1570results about "Superimposed coating process" patented technology

The invention relates to the technical field of rare earth metal electrolysis cathode protection coatings, in particular to a high-temperature-corrosion-resistant yttrium-stabilized zirconia gradient coating on the surface of a tungsten cathode. A metallurgically bonded strong bonding bottom layer is constructed on a tungsten substrate through surface pretreatment and reactive sintering, then an atmosphere plasma technology is adopted to spray a creep-resistant gradient layer with continuous components to buffer thermal stress, and finally a sol-gel technology is utilized to construct an extremely compact corrosion-resistant surface layer in a superposition mode. The high-temperature-corrosion-resistant yttrium-stabilized zirconia gradient coating is constructed through a multi-scale and multi-mechanism synergistic effect, the problems that a tungsten cathode coating is insufficient in binding force and poor in thermal shock resistance are fundamentally solved, molten salt permeation can be blocked, and the service life of a tungsten cathode in a severe environment is remarkably prolonged.

A cutting tool comprising a base material and a coating disposed on the base material, wherein the coating comprises a hard particle layer; the hard particle layer is formed from a plurality of hard particles including titanium, silicon, carbon, and nitrogen; in the hard particles, a concentration of the silicon periodically changes along a first direction set in the hard particles; and an orientation of the hard particle layer is a (311) orientation.

The invention provides a preparation method of a bipolar current collector based on a selective double-sided modified masking film. The preparation method comprises the following steps: depositing a Ni-Cr alloy layer on a single side surface of an aluminum substrate; one side of the masking film is etched to form a roughened surface, and the other side of the masking film is hydrophobic to form a hydrophobic surface; the roughened surface of the masking film and the surface, without the Ni-Cr alloy layer, of the aluminum matrix are pressed, and the edge is coated with curing glue; and placing the pressed and glued sample in an electroplating solution to electroplate a copper layer, finally cutting off an edge glue sealing area, and stripping the masking film. According to the preparation method, the masking film used for protecting the back surface of the aluminum substrate is subjected to double-sided differential treatment, the edge sealing technology is matched, and the Ni-Cr alloy is adopted for bottoming, so that the adhesive force between the copper plating layer and the aluminum substrate is improved, the risk of causing corrosion of a primary battery is reduced, the bipolar current collector which is firmly combined and has a pure interface can be prepared, and the service life of the bipolar current collector is prolonged. And a feasible solution is provided for realizing light-weight and high-performance current collectors for electronic devices such as lithium batteries and the like.

A gas turbine engine component, comprises a densified three-dimensional woven ceramic matrix composite comprising the shape of the gas turbine engine component, the densified three-dimensional woven ceramic matrix composite further comprises a three-dimensional woven structure comprising a densified ceramic matrix disposed on, within and throughout a three-dimensional weave comprising at least one inorganic fiber comprising at least one multilayer coating material structure disposed thereupon, wherein the at least one multilayer coating material structure comprises at least one first interface coating material layer comprising a boron nitride; at least one coating material layer comprising a silicon nitride; at least one second interface coating material layer comprising the boron nitride; and at least one third interface coating material layer comprising a Si3N4-BN multilayer coating having one or more alternating layers comprising at least one layer of silicon nitride at a first thickness; and at least one layer of boron nitride at a second thickness.

A galvannealed steel sheet includes: a cold-rolled steel sheet having a chemical composition containing Si in an amount of 0.1 mass % or more and 3.0 mass % or less; and a galvannealed layer formed on one or both surfaces of the cold-rolled steel sheet. An Fe-based electroplating layer is absent between the galvannealed layer and the cold-rolled steel sheet. In an emission intensity profile, a value of (ISi,Fe) / (ISi,bulk) is 0.90 or less, where (ISi,Fe) denotes an average Si intensity in a range from an interface between the galvannealed layer and the cold-rolled steel sheet to +0.5 μm towards the cold-rolled steel sheet, and (ISi,bulk) denotes an average Si intensity in the cold-rolled steel sheet. An average value of C concentration in a range of 10 μm to 20 μm in a thickness direction from the interface between the galvannealed layer and the cold-rolled steel sheet is 0.10 mass % or less.

