained by mixing a metal base solution and a turbid liquid, the metal base solution is a nickel base solution and / or a rhodium base solution, and the turbid liquid is a nickel base solution and / or a rhodium base solution. The suspension is formed by suspending nano-powder in water through a dispersing agent. Compared with the prior art, the technology provided by the invention has the following advantages that the MEMS process technology is combined with the composite plating solution to be used for various probe structures, and the performance of the prepared material is greatly improved compared with that of a pure metal coating; the composite plating solution prepared from the plating solution and the second-phase particles is high in stability, and the electroplating process is easy to operate; the nickel-based composite plating solution can be used for obtaining a main body material with higher hardness, better wear resistance and better flexural property; the rhodium-based composite plating solution is used for preparing a needle point material, has higher hardness and wear resistance, and improves the brittle fracture problem.

The utility model belongs to the technical field of diamond fretsaw machining, and particularly relates to electroplating equipment for diamond fretsaw machining, which comprises a bottom plate, a cleaning box, an electroplating device, an electroplating device and an electroplating device. The electroplating box is fixedly mounted at the top of the bottom plate, inlets and outlets are formed in the inner walls of the tops of the cleaning box and the electroplating box, and liquid outlets fixedly communicate with the rear sides of the cleaning box and the electroplating box; the number of the stand columns is two, and the bottom ends of the two stand columns are fixedly installed on the top of the bottom plate; the left end and the right end of the electric sliding rail are fixedly installed between the two stand columns respectively, switching between cleaning and electroplating of the diamond wire is achieved through a simple structure, manual operation transposition of personnel is not needed, meanwhile, drying operation after cleaning and electroplating of the diamond wire can be achieved, the drying efficiency is improved, and the working efficiency is improved. The machining process is high in automation degree, time-saving and labor-saving, and the electroplating efficiency and effect are greatly improved.

The invention belongs to the technical field of microbial protection and functional metal coating preparation, and particularly relates to a preparation method of a metal-based graphene oxide and zirconium oxide composite antibacterial coating on a flexible metal foil through magnetic field assisted jet electrodeposition. According to the method, a metal ion electroplating solution containing graphene oxide and zirconium oxide serves as a raw material on a flexible metal substrate, ferromagnetic particles are introduced to serve as a carrier, one-time forming is carried out under the action of a magnetic field through the scanning jet electrodeposition technology, and efficient fixing and uniform distribution of graphene oxide and zirconium oxide in a metal coating are achieved. The prepared coating is compact in structure and high in binding force, after the coating is in contact culture with escherichia coli and staphylococcus aureus for half an hour, the antibacterial rate reaches 94% or above, the antibacterial rate reaches 97% or above, and the coating has excellent stability and reliability. The method disclosed by the invention is simple and convenient in process and high in adaptability, can form a high-performance antibacterial coating on a flexible substrate, is suitable for the antifouling and anticorrosion fields of public health facilities, marine protection and engineering equipment, and has a wide industrial application prospect.

The application discloses a surface strengthening method suitable for low-temperature steel friction pairs of polar ship with complex configuration, and aims at solving the problems of insufficient surface wear resistance of the friction pairs and difficulty in surface strengthening in the existing polar ship with complex configuration.The surface strengthening method of the low-temperature steel friction pairs comprises the following steps: firstly, polishing and ultrasonic cleaning are conducted on the low-temperature steel friction pair materials; secondly, nano-diamond particle powder and spherical hard ceramic particles are mixed by ball milling; thirdly, a nickel-based plating solution is prepared; fourthly, supersonic particle bombardment treatment is conducted on the surface of the clean friction pair materials; fifthly, a nickel-based plating layer is prepared by adopting a chemical plating or brush plating process; sixthly, the step four and the step five are repeated for multiple times; seventhly, a composite plating solution is prepared; and eighthly, a self-lubricating coating is prepared.The application prepares a multilayer composite structure coating comprising a hardening layer, an alloy layer and a self-lubricating layer, the coating has good combination performance, high hardness and wear resistance, and is suitable for the low-temperature steel friction pairs of the polar ship with complex configuration.

