1041results about "Electrolytic coatings" patented technology

A method of modifying a bottomhole assembly that includes metal plating at least a portion of a bottomhole assembly, wherein the metal-plating comprises superabrasive nanoparticles is disclosed.

Variable property deposit, at least partially of fine-grained metallic material, optionally containing solid particulates dispersed therein, is disclosed. The electrodeposition conditions in a single plating cell are suitably adjusted to once or repeatedly vary at least one property in the deposit direction. In one embodiment denoted multidimension grading, property variation along the length and/or width of the deposit is also provided. Variable property metallic material deposits containing at least in part a fine-grained microstructure and variable property in the deposit direction and optionally multidimensionally, provide superior overall mechanical properties compared to monolithic fine-grained (average grain size: 2 nm-5 micron), entirely coarse-grained (average grain size: >20 micron) or entirely amorphous metallic material deposits.

Lightweight articles comprising a polymeric material at least partially coated with a fine-grained metallic material are disclosed. The fine-grained metallic material has an average grain size of 2 nm to 5,000 nm, a thickness between 25 micron and 5 cm, and a hardness between 200 VHN and 3,000 VHN. The lightweight articles are strong and ductile and exhibit high coefficients of restitution and a high stiffness and are particularly suitable for a variety of applications including aerospace and automotive parts, sporting goods, and the like.

A catalyst material for carbon nanotube synthesis includes a uniform dispersion of host particles on a substrate. The host particles themselves include catalyst nanoparticles that are effective to catalyze nanotube syntheses reactions and provide nucleation sites. Methods for preparing catalyst materials include co-sputtering a catalytic species and a host species to form a precursor thin film on a substrate, followed by an oxidation reaction of the precursor thin film in air. The precursor thin film can be patterned on the substrate to limit the locations of the catalyst material to well-defined areas. Methods for nanotube synthesis employ CVD in conjunction with the catalyst materials of the invention. During the synthesis, the catalyst nanoparticles catalyze carbon nanotubes to grown from a carbon-containing gas.

Articles containing fine-grained and/or amorphous metallic coatings/layers on at least part of their exposed surfaces are imprinted with surface structures to raise the contact angle for water in the imprinted areas at room temperature by equal to or greater than 10°, when compared to the flat and smooth metallic material surface of the same composition.

Disclosed herein are methods to create medical devices and medical devices including bioactive composite structures. The methods include using template-assisted electro- or electroless deposition or codeposition methods for providing implantable medical devices coated with bioactive composite structures and also include layering deposited or codeposited metal layers with layers of bioactive materials. In one use, the implantable medical devices of the present invention include stents with bioactive composite structure coatings.

The invention relates to a wearable compound layer material for machine parts and a manufacturing method and equipment thereof. The wearable compound layer material is a metal-based wearable compound layer material which is composed of a matrix metal and lots of particles or fibers dispersed and distributed in the matrix metal, thereby having a multi-phase structure. The wearable compound layer material is manufactured by a direct-current electroplating or pulse electroplating method. The direct-current electroplating or pulse electroplating equipment is composed of parts such as an electroplating power source, an electroplating tank, a metal anode or a metal alloy anode, a machine part substrate cathode, a stirring device, a solution circulating device, a heating and temperature control device, an additive supplementing device and the like. The wearable compound layer material for machine parts provided by the invention is obviously superior in performance to good-quality cast iron wearable parts, good-quality cast steel wearable parts and wearable parts for surface heat treatment of common steel and good-quality steel commonly employed in the present product. The wearable compound layer also has high-temperature abrasive resistance and excellent corrosion resistance while having excellent abrasive performance; and the internal stress of the coating is very low.

Free standing articles or articles at least partially coated with substantially porosity free, fine-grained and/or amorphous Co-bearing metallic materials optionally containing solid particulates dispersed therein, are disclosed. The electrodeposited metallic layers and/or patches comprising Co provide, enhance or restore strength, wear and/or lubricity of substrates without reducing the fatigue performance compared to either uncoated or equivalent thickness chromium coated substrate. The fine-grained and/or amorphous metallic coatings comprising Co are particularly suited for articles exposed to thermal cycling, fatigue and other stresses and/or in applications requiring anti-microbial properties.

Disclosed is a negative electrode for a nonaqueous secondary battery comprised of a current collector and an active material structure containing an electro-conductive material having low capability of forming a lithium compound on at least one side of the current collector, the active material structure containing 5 to 80% by weight of active material particles containing a material having high capability of forming a lithium compound. The active material structure preferably has an active material layer containing the active material particles and a surface coating layer formed on the active material layer.