The invention provides a gradient nano composite high-entropy alloy coating system with a self-monitoring function and a preparation method, and relates to the technical field of material surface engineering.The system comprises a functional gradient coating module used for achieving gradient dispersion distribution of nano ceramic particles on the curved surface of a shield hob so as to form a gradient nano composite high-entropy alloy coating; the fiber bragg grating sensing module is used for collecting strain data of the shield hob through a fiber bragg grating sensor integrated on the shield hob; the surface thermal image monitoring module is used for collecting temperature data and image data of the surface of the shield hob through an infrared thermal imager; and the self-adaptive repairing module is used for determining repairing parameters of the shield hob and generating a repairing instruction, so that self-adaptive repairing is carried out on the shield hob through preset repairing equipment according to the repairing instruction. According to the invention, the sensor network is successfully integrated in the gradient coating, and integrated fusion of structural health monitoring and protection functions is realized.

The invention relates to the technical field of coating production, in particular to a method for improving the corrosion resistance of a coating through a PVD and ALD composite preparation technology, according to the method, the advantages of PVD and ALD preparation technologies are combined to deposit the coating, ALD intercalation layers are deposited at different positions of the coating prepared through PVD, and therefore the defects generated in the PVD coating deposition process are overcome. And analyzing the section and phase of the deposited coating by utilizing characterization equipment, and detecting electrochemical and corrosive wear properties in a 3.5 wt.% NaCl solution. The PVD coating is subjected to intermediate or surface treatment by adopting an ALD preparation technology, so that the electrochemical performance of the coating is effectively improved.

The invention provides a composite nickel seed layer and a preparation method thereof, a solar cell and a photovoltaic module, and relates to the technical field of solar cells. The composite nickel seed layer comprises a nickel-based alloy layer and a nickel main body layer; wherein the nickel-based alloy layer is a nickel-phosphorus alloy layer or a nickel-boron alloy layer; and a nano nickel crystal nucleus is coated in the nickel-based alloy layer. The composite seed layer structure is used for replacing a seed layer of a single material or structure, and the problems that the resistivity of a nickel seed layer main body material is high, the thickness of a nickel plating layer is not uniform, and the electrical performance and the yield of a battery are poor are solved.

The invention discloses a preparation method of a copper-zirconium alloy wear-resistant coating based on laser cladding, relates to the technical field of wear-resistant coatings, and is used for solving the technical problem that a high-performance wear-resistant coating cannot be prepared due to poor bonding quality and low cladding efficiency of a cladding layer and a copper-zirconium alloy matrix in the existing laser cladding process. The preparation method of the copper-zirconium alloy wear-resistant coating based on laser cladding comprises the following steps: obtaining a copper-zirconium alloy matrix; preparing a CuSn film layer on the surface of the copper-zirconium alloy matrix, wherein the thickness of the CuSn film layer is 0.5-2 microns; preparing an iron-based coating on the surface of the CuSn film layer, wherein the thickness of the iron-based coating is 0.8-1.0 mm; preparing a wear-resistant layer on the surface of the iron-based coating, wherein the thickness of the wear-resistant layer is 1-1.2 mm; the material for preparing the wear-resistant layer is nickel-based alloy composite ceramic powder, and the nickel-based alloy composite ceramic powder comprises nickel-based alloy and ceramic powder.

A cutting tool includes a substrate at least partially coated with a coating. The substrate is a cemented carbide, cermet or ceramic. The coating includes a layer of Ti(C,N), a layer of Al2O3 and there between a bonding layer. The Ti(C,N) layer is composed of columnar grains, wherein an average grain size D422 of the Ti(C,N) layer is 25-50 nm, and wherein the Ti(C,N) layer includes a portion B1 that is adjacent to the bonding layer. An average grain size of the Ti(C,N) grains in portion B1 is larger than the average grain size D422 in the whole Ti(C,N) layer. In the portion B1 of Ti(C,N) layer the Ti(C,N) grains has an average grain size of 140-300 nm.