Provided is a roughened copper foil capable of achieving both high adhesiveness with respect to a thermoplastic resin and exceptional high-frequency characteristics. The roughened copper foil has a roughened surface on at least one side thereof. In the roughened surface, the surface texture aspect ratio Str is 0.02-0.24, and the load area ratio Smr1 separating protruding peaks from a core portion is 1.0-15.0%. Str and Smr1 are values measured in compliance with ISO 25178 at a cutoff wavelength of 0.251 μm using an S-filter and at a cutoff wavelength of 4.5 μm using an L-filter.

The invention provides an online temperature control coordinated regulation and control method and system for diamond fretsaw electroplating baths, and relates to the technical field of process control over the temperature of the electroplating baths, and the method comprises the steps that the temperature of each electroplating bath and the flow rate of a plating solution are collected through a sensor, and the heat conduction strength is calculated in combination with the distance between the baths; determining a risk slot position according to the heat conduction intensity, marking the priority, and expanding to obtain an interfered slot position; packaging interference risk data through an instant sharing protocol, and transmitting and acquiring feedback information through a high-speed communication bus; correcting abnormal data, marking risk attributes to generate a temperature fluctuation vector, extracting peak value characteristics to obtain a production line wave and trend, and generating a linkage adjustment instruction sequence; kalman filtering is adopted to optimize instructions and distribute the instructions, and response delay is monitored; and if the delay exceeds the threshold value, classifying abnormal modes through a support vector machine to obtain a defect prediction label, and iteratively adjusting the current density and the pH value of the plating solution. The process defects caused by temperature fluctuation and delay are effectively avoided, and the stability of the electroplating process is guaranteed.

The present application mainly relates to the technical field of metal surface treatment, and particularly relates to a tin plating solution containing a matte tin plating additive and a preparation method thereof, which comprises 180ml / L of methyl sulfonic acid, 70ml / L of methyl sulfonic stannous acid and the matte tin plating additive, the matte tin plating additive comprises components with mass-volume concentrations as follows: 30-100g / L of a dispersant, 100-300g / L of an organic solvent, 0-10g / L of a grain refiner, 50-100g / L of a complexing agent, 5-10g / L of an antioxidant and water. The preparation of the matte tin plating additive comprises the following steps: step 100, adding water and the organic solvent into a reaction kettle and stirring; step 200, sequentially adding the dispersant, the grain refiner, the complexing agent and the antioxidant, and stirring for 2-5 hours to obtain the matte tin plating additive. In the present application, the combination of the dispersant and the refiner increases the gloss of the plating layer and improves the bonding force between the plating layer and the grain, and between the grains.

To provide a composite material with excellent abrasion resistance and heat resistance, in which a composite coating including carbon particles in a silver layer is formed on a raw material.SOLUTION: A composite material comprises a composite coating composed of a silver layer including carbon particles, which is formed on a raw material. The content of Sb in the composite coating is 1 mass% or less. A crystallite size of silver of the composite coating is 40 nm or less.SELECTED DRAWING: None

A biomimetic desert beetle self-transporting bone microgrinding head and a preparation process thereof, and relates to the field of medical instruments. The microgrinding head includes a hydrophobic matrix or a matrix having a hydrophobic plating layer. The matrix has a hydrophobic surface on which several hydrophilic abrasive particles are uniformly distributed. A process for preparing the microgrinding head is: selecting diamond abrasive particles and conducting oxidization treatment of the diamond abrasive particles; forming a hydrophobic matrix by scanning a surface of the matrix with a laser; or alternatively obtaining a hydrophobic plating layer by a chemical modification method; and combining the oxidized diamond abrasive particles with the hydrophobic matrix or the hydrophobic plating layer by electroplating to obtain a microgrinding head. The microgrinding head utilizes to achieve an effect of being capable of cooling rapidly and capturing cooling medium droplets and effectively transporting the droplets to a grinding arc region.

In a sliding member, a hard material is dispersed in a soft metal matrix to form a surface layer to improve its fatigue resistance. The sliding member has a substrate layer and a surface layer, wherein the surface layer has a metal matrix and a hard material dispersed in the matrix and which is harder than the matrix, the hard material having a slope in its hardness, the slope of which gradually decreases from the inside of the hard material to the surface.