A sports article includes a portion that includes a nanostructured material. The nanostructured material includes a metal, and the nanostructured material has an average grain size that is in the range of 2 nm to 5,000 nm, a yield strength that is in the range of 200 MPa to 2,750 MPa, and a hardness that is in the range of 100 Vickers to 2,000 Vickers. The sports article can be any of a variety of sports equipment and associated components, such as a golf club, a baseball bat, a softball bat, a lacrosse stick, or a hockey stick.

A molten salt composition is disclosed containing two or more types of molten salt MTFSI whose anion is an imide anion TFSI and whose cation is an alkali metal M exhibits a lower electrolyte melting point and a wider operating temperature range than a simple salt does. This brings about various advantages such as a wider range of materials that are chosen for use in batteries and the like.

Erosion resistant coating compositions include hard particles in a metal matrix such as nickel-based, cobalt-based and iron-based matrices applied by a plating process for complex geometry or hard to access component surfaces or by thermal spray processes for line of sight applications. These materials and processes are especially suited for providing erosion resistance to hydroelectric turbine components.

A new abrasive blade tip treatment is disclosed with the potential to provide improved blade tip clearance control in the turbine section of modern industrial gas turbines (IGT's). This blade tip treatment is composed of a unique combination of abrasive compounds that result in improved resistance to thermal degradation while retaining desirable initial cutting capacity.

The present invention relates to a method of fabricating a high power light-emitting device using an electrolessly or electrolytically plated metal composite heat dissipation substrate having a high thermal conductivity and a thermal expansion coefficient matching with the device.

The present invention relates to an apparatus for detecting one or more analytes, for example analytes selected from the group comprising nucleic acids, metabolites, peptides, proteins, hormones, pesticides, neurotransmitters, ions in blood, electrolytes, toxic gases, pH and biological warfare agents, the apparatus comprising an insulating substrate, at least one first electrode on the substrate at least one elongate nanostructure extending from and electrically connected to the or each said electrode and extending over the surface of the wafer away from the respective electrode, a passivating layer covering the or each electrode, but not all of said at least one elongate nanostructure, a well crossing the at least one elongate nanostructure extending from the or each electrode and forming a static reservoir for a liquid being investigated for the presence of at least one analyte, a reference electrode provided on said substrate within said well or insertable into said well and respective readout pads electrically connected to the or each electrode and to the reference electrode if the latter is provided on the substrate, the at least one elongate nanostructure being capable of being functionalized for detecting one or more analytes.

An electrode is described. The electrode has a substrate having a first and a second surface; a conductive layer; an electroactive layer that includes nanoparticles having an average size from 5 nm to 30 nm; at least one electroactive chemical and at least one organic binder material. The electroactive chemical binds to the surface of the nanoparticles. The conductive layer is disposed on the second surface of the substrate, and the electroactive layer is disposed on the conductive layer. Also described are electrochromic articles including the electrode, and a coating composition that can be utilized to fabricate the electrode.

A photovoltaic cell exhibiting an overall conversion efficiency of at least 9.0% is prepared from a copper-indium-gallium-diselenide thin film. The thin film is prepared by simultaneously electroplating copper, indium, gallium, and selenium onto a substrate using a buffered electro-deposition bath. The electrodeposition is followed by adding indium to adjust the final stoichiometry of the thin film.

Disclosed herein is a method for manufacturing metal/carbon nanotube nano-composite using electroplating, more particularly, to a method for manufacturing metal/carbon nanotube nano-composite comprising: adding carbon nanotubes and cationic surfactants in metal plating solution including metal or metal salt and performing electroplating in the cathode.

According to the present invention, the method for manufacturing metal/carbon nanotube nano-composite using electroplating comprises: immersing carbon nanotubes in acid solution and filtering the solution and carrying out heat treatment; adding the heat treated carbon nanotubes and cationic surfactants in metal plating solution including metal or metal salt and dispersing the carbon nanotubes; and providing a cathode and an anode in the metal plating solution including the carbon nanotubes and the cationic surfactant, to which current is applied and carrying out electroplating in order to obtain metal/carbon nanotube nano-composite(complex material).

The invention discloses a method for producing a grinding electroplated diamond wheel. The method comprises the steps of: 1, preparing an electroplating bath; 2, pre-treating before plating; 3, pre-plating, wherein the current density is 1.2-1.8A/dm<2>, and the thickness of a pre-plating layer is 7-10micrometers; 4, magnetically sand feeding, namely applying magnetic induction intensity of 400-1000mT on a plating surface of a grinding wheel base body so as to absorb a diamond abrasive through the plating surface of the grinding wheel base body, and depositing an electroplating layer through electrifying, wherein the sand feeding current density is 0.5-0.8A/dm<2>, and the thickness of the plating layer is 15% of the average particle size of the diamond abrasive; 5, thickening, wherein the current density is 1.6-2.0A/dm<2>, and the thickness of the thickened plating layer is 65% of the average particle size of the diamond abrasive; and 6, treating after the plating so as to obtain the grinding electroplated diamond wheel. By utilizing the method for producing the grinding electroplated diamond wheel, the abrasive with fine granularity can be uniformly solidified on the plating surface, and the produced grinding wheel has good shape retention performance and satisfies grinding requirements on high precision and high efficiency.

A method of forming a copper layer with increased electromigration resistance. A doped copper layer is formed by controlling the incorporation of a non-metallic dopant during copper electroplating.

Methods for fabricating a photovoltaic device on complexly shaped fabricated objects, such as car bodies are disclosed. Preferably the photovoltaic device includes absorber layers comprising Copper, Indium, Gallium, Selenide (CIGS) or Copper, Zinc, Tin, Sulfide (CZTS). The method includes the following steps: a colloidal suspension of metal surface-charged nanoparticles is formed; electrophoretic deposition is used to deposit the nanopartieles in a metal thin film onto a complexly shaped surface of the substrate; the metal thin film is heated in the presence of a chalcogen source to convert the metal thin film into a metal chalcogenide thin film layer; a buffer layer is formed on the metal chalcogenide thin film layer using a chemical bath deposition; an intrinsic zinc oxide insulating layer is formed adjacent to a side of the buffer layer, opposite the metal chalcogenide thin film layer, by chemical vapor deposition; and finally, a transparent conducting oxide is formed adjacent to a side of the intrinsic zinc oxide, opposite the buffer layer, by chemical vapor deposition.

The present invention provides an article, at least part of it being coated by inorganic fullerene-like (IF) nanoparticles or composite containing such nanoparticles. Preferably, the invention provides an article made of metal, for use in dentistry or medicine e.g. archwire, needle or catheter, having a friction-reducing film, and methods for coating such articles with a friction-reducing film.

An apparatus and method for highly controlled electrodeposition, particularly useful for electroplating submicron structures. Enhanced control of the process provides for a more uniform deposit thickness over the entire substrate, and permits reliable plating of submicron features. The apparatus includes a pressurized electrochemical cell to improve plating efficiency and reduce defects, vertical laminar flow of the electrolyte solution to remove surface gases from the vertically arranged substrate, a rotating wafer chuck to eliminate edge plating effects, and a variable aperture to control the current distribution and ensure deposit uniformity across the entire substrate. Also a dynamic profile anode whose shape can be varied to optimize the current distribution to the substrate. The anode is advantageously able to use metallic ion sources and may be placed close to the cathode thus minimizing contamination of the substrate.

The invention discloses a method for preparing a high-coercivity sintered Nd-Fe-B permanent magnet. The method includes the following steps that firstly, the vacuum rapid hardening technology is used for preparing Nd-Fe-B alloy magnetic material blank; secondly, chamfering, cleaning, washing, surface modifying and washing are sequentially performed on the blank; thirdly, a processed permanent magnet is placed to a nickel/heavy rare earth composite coating for being electroplated; fourthly, a sintered Nd-Fe-B magnetic material is placed into a vacuum heat treatment furnace to receive heat treatment. With the technology of compositing heavy rare earth on a nickel-plate, heavy rare earth solid matter can be effectively utilized, and maximum benefits of rare earth resources are achieved. Meanwhile, it is ensured that the proportion of the content of the heavy rare earth in the nickel-plate is stable, volatile matter which is prone to decomposition does not exist in the nickel-plate in subsequent heat treatment to pollute a vacuum heat treatment system, a production device with infiltration of the heavy rare earth can be stable continuously, the application range of a technology is wider, and the method can be popularized and applied in an enterprise more easily.

The invention is concerned with a kind of milling stuff three-dimensional multi-layer controllable optimized collocation electroplated tools and its produce method, being the micro abrasive cluster optimized collocation and thickened composite plating mask. The micro abrasive cluster optimized collocation bases on the ratio to abrasive and air and the number of wear debris layer. This kind of tool has optimized designed surface abrasive cluster collocation and takes double layers of composite masks as plating mask. It adjusts the thickness of thickened composite plating mask to change the thickness of middle layer and controls the erode degree of middle layer and makes some hollow on it, and the shape of abrasive cluster formed by composite plating is like a foot pace. This abrasive tool and abrasive cluster optimized collocation are fit for discharging grinding bits, entering of grinding liquid and transfer of grinding heat to enhance the grinding capability of milling tool. It reduces the produce cost and the demand of machining precision to base stuff and assembly by adjusting the tool with multi-layer abrasive.

A brazing filler metal sheet is prepared. The brazing filler metal sheet includes a brazing filler metal layer, a sticking material layer, and a released paper. The brazing filler metal layer includes a brazing filler metal. A coating material layer is laminated on the brazing filler metal layer. The coating material layer includes a mixture of coating material particles and a binder. As the coating material particles, MCrAlY particles and abrasive particles are used. The coating material layer is then dried, and the brazing filler metal sheet is cut (step S4), and adhered to a rotor blade. The rotor blade is heated, to melt the brazing filler metal. The brazing filler metal diffuses due to the heat treatment holding process. A solidified layer is then formed by cooling. This solidified layer is subjected to blasting to allow the cubic boron nitride particles to protrude.

The invention relates to a sand feeding method for a diamond wire saw. The method comprises the following steps of: (1) preparing a diamond electroplating solution, wherein each litre of the electroplating solution comprises 10-20g of diamond, 100-240g of NiSO4, 40-100g of NiCl2, 10-50g of CoSO4 and 40-80g of H2BO3; (2) adding the electroplating solution to a sand feeding tower, wherein the sand feeding tower is in the shape of a column or polygon and is arranged vertically, and 2 to 8 Ni anodes are uniformly arranged on the inner wall of the sand feeding tower; and (3) making a bare metal wire penetrate into the bottom of the sand feeding tower and out of the tower top at a speed of 2-8 m/min; by adopting the bare metal wire as the cathode and Ni as the anode during the penetration of the bare metal wire, applying DC (Direct current) and plating diamond on the bare metal wire. The diamonds on the diamond wire saw prepared by the invention are uniformly distributed and are not accumulated.

The invention provides a method and a device for continuously preparing a high-silicon steel ribbon under a magnetic field. The method adopts a composite plating method and comprises the following steps of adding 0.1-3mum of ferrosilicon powder in an iron plating solution, using a low-silicon steel strip as an electrolytic cathode, plating 7.0-99 wt % of thick composite plating layer of Si in the composite electrolytic solution, obtaining uniform 6.5 wt% of high-silicon steel ribbon of the Si after thermal treatment, and carrying out continuous preparation. According to the device provided by the invention, on the basis of the traditional composite plating device, a constant magnetic field of which the magnetic field strength is 0.01-20 T is applied, the low-silicon steel ribbon which is used as a cathode is magnetized through the magnetic field, a stronger gradient field is formed on the surface, ferrosilicon particles in a plating solution are adsorbed to the surface of the cathode of the low-silicon steel strip by utilizing a magnetic field force, thus a high-silicon plating layer can be obtained through a composite iron plating process, and then, the high-performance high-silicon steel ribbon of which the silicon content is up to 6.5 wt% can be prepared through follow-up climate protection thermal treatment. The method and the device, disclosed by the invention, have the advantages that the operation is simple, the low-temperature silicon increasing operation is carried out, the cost is low, and the high-silicon steel ribbons can be continuously prepared.

Disclosed herein is a porous silicon-based electrode active material, comprising a silicon phase, a SiO_x (0<x<2) phase and a silicon dioxide phase and having a porosity of 7-71%.

The invention discloses a composite coating material and preparing method and equipment in the metallurgical conticaster crystallizer, which is composed of nickel-based composite material or nickel alloy composite material, which consists of base metal and large scale of particle or fiber in the base with polyphase structure, wherein the DC composite plating or composite pulse plating equipment is composed of plating power, plating groove, nickel anode or nickel alloy anode, metallurgical conticaster crystallizer, stirring device, liquid circulating device, heating and temperature-controlling device.