The invention relates to the field of suspension plasma spraying, in particular to a long-service-life suspension plasma spraying thermal barrier coating based on a platinum-aluminum coating and a preparation method of the long-service-life suspension plasma spraying thermal barrier coating. The preparation method comprises the following steps: preparing a vertical crack or columnar-like structure ceramic layer on the surface of a platinum modified aluminide bonding layer with lower roughness by using suspension slurry prepared from fully-stable tetragonal phase yttrium oxide stabilized zirconium oxide powder and adopting suspension plasma spraying suspension, so as to obtain a thermal barrier coating system with long service life. The problems that in the prior art, due to stress existing between a ceramic layer prepared through plasma spraying and a low-roughness platinum modified aluminide bonding layer, cracks are continuously formed and expanded at an interface, and the service life of a thermal barrier coating system is short are solved. The long-life thermal barrier coating system can be prepared on the platinum modified aluminide bonding layer through suspension plasma spraying.

To deposit nanolaminates on a substrate, the substrate is mounted in a vacuum recipient on a substrate support in a peripheral region of a holder. The recipient comprises a sputter station with a sputtering target and a plasma treatment station with a plasma source, wherein the sputtering target and the plasma source are directed to different sections of the holder. A sputtering gas is introduced into the recipient, a reactive gas is introduced into the sputter station and the plasma treatment station, a magnetron discharge is ignited in the sputter station, and a plasma is ignited in the plasma treatment station. By rotation of the holder, the substrate is successively exposed to the magnetron discharge to deposit a well layer of high refractive index material having a layer thickness between 0.1 nm and 6 nm and to the plasma to produce a layer of low refractive index material.

A method of making a razor blade by forming a cutting edge on a substrate having an outer bonding surface. A first self-assembled monolayer having a non-fluorinated organic material is deposited on the outer bonding surface of the substrate.

The invention discloses a micro-through-hole structure polymer metallization method for guided wave transmission, and belongs to the technical field of photoelectric device processing, a polymer substrate is used for replacing a traditional all-metal material, and the micro-through-hole structure polymer metallization method for guided wave transmission is achieved through the multi-stage processes of plasma activation, chemical coarsening, sensitization, chemical plating, electroplating and the like. And forming a compact and high-adhesion metal layer on the inner surface of the through hole of the polymer substrate. In the process, a microfluid pump or a peristaltic pump is adopted to drive the solution to circularly flow in the through hole and the microcavity. According to the micro-through-hole structure polymer metallization method for guided wave transmission, dynamic flowing of a chemical plating solution in a micro-through hole and an internal cavity is achieved by introducing a micro-fluid pump or a peristaltic pump, and therefore a uniform, compact and firmly-attached metal layer is obtained.

The invention belongs to the technical field of aluminum-silicon-based metal materials, and particularly relates to a high-thermal-conductivity composite metal material and a preparation method and application thereof, and the high-thermal-conductivity composite metal material is suitable for heat dissipation requirements of 5G communication equipment, electric vehicle power batteries, spacecraft thermal control systems and the like. A nanocrystalline aluminum alloy matrix is formed by aluminum, magnesium, silicon, scandium and other metal elements, and the problems of anisotropy, obvious thermal response lag, obvious poor cycling stability, boiling critical phenomenon and the like do not exist; meanwhile, the nanocrystalline aluminum alloy matrix comprises a high-density dislocation grid, so that the overall heat transfer efficiency is further improved; in addition, a micro-channel is formed in the nanocrystalline aluminum alloy matrix, liquid metal is poured into the micro-channel to serve as a phase change working medium, and therefore the synergistic effect of active heat transportation and passive heat conduction is achieved. The catalyst layer is used for promoting evaporation-condensation circulation of liquid metal and strengthening phase change heat transfer of a liquid metal working medium; the interface bonding and wettability are enhanced, and the attachment of liquid metal and the channel wall is improved; and phase change working medium oxidation and side reaction are inhibited.

A process of forming an erosion, oxidation, and wear resistant shot chamber, either a gooseneck or a shot sleeve, is provided. The process utilizes a casting process for forming a one-piece shot chamber having a liner metallurgically bonded to the bulk portion of the shot chamber. Channels of predetermined shape and layout are built on the tubular external surface of the liner for facilitating thermal management of the shot chamber during die casting operations.

The invention discloses a double-ceramic-layer thermal barrier coating of a differentiated columnar crystal structure and a preparation method, and belongs to the technical field of thermal barrier coating corrosion and protection. The invention innovatively discovers and utilizes the double influence of the columnar crystal size on the performance of the coating; the YSZ layer adopts a fine grain structure of 1-1.5 microns, so that the bonding strength and thermal shock resistance of the coating can be obviously improved; and the modified gadolinium zirconate layer adopts a 2-3 [mu] m coarse grain structure, so that the heat conductivity can be reduced, the permeation path of CMAS along a grain boundary can be effectively inhibited, and meanwhile, the modified gadolinium zirconate layer reacts with CMAS to form a compact barrier layer to prevent further permeation of CMAS. Through accurate regulation and control of electron beam physical vapor deposition (EB-PVD) process parameters, differential control of the sizes of the two layers of ceramic columnar crystals is realized, and under the synergistic effect of the two columnar crystal structures with different sizes, the thermal cycle life and CMAS corrosion resistance of the whole coating system in an ultra-high-temperature environment are remarkably prolonged and improved.

The invention discloses preparation and application of a nickel selenide / ferronickel phosphate crystal / amorphous heterogeneous catalyst, and relates to the technical field of electrochemistry. Selenizing the foamed nickel at low temperature in an inert atmosphere to generate a crystalline NiSex layer in situ; and by taking the obtained electrode as a working electrode, carrying out electrodeposition in a deposition solution containing nickel salt, ferric salt, hypophosphite and acetate by adopting a cyclic voltammetry method, so that amorphous NiFePOy is deposited on the surface of NiSex, and a NiSex / NiFePOy crystal / amorphous heterostructure nanosheet layer is constructed and is used for an alkaline medium urea oxidation reaction. The invention has the following beneficial effects: crystalline / amorphous interface coupling and a nanosheet self-supporting structure synergistically improve active sites and charge transfer capability, reduce energy consumption and improve current output; meanwhile, the electrode stability and durability are enhanced; the method has the advantages of low material cost, mild and simple process, suitableness for amplified preparation, and application potential of urea-assisted water electrolysis energy-saving hydrogen production.

A molybdenum silicide layer is formed on a bottom surface in a recessed feature in a silicon or silicon-germanium substrate. The bottom surface may be a silicon or silicon-germanium. A first molybdenum lay er may be deposited on or over the molybdenum silicide layer to fill the recessed feature. In some cases, a second molybdenum layer may be formed on the molybdenum silicide layer. In some cases, the second molybdenum layer may be exposed to nitrogen radicals or nitrogen-containing radicals, forming a molybdenum nitride layer on the second molybdenum layer.

The invention discloses a method for coating a Ca-Cur submicron modified material-doped PLA layer on the surface of an Ag-DCPD film layer, and relates to the technical field of biological coatings on the surfaces of medical materials. The method comprises the following steps: manufacturing an LPBF-NiTi alloy matrix by adopting a laser powder bed melting additive manufacturing technology, and carrying out pretreatment on the LPBF-NiTi alloy matrix; the pretreated LPBF-NiTi alloy matrix is subjected to electrochemical deposition in an electrolyte solution, and the LPBF-NiTi alloy matrix with the deposited Ag-DCPD film layer is obtained; the preparation method comprises the following steps: dissolving CaCl2 and curcumin in absolute ethyl alcohol, putting the solution into a closed container filled with (NH4) 2CO3, and carrying out constant-temperature reaction to obtain a Ca-Cur submicron modified material; polylactic acid is dissolved in dichloromethane, then the Ca-Cur submicron modified material is dispersed in the dichloromethane, and a leaching solution is obtained; and the LPBF-NiTi alloy matrix on which the Ag-DCPD film layer is deposited is subjected to repeated dipping and pulling in the leaching solution, and the LPBF-NiTi alloy matrix coated with the Ag-DCPD / PLA / Ca-Cur composite film layer is obtained. According to the invention, the corrosion resistance, the biocompatibility and the antibacterial and anti-inflammatory performance of the Ag-DCPD film layer are successfully improved.

A thermal ablation-resistant, wear-resistant, and friction-reducing coated piston ring, a preparation method thereof and an engine are provided. An outer circumferential surface of a piston ring material matrix includes, from bottom to top, a wear-resistant and friction-reducing layer and a protective layer, and the protective layer is a single nitride layer or a multi-element nitride layer. The piston ring is arranged with the wear-resistant and friction-reducing layer and the protective layer from bottom to top. When the piston ring is installed in the engine, the high-temperature and high-pressure gas flow impacts the piston ring and contacts the protective layer on the surface of the piston ring, while the inner diamond-like carbon coating (DLC) functional layer is completely “encapsulated” and protected by the outer protective layer. The protective layer possesses higher ablation resistance compared to the DLC layer, effectively preventing phase transformation in the internal DLC layer.

Provided is a surface-treated steel sheet that can be produced without the use of hexavalent chromium and that has excellent adhesion to BPA-free paint. A surface-treated steel sheet having, on at least one surface of a steel sheet, a Ni-containing layer and a coating layer disposed on the Ni-containing layer and containing at least one of Zr oxide and Ti oxide, wherein a contact angle of ethylene glycol is 50° or less, and a total atomic ratio of K, Na, Mg, and Ca adsorbed on a surface of the steel sheet to all elements is 5.0% or less.

The invention relates to a coating for arrangement on a substrate, comprising a matrix layer having a matrix made of an oxide material, characterized in that the matrix layer contains oxide particles which can be distinguished from the matrix made of an oxide material, the oxide particles cannot be identified as droplets formed during cathodic arc evaporation.

The application relates to a copper base and a preparation method thereof and a semiconductor device. The preparation method of the copper base comprises the following steps: preparing an etching termination layer on a copper base material; preparing a copper layer on the etching termination layer; preparing a photosensitive resin layer on the copper layer, locally exposing, developing, forming a first area and a second area on the surface of the copper layer away from the etching termination layer, the first area being covered with the photosensitive resin layer, and the second area being exposed to the surface of the copper layer; etching and removing the copper layer of the second area; and removing the photosensitive resin layer covered by the first area, so as to obtain the copper base comprising a concave cavity and a planar area, and the planar area is arranged at the periphery of the concave cavity. The copper base prepared by the preparation method can effectively improve the flatness of the bottom of the concave cavity, and meet the high-precision requirement of the mounting plane flatness of the third-generation semiconductor power chip.

An apparatus, such as an electronic device, may have a polymer substrate or layer, and a coating on the polymer substrate / layer. The coating may include an interfacial layer and a ceramic multilayer hard coat on the interfacial layer. The interfacial layer may be a non-nitride material, such as an oxide material, that is applied to the polymer substrate / layer. The ceramic multi-layer hard coat may be sputtered onto the interfacial layer and may include alternating nitride layers (e.g., oxynitride layers) with tensile stress and compressive stress. The presence of the interfacial layer may protect the polymer substrate / layer from damage during the sputtering of the ceramic multilayer hard coat.

The present invention relates to a valve arrangement. The present invention further relates to a fluid flow control element. Furthermore, the present invention relates to a turbomachine system comprising such a valve arrangement and / or fluid flow control element. Moreover, the present invention relates to a method and a use relating to the valve arrangement and / or the fluid flow control element.

The purpose of the present invention is to provide a hot-dip Al-Zn-Si-Mg-based steel sheet which has excellent surface appearance and in which the occurrence of wrinkle-like defects is suppressed without any defects such as scum defects. In order to achieve the purpose, the present invention is a hot-dip Al-Zn-Si-Mg-based steel sheet provided with a plating film, the plating film having a composition containing 45-65% by mass of Al, 1.0-3.0% by mass of Si, 1.0-10.0% by mass of Mg, and 0.01-0.5% by mass of Mn, with the remainder comprising Zn and unavoidable impurities, and the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet, the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet, the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet, and the thickness of the plating film being within the range of 50 mm removed from both ends of the steel sheet. The height difference per 1 mm length of the surface of the steel sheet is 10 [mu] m or less.

Disclosed is an electrode sheet calender roll including a hard layer formed by physical vapor deposition and a manufacturing method thereof. The manufacturing method of the electrode sheet calender roll according to one embodiment of the present invention is characterized by including: a hard layer forming step of forming a hard layer on a roll core composed of a steel material containing carbon by a PVD method; and a hard layer forming step of polishing the hard layer so that the thickness of the hard layer is different between a center portion and end portions of the calender roll.

The application discloses a preparation method of a high-wear-resistance railway turnout coating and relates to the technical field of railway turnout coatings. A surface grafted modified nano tungsten