To reduce the insertion / removal resistance between the terminal and the mating terminal. [Solution] The present invention discloses a terminal and a method for manufacturing a terminal. The terminal comprises a terminal body 10 having a mating portion 11 for mating with a mating terminal. A first bottom plating layer 11a is formed on the contact surface of the mating portion 11 of the terminal body 10, and a first silver-graphite plating layer 11c is formed on the first bottom plating layer 11a. Graphite particles are uniformly dispersed in the first silver-graphite plating layer 11c to improve the wear resistance and conductivity of the mating portion 11 of the terminal body 10. In the present invention, the silver-graphite plating layer has excellent wear resistance and conductivity, can significantly increase the number of mating cycles between the terminal and the mating terminal, and can reduce the insertion and removal resistance between the terminal and the mating terminal.

The invention discloses a traction wheel for manufacturing a diamond fretsaw and a manufacturing method, and relates to the technical field of electroplating, the traction wheel comprises a rack, a conveying mechanism, a traction wheel mechanism and a take-up mechanism, the rack is provided with the conveying mechanism, the traction wheel mechanism and the take-up mechanism; by arranging the conveying mechanism, wires can be automatically conveyed, base lines can be limited, and wire jumping is prevented; the conductive impeller and the traction wheel are designed in a split mode so that the conductive impeller can be replaced and overhauled conveniently, conductive liquid can be stirred through rotation of the conductive impeller, components in the conductive liquid can be effectively and evenly dispersed, and the precipitation and layering phenomena are prevented; the universal traction wheel mechanism is matched with the take-up mechanism, so that electroplated wires can be automatically wound.

The invention relates to the technical field of electro-deposition equipment, and provides a radioactive source auxiliary electro-deposition pressure stand and device.The pressure stand comprises a rack, a source table is arranged on the rack, and a supporting face used for supporting a radioactive source sheet is formed on the source table; the pressure mechanism is connected to the rack, and a pressing end facing the supporting surface is formed on the pressure mechanism; the pressure mechanism is slidably connected with the rack. The pressing end can get close to or get away from the supporting face along with sliding of the pressure mechanism. The pressure mechanism is connected with the driving mechanism through the transmission mechanism, and the transmission mechanism is used for converting driving of the driving mechanism into sliding of the pressure mechanism, so that the pressing end is close to or away from the supporting face. By means of the arrangement, a traditional connection mode of fastening through multiple screws is replaced, operation is easy and convenient, sealing reliability is high, operation efficiency can be further improved, in addition, the risk that workers make contact with electrolyte or an electro-deposition tank can be reduced, and safety is high.

A plating method includes: providing a nickel-containing plating solution; immersing a metallic substrate in the plating solution; and applying a voltage between the substrate and an anode to apply a plating. The providing comprises blending chromium powder with a precursor of the plating solution so that the plating solution is a Cr-containing plating solution. The as-applied plating forms a layer containing chromium particles from the powder.

A cutting tool includes a lower layer having an average thickness At from 0.3 pm to 6.0 pm and an upper layer having an average thickness Bt from 0.1 to 3.0 pm, and 2.0 ≤ At / Bt ≤ 5.0; the lower layer includes an alternating laminate of A1α sublayers with an average thickness at and A1β sublayers with an average thickness βt, and 0.5 nm ≤ at ≤ 4.0 nm, 0.5 nm ≤ βt ≤ 4.0 nm, and 0.7 ≤ βt / at ≤ 1.3; the A1α sublayers each have a composition AlxTi1-xN (the average xavg of x is 0.35 ≤ xavg ≤ 0.55); the A1β sublayers each have a composition AlyTi1-yN (average yavg of y is 0.60≤yavg≤0.80; 1.2≤yavg / xavg; and the upper layer has a composition AlaTi1-a-bSibN (average values of aavg and bavg are represented by 0.35 ≤ aavg ≤ 0.60 and 0.00 <bavg ≤ 0.15, respectively).

