113 results about "Alloy coating" patented technology

This invention provides a low-temperature sintering silver paste for solar cells, its sintering method, and its application. The low-temperature sintering silver paste comprises: 70 wt.%–90 wt.% micro / nano silver powder, 5 wt.%–20 wt.% organic carrier, and 1 wt.%–10 wt.% Ni-based coated glass powder; wherein the micro / nano silver powder comprises 60 wt.%–80 wt.% micron-sized silver spheres with a particle size of 1–3 μm and 20 wt.%–40 wt.% nano-sized silver spheres with a particle size of 20–80 nm; the Ni-based coated glass powder consists of Bi-B-Si glass powder and a magnetic Ni-based alloy coating layer coated with the Bi-B-Si glass powder. This invention introduces micro-nano silver powder and Ni-based coated glass powder into the silver paste. The Ni-based alloy coating layer is magnetic, which enhances the magnetic properties of the glass powder. By combining micro-nano silver powder with electromagnetic field composite sintering technology, the silver paste is rapidly and densely sintered at a lower temperature, which effectively improves electrode conductivity, reduces contact resistance, and enhances contact performance with the silicon substrate, thereby improving photoelectric conversion efficiency and shortening sintering time.

[Problem] To improve the wear resistance of a coating film, which is formed of a Ni-based self-fluxing alloy, in a glass-manufacturing member having the coating film. [Solution] A glass-manufacturing member 1 for conveying or forming glass having a viscosity of logη=3 to 14.6, includes: a body 11 formed of a metal; and a coating film 12 composed of an Ni-based self-fluxing alloy and formed on the surface of the body. The Ni-based self-fluxing alloy contains more than 0 mass% and not more than 3 mass% of P, more than 0 mass% and not more than 5 mass% of Si, and Ni as the remainder in an amount greater than the other components. The metal structure of the coating film includes a first phase and a second phase. The concentration of P in the first phase is higher than the average concentration of P in the entire Ni-based self-fluxing alloy, and the concentration of P in the second phase is lower than the concentration of P in the first phase. In an image obtained by observing the metal structure with a microscope, the range of the area ratio of the second phase in a 10-µm-square region is 0-0.7.

The application discloses an accident-tolerant nuclear fuel cladding coating and a preparation method and application thereof, and belongs to the technical field of nuclear fuel cladding coating. The coating is a Cr-based binary alloy coating deposited on the surface of a zirconium alloy base, and is selected from Cr-Fe, Cr-V or Cr-Mo alloy coatings, wherein the content of Fe is 3-10 wt%, the content of V is 3-20 wt%, and the content of Mo is 1-5 wt%. The preparation method adopts a magnetron sputtering process, and is realized by controlling parameters such as vacuum degree, temperature, gas pressure, bias voltage and power. Through alloying, the application effectively inhibits the element interdiffusion between the coating and the zirconium alloy base at high temperature, reduces the formation of brittle intermetallic compounds and Kirkendall holes, significantly improves the thermal stability and service life of the coating under accident conditions, meanwhile, the process is mature, the coating quality is high, and the coating is suitable for surface protection of zirconium alloy fuel cladding of nuclear power stations.

The present invention provides a thermoformed component with excellent coating corrosion resistance and a method for manufacturing the same. The thermoformed component includes a base steel and an aluminum alloy coating. The base steel contains 0.015-0.10% Sb by weight. The aluminum alloy coating includes an intermediate layer and an outermost layer located on top of the intermediate layer.

This invention provides a device and method for magnetic field-assisted plasma modification of laser cladding coatings under ultra-high pressure. A nickel-based alloy substrate is placed in a sealed working chamber. Inert gas is continuously injected into the sealed working chamber to maintain an ultra-high pressure environment. A molten pool is formed by laser irradiation of nickel-based alloy powder deposited on the surface of the substrate. Simultaneously, metal plasma is used as an element dopant in the nickel-based alloy coating. The metal plasma is sprayed onto the surface of the nickel-based alloy substrate, and the plasma-state active element dopant accumulates on the surface of the molten pool under the control of a magnetic field. Under the synergistic effect of the ultra-high pressure environment and the alternating magnetic field, the metal plasma penetrates into the molten pool and reacts with the molten material, resulting in a nickel-based alloy cladding coating with uniform active element doping. This invention achieves effective doping of the active element Hf into the nickel-based alloy coating, improving the coating's high-temperature resistance.

This invention belongs to the field of surface strengthening technology, specifically relating to a composite coating resistant to cavitation and abrasion and its preparation method. The preparation method of the composite coating resistant to cavitation and abrasion provided by this invention includes the following steps: (1) preparing a high-elasticity alloy coating on the substrate surface using laser cladding technology; (2) preparing a hard alloy coating on the surface of the high-elasticity alloy coating using flame spraying; and (3) preparing a sealing protective layer on the surface of the hard alloy coating. This method uses laser cladding technology to achieve metallurgical bonding between the high-elasticity alloy coating and the substrate, improving the bonding force between the coating and the substrate, and also has high processing precision, maintaining high quality even for thinner coatings; the hard alloy coating formed by flame spraying has high hardness and good wear resistance, further improving the cavitation and abrasion resistance of the composite coating.

The application provides a high-performance bulletproof ceramic and a preparation method thereof, and the method comprises the following steps: preparing a hard alloy coating on a metal transition layer on the surface of a ceramic base by using a supersonic flame spraying method; then, a plurality of blind hole grooves arranged in a matrix interval are opened on the surface of the hard alloy coating by using a laser etching method; then, the blind hole grooves are filled with soft metal by using the supersonic flame spraying method; after the upper surface of the soft metal in each blind hole groove is polished to be flush with the upper surface of the hard alloy coating, a hard ceramic coating is prepared on the upper surface of the hard alloy coating and the soft metal by using an atmospheric plasma spraying method. The soft metal filled in each blind hole groove of the hard alloy coating captures the broken ceramic to achieve a secondary anti-penetration effect, and the soft area formed by the soft metal and the hard area formed by the hard alloy coating make the bullet body bear uneven stress to achieve the effect of deflecting the penetration path.

This invention belongs to the field of hydrogen barrier coating technology, specifically relating to a nickel-phosphorus-based amorphous-nanocrystalline composite hydrogen barrier coating and its preparation method. The coating uses a nickel-phosphorus alloy as an amorphous matrix, embedding a composite nano-reinforcing phase composed of core-shell structured phosphide nanoparticles, molybdenum disulfide-metal hydroxide heterostructure two-dimensional nanosheets, and silane coupling agent-modified hexagonal boron nitride nanosheets. The microstructure exhibits a coexistence of amorphous and nanocrystalline phases, with a small amount of alloying elements added to the matrix. This invention involves the controlled preparation of three composite nano-reinforcing phases, which are then combined with nickel salts and a phosphorus source to prepare a uniformly dispersed composite plating solution. This solution is deposited on a pretreated steel substrate to form an amorphous nickel-phosphorus alloy coating, followed by gradient heat treatment to construct the target microstructure. This coating, through multi-phase synergy, enhances substrate adhesion and hydrogen barrier performance, showing promising industrialization prospects in hydrogen energy storage and transportation, and petrochemical equipment protection.

The invention discloses a high-toughness corrosion-resistant pearlite steel wire with an adjustable honeycomb structure characteristic as well as a preparation method and application of the high-toughness corrosion-resistant pearlite steel wire, and belongs to the technical field of pearlite steel wire processing. The surface of the steel wire is provided with an aluminum alloy coating which is metallurgically bonded with a base body and has the thickness of 8-10 microns; the steel wire is subjected to ultrasonic treatment to generate a structure with a honeycomb characteristic, and the obtained cementite lamella serves as a hard phase to form a regular'honeycomb wall ', so that a core supporting effect is achieved; the ferrite serving as a plastic phase is coordinated and deformed under the action of external force by forming a honeycomb unit with uniform size, so that more energy is absorbed and crack propagation is hindered; and an Al2O3 protective film is instantaneously formed on the surface of the aluminum alloy coating, so that the aluminum alloy coating has excellent corrosion resistance and better mechanical properties. The Vickers hardness of the aluminum alloy reaches up to 830-850 HV < 0.1 >, the tensile strength of the aluminum alloy reaches 3100-3200 MPa, and the ductility of the aluminum alloy reaches 16-20%.

DEPCT66 What was revealed was a hot-molded assembly with excellent paint adhesion and resistance. Post-painting corrosion when subjected to electrostatic deposition painting. The zirconium-based chemically conjugated hot-molded components revealed herein include: Steel base plate; a Fe-Zn-Al-Mg based alloy coating containing an alpha-Fe phase. The gamma phase is formed on at least one surface of the base steel plate at a weight of coating material. The surface area is 40-400 g / m²; and an oxide layer containing Zn, Al, and Mg forms on the coating. Fe-Zn-Al-Mg based alloys, where the gamma-I / alpha I ratio is 0.5 or less when measured. By X-ray diffraction using a Co-K alpha radiation source (wavelength: 1.79021 angstroms). At an angle of incidence of 25 degrees, where I gamma is the intensity of the diffraction peak of the plane (411) of the phase. The gamma appearing in the angular range of 41.5 degrees is less than or equal to 2 theta less than or equal to 43.0 degrees, and alpha is the peak intensity. The plane diffraction (110) of the alpha-Fe phase appearing in the angular range of 51.0 degrees is less than or equal to 2 theta, less than or equal to 52.0. The degree, and the sum of the concentrations of Al and Mg in the oxide layer, is 28 percent by atom. Or more -----------------------------------------------------------

The application belongs to the technical field of powder metallurgy, and particularly discloses a nanoscale oxide particle dispersed aluminum-titanium target material and a preparation method and application thereof. x The nanoscale oxide particle dispersed aluminum-titanium target material has a double-layer structure, including a plated raw material layer and a base layer. x The plated raw material layer is composed of Al, Ti and MeO, wherein the mass percentage of Al and Ti accounts for 80-95%, and the mass percentage of MeO accounts for 5-20%; and the base layer is composed of Al and Ti or pure Al. The nanoscale oxide particle dispersed aluminum-titanium target material and the preparation method and application thereof have the advantages that the aluminum-titanium target material preparation process flow is simple, the production efficiency is high, the method is economic and environmentally friendly, and the method is suitable for batch production; the aluminum-titanium target material prepared by the method solves the binding problem of brittle target material, the target material has high density, meets the demand of hard alloy coating film plating, has no cracking problem in the plating process, and has high coating hardness and good wear resistance.

The application provides an iron-based alloy powder, a large-thickness high-hardness wear-resistant coating and a preparation method. By precisely controlling the proportion of key elements such as C, Si, Mn, Cr, V, W, B and Nb in the iron-based alloy powder, the hardness and toughness of the coating are synergistically improved, wherein the addition of the B element can effectively change the morphology of carbides in the Fe-C-X alloy system, convert the net-shaped carbides at the grain boundary which are prone to cause brittleness into eutectic carbides, significantly improve the grain boundary toughness, and thus reduce the cracking sensitivity of the coating in the rapid solidification process. The iron-based alloy powder makes the coating have good crack resistance while maintaining high hardness, breaks through the technical bottleneck that the hardness and thickness of the traditional iron-based alloy coating are restricted by each other, and overcomes the technical problems that the existing iron-based alloy coating is prone to cracking under high hardness and cannot simultaneously have large thickness and high wear resistance.

A laser cladding dual-phase high-entropy alloy coating and a preparation method thereof are provided. The laser cladding dual-phase high-entropy alloy coating includes the following raw materials in atomic percentage: 9 to 16 percent (%) of aluminum (Al), 11 to 17% of chromium (Cr), 11 to 18% of iron (Fe), 13 to 20% of titanium (Ti), 10 to 15% of vanadium (V), and 28 to 33% of nickel (Ni).

A preparation method of an electroplated part includes the steps of plating a porous metal coating layer, placing the porous metal coating layer in a graphite colloid, and depositing graphite colloidal particles into the porous metal coating layer. The porous metal coating layer is plated at or proximate an outer side of a substrate of the electroplated part. The graphite colloidal particles are deposited into pores of the porous metal coating layer from the graphite colloid to form a graphite alloy coating layer.

The utility model relates to vacuum coating equipment technical field especially is concerned on a kind of equipment of magnetron sputtering deposition multilayer high-entropy alloy coating, including vacuum cavity and the workpiece rotating stand being set in the inside of vacuum cavity, the cylindrical target assembly extends to the inside central region of vacuum cavity along axial direction, the lateral target assembly includes lateral target material, backplate and the composite magnetic field generating unit of installation in the corresponding vacuum cavity inboard side of backplate, the composite magnetic field generating unit includes permanent magnet array and electromagnetic coil assembly, which is arranged around or stacked on the side or back of permanent magnet array, an independent power supply terminal is respectively provided on the cylindrical target assembly and each lateral target assembly, the vacuum cavity is also connected with air interface, the utility model realizes the millisecond level accurate switching of bias, gas ratio, deposition time and power supply power, supports the continuous preparation of multilayer high-entropy alloy coating with variable composition and excellent bonding force under single vacuum atmosphere.

The application designs a hot-dip galvanizing alloy with higher corrosion resistance and inhibiting silicon reactivity. The design method is as follows: the composition of the hot-dip galvanizing alloy is designed according to the composition range of the hot-dip galvanizing alloy, the hot-dip galvanizing alloy coating is prepared by using the drying solvent method, the microstructure of the alloy coating is observed and analyzed, the thickness of each compound layer is counted and compared, the composition is optimized for electrochemical testing, and the corrosion resistance is evaluated. The content of each component of the alloy is 0.4% in terms of atomic percentage, and the content of Zn is 99.6%.

The application discloses an anti-abrasion cobalt-based cladding powder, an ultrafine lamellar eutectic cobalt-based coating and a preparation method, and belongs to the technical field of anti-abrasion and anticorrosion alloy coating. The cladding powder comprises 15.0-20.0% of Ni, 14.0-15.0% of Cr, 22.0-25.0% of Mo, 2.7-2.9% of Si and 0.07% or less of C, and the rest is Co, in percentage by mass. The application utilizes the difference in mixing enthalpy of a specific content of Ni element and other elements in the cobalt-based alloy system, changes the non-equilibrium solidification path in laser cladding, suppresses the excessive precipitation and growth of Laves phase, and forms a Laves phase / (gamma-Co / Ni) lamellar ultrafine eutectic structure with excellent strength and toughness. Compared with the prior art, the application can significantly reduce the crack sensitivity of the coating without sacrificing the comprehensive performance of the coating in abrasion resistance and corrosion resistance.

This invention relates to a gradient-structured rare-earth nitride-coated ceramic solid solution-strengthened high-wear-resistant refractory high-entropy alloy coating and its preparation method. First, an optimized sol-gel method is used to in-situ coat a nano-scale YN layer onto the surface of micron-sized Si3N4 particles, constructing a core-shell structured YN@Si3N4 composite precursor. Subsequently, this precursor is mixed with pre-alloyed TiZrNbMo high-entropy alloy powder in different proportions, and a base layer, a transition layer, and a wear-resistant functional layer are sequentially constructed on the substrate surface from the inside out using laser cladding technology. The amount of YN@Si3N4 added in this gradient coating increases in a gradient distribution from 0 to 3.0 wt.%, effectively alleviating the thermal stress mismatch between the coating and the substrate. This invention achieves synergistic strengthening through Si substitution solid solution and N interstitial solid solution, while eliminating brittle phase segregation, porosity, and crack defects through gradient structure design and melt pool dynamics control, preparing a single-phase BCC structure coating with both high strength and toughness and excellent wear resistance, significantly improving the service reliability of aerospace components under extreme conditions.

This invention belongs to the technical field of corrosion-resistant alloy materials, specifically disclosing a refractory high-entropy alloy resistant to liquid lead-bismuth corrosion, a cladding material, and its preparation method. The refractory high-entropy alloy resistant to liquid lead-bismuth corrosion is composed of the following chemical elements: Nb 18–27 at.%; Mo 18–27 at.%; Ta 18–27 at.%; W 18–27 at.%; Cr 10–25 at.%; Si: 0–9 at.%; wherein the Si content is not zero. The cladding material is prepared by multi-target magnetron sputtering to prepare a refractory high-entropy alloy coating resistant to liquid lead-bismuth corrosion on the surface of a substrate. The doping of Cr and a small amount of Si in the refractory high-entropy alloy resistant to liquid lead-bismuth corrosion of this invention promotes the formation of a protective continuous Cr₂O₃ layer, preventing direct contact between the liquid lead-bismuth alloy and the coating material, thereby significantly improving the coating's resistance to liquid lead-bismuth alloy corrosion.

The application provides a sub-micron cell structure wear-resistant and oxidation-resistant high-entropy alloy coating and a preparation method and application thereof, and belongs to the technical field of metal material surface treatment.The sub-micron cell structure wear-resistant and oxidation-resistant high-entropy alloy coating provided by the application comprises the following components in terms of mass fraction: Co 32-38%, Cr 22-28%, Ni 22-28%, W 12-18% and Mn 1-3%.The coating can be applied to a Ni-based high-temperature alloy and a Co-based high-temperature alloy substrate by using a small-spot laser cladding technology, has a special solidification structure of a sub-micron cell structure, has excellent wear resistance and high-temperature oxidation resistance, can be used for surface strengthening of key hot end parts of an aero-engine, and has a wide application prospect.

The application discloses a refractory high-entropy composite alloy coating with excellent interface combination and a preparation method thereof. The high-entropy composite coating is prepared by mixing x% of refractory high-entropy alloy powder WMoTaNb and (100-x)% of 316L powder and then performing laser cladding on a 45# steel substrate to be cladded, so that a high-performance refractory high-entropy composite alloy coating with excellent coating-substrate interface combination and a defect-free cladding layer is prepared, and 100%>x%>30%. The application effectively reduces thermal stress, thereby inhibiting the initiation and expansion of cracks, overcomes the problem that the existing WMoTaNb system refractory high-entropy coating is prone to cracking, and realizes the preparation of the high-entropy composite coating with excellent interface combination.

This invention discloses a tin-copper-carbon composite anode material for sodium-ion batteries, its preparation method, and its application. Belonging to the field of sodium-ion battery technology, the anode material has at least one of the following characteristics: (1) the anode material is a sphere with a core-shell structure and a size of 200-800 nm; (2) the anode material contains a copper-tin alloy coating layer with a thickness of 2-20 nm; (3) the mass percentage of copper in the anode material is 0.5-50%; (4) the mass percentage of tin in the anode material is 10-95%; (5) the mass percentage of carbon in the anode material is 5-60%, forming a carbon layer with a thickness of 5-50 nm. Compared with the prior art, the anode material of this invention has low battery internal resistance and excellent cycle stability, solving the technical problems of large internal resistance variation and poor cycle stability in sodium-ion battery Sn anode materials.

A press hardened coated steel part consisting of: a hardened steel substrate (1) for hot stamping comprising, a coating layer having a thickness from 25 to 55 µm and comprising successively: an interdiffusion layer 21 in contact with the steel substrate and having a thickness of from 3 to 45 µm, said interdiffusion layer comprising more than 60 wt. % Fe, Si from 0.1 to 11.0 wt. %, Cu from 150 to 3000 wt. ppm, unavoidable impurities up to 1.0 wt.%, the remainder being Al, an alloyed layer (22) comprising Al, Fe, Si, Cu, wherein said alloyed coating layer consists of a binary phase (221) and a ternary phase (222), wherein said binary phase comprises from 35 to 60 wt. % Fe, from 0.1 to 5.0 wt. % Si, unavoidable impurities up to 1.0 wt. %, at least 190 wt. ppm of Cu, the balance being aluminium, and wherein said ternary phase comprises from 20 to 50 wt. % Al, from 6.0 to 20.0 weight % Si, unavoidable impurities up to 1.0 wt. %, at least 100 ppm of Cu, the balance being Fe, and wherein, in the alloyed layer, Cu content in the binary phase is at least 90 ppm more than in the ternary phase.

The utility model discloses a novel anticorrosive steam blower, aims at solving the problem that the existing blower is easy to be corroded when conveying high temperature steam containing chemical components. The blower comprises a body, an air compression cavity is arranged in the body, and a rotor capable of rotating relative to the body is arranged in the cavity. The body and the rotor are both made of stainless steel material, and the surfaces of both are covered with a hastelloy coating. The stainless steel substrate provides good structural strength, and the hastelloy coating has excellent corrosion resistance, which can effectively resist the corrosion of chemical components in high temperature steam. This structural design can comprehensively protect the surfaces of the body and the rotor in contact with the steam, greatly improve the service life of the equipment in the high temperature steam conveying scene containing corrosive components, reduce the maintenance cost, and is suitable for the industrial fields such as chemical industry and energy industry with high requirements on the corrosion resistance of the equipment.

Red rust staining of Al / Zn coated steel strip in “acid rain” or “polluted” environments can be minimised by forming the coating as an Al—Zn—Si—Mg alloy coating with an OT:SDAS ratio greater than a value of 0.5:1, where OT is the overlay thickness on a surface of the strip and SDAS is the measure of the secondary dendrite arm spacing for the Al-rich alpha phase dendrites in the coating. Red rust staining in “acid rain” or “polluted” environments and corrosion at cut edges in marine environments can be minimised in Al—Zn—Si—Mg alloy coatings on steel strip by selection of the composition (principally Mg and Si) and solidification control (principally by cooling rate) and forming Mg2Si phase particles of a particular morphology in interdendritic channels.

This invention discloses a solution-treated and aging-treated anti-cavitation nickel-titanium alloy coating and its preparation method, belonging to the field of laser cladding coating technology. It includes a pure nickel transition layer and a nickel-titanium alloy coating formed by metallurgical bonding on the surface of a stainless steel substrate. The nickel-titanium alloy coating is formed by high-speed laser cladding of nickel-titanium powder onto the surface of the pure nickel transition layer, followed by solution treatment and aging treatment. Through solution treatment, Ni2Ti4O generated in the laser-clad NiTi coating... x Resolution treatment reduces component and microstructure segregation caused by unbalanced solidification during laser cladding, resulting in a homogenized coating microstructure with a single austenitic B2 phase. Then, aging treatment induces the redeposition of finely dispersed Ni2Ti4O3 within the coating. x Ni4Ti3 reduces the amount of O dissolved in the grains, improves its phase transformation behavior, and adjusts it to a suitable phase transformation range, thereby giving it a suitable critical stress for inducing phase transformation and a high resistance to dislocation movement, thus reducing cavitation damage and improving its resistance to cavitation.