This invention discloses an anion-selective electrode, its preparation method, and its application. The anion-selective electrode consists of two electrodes with different loading amounts, each on a conductive substrate loaded with a metal / a sparingly soluble metal salt. The preparation method involves first depositing a large amount of metal on a conductive substrate, then using it as the anode and electrolyzing it for a long time in an anion solution containing anions capable of forming the sparingly soluble metal salt, resulting in an electrode composed of a large amount of metal and its sparingly soluble salt. Then, a small amount of metal is deposited on another conductive substrate, which is then used as the anode and electrolyzed for a short time in the same anion solution, resulting in an electrode composed of a small amount of metal and its sparingly soluble salt. The two electrodes form an electrode pair. The selective electrode of this invention consists of a pair of electrodes, exhibiting uniform size, high specific surface area, and abundant active sites. Compared with traditional electrodes, it is smaller in size. The preparation method is simple and reliable. When applied to fields such as anion detection, it demonstrates high selectivity and sensitivity, making it suitable for widespread application.

The invention relates to the field of copper foil composite materials, in particular to a composite copper foil for deep space exploration of a battery current collector and a preparation method and application of the composite copper foil. The nano-composite reinforced core layer is a composite copper matrix obtained by pulse electrodeposition; the high-conductivity surface layer is a copper layer which is epitaxially grown on the composite copper substrate by direct current deposition, and the copper layer is provided with a gradient structure for gradually increasing the conductivity of the composite copper substrate from inside to outside; the self-adaptive passivation layer is an amorphous composite ceramic protection layer used for preventing the high-conductivity surface layer from being oxidized. The nano-sized graphene with defects is introduced in the preparation process, and parameters of each step are accurately controlled, so that the comprehensive performance of the copper foil is improved, and the requirement of high-energy density design of the lithium ion battery is met.

This utility model relates to the field of electroplating line technology, and in particular to a diamond toroidal wire electroplating line, comprising: a machine base having several workstations and an loading / unloading station; each workstation of the machine base is provided with a bearing component for hanging fixtures, and a material-picking mechanism is slidably connected above the machine base for transferring the fixtures; wherein, a rotating component is also provided at the loading / unloading station, and during the loading stage, the material-picking mechanism picks up the fixtures loaded with the workpieces to be electroplated from the rotating component; the electroplating line of this utility model has made a breakthrough on the basis of traditional manual production, with the material-picking mechanism automatically transferring the fixtures at each workstation. From the first process to the last process, only the operator needs to operate at the loading / unloading station, without any manual intervention. Production quality can be uniformly controlled, improving work efficiency and product yield, thereby reducing personnel and production costs.

The present disclosure relates to a calcium phosphate coating that includes a plurality of nanometer sized calcium phosphate crystals that form a single layer. The coating is on a surface of a conductive substrate and is about 1 to 1000 nanometers thick, and greater than 25 percent of the coated surface area comprises the single layer of the crystals.

The present invention provides a method for producing an electrocatalyst for alkaline water electrolysis, comprising the following steps: (i) producing an aqueous electrolyte comprising suspended graphene and graphite nanoplatelet structures less than 100 nm thick in an electrochemical cell, wherein the cell comprises: (a) a negative electrode comprising graphite; (b) a positive electrode comprising graphite; and (c) an aqueous electrolyte comprising ions in a solvent, the ions comprising cations and anions, the anions comprising sulfate anions; and applying a current to the cell to obtain an amount of exfoliated graphene and graphite nanoplatelet structures in the aqueous electrolyte greater than 5 g / L; (ii) forming an electroplating bath containing suspended graphene and graphite nanoplatelet structures in an amount greater than 2 g / L, wherein the electroplating bath comprises an aqueous solution of nickel sulfate and the aqueous electrolyte of step (i) containing the suspended sub-100 nm graphene and graphite nanoplatelet structures in an amount greater than 5 g / L; (iii) electroplating a composite layer of Ni or Ni alloy and graphene and graphite particles onto a support from the electroplating bath to form an electrocatalyst. The present invention relates to the method comprising the steps of:

The present invention is directed to compositions, baths, and methods for composite plating where the composition and subsequent plating include polytetrafluoroethylene (PTFE), and more particularly, to compositions, baths, and methods of composite plating with PTFE included in a metal or alloy matrix where the materials used in the process, including materials in the composition, include no or essentially no PFAS (perfluoroalkyl substances) including PFOS (perfluorooctane sulfonate), GenX, PFOA (perfluorooctanoic acid), and / or fluorinated surfactants

The invention relates to a method for manufacturing a component (1) comprising a metallic base body (2) with at least one coating (3) arranged at least partially on it, comprising the following steps: - Providing a metal strip (2a), - Providing at least one coating bath (5, 5') and at least partially passing the sheet metal strip (2a) through the at least one coating bath (5, 5'), wherein the sheet metal strip (2a) is electroplated, - wherein the coating (3) is formed by optionally forming a first layer (3a) of nickel on the sheet strip (2a), and by forming at least one second layer (3b) of a tin-nickel alloy in which particles (4) in the form of graphite and / or molybdenum disulfide and / or tungsten disulfide and / or polytetrafluoroethylene are incorporated, directly on the sheet strip (2a) and / or on the optional first layer (3a), and - Forming a coated area of ​​the sheet metal strip (2a) by means of a deep drawing process, whereby the component (1) is simultaneously or subsequently cut out of the sheet metal strip (2a).

The utility model provides a novel tungsten filament surface zinc and silicon dioxide particle composite plating device. The novel tungsten filament surface zinc and silicon dioxide particle composite plating device comprises a flushing assembly, a screening assembly and a backflow assembly, the flushing assembly comprises a flushing pool, a water spraying pipe is arranged on the upper portion of the inner side wall of the flushing pool, and a plurality of nozzles are connected to the side wall of the water spraying pipe; the screening assembly comprises a filtering membrane, and the filtering membrane is arranged on the lower side of the interior of the flushing pool; and the backflow assembly is used for extracting and conveying the filtered electroplating liquid. According to the device disclosed by the utility model, the tungsten filament subjected to composite plating is placed in the flushing tank, water flow is sprayed out from the nozzles after passing through the water spraying pipe, the tungsten filament is flushed, electroplating liquid brought out by the tungsten filament is removed, the water flow containing the electroplating liquid falls on the filter membrane, the electroplating liquid is filtered out, and then the electroplating liquid is conveyed back into the electroplating bath by the pump body 1. Therefore, the tungsten filament is quickly cleaned, the carried electroplating liquid flows back to the electroplating bath, and the problem of waste of the electroplating liquid is avoided.

The invention relates to an electroforming system and method comprising an electrode defining a mandrel within a mixing solution, and the application of a voltage to the electrode in the mixing solution to form a composite metal layer on the electrode. The composite metal layer may have particles incorporated within a metal matrix and define a composite electroformed component. Figure 2 for the abstract.

The application provides a neodymium-iron-boron magnet two-dimensional composite corrosion-resistant plating layer and a preparation method thereof, and belongs to the technical field of rare earth permanent magnet material plating layer preparation. The method comprises the following steps: neodymium-iron-boron magnet pretreatment, to obtain a magnet to be electroplated with a clean and rough surface; the magnet to be electroplated is soaked in a deposition solution, and ion exchange electrodeposition is carried out by applying a pulse electric field, and under the synergistic action of electrostatic assembly and the pulse electric field, a two-dimensional composite plating layer is deposited on the surface of the magnet to be electroplated; wherein the deposition solution comprises a nickel-based electroplating solution, a complexing agent and two-dimensional Ti3C2T x ; the complexing agent is selected from ammonia, EDTA-2Na or ammonium citrate. The application provides a method for applying two-dimensional Ti3C2T x to an alloy plating layer, which further improves the corrosion resistance of the electrodeposited plating layer on the surface of the neodymium-iron-boron magnet.

The present invention relates to methods for treating articles made of reinforced cementitious material, with the aim of protecting them and increasing their durability, which brings about both an improvement in the mechanical properties of the cementitious matrix and an improvement in the corrosion resistance of the steel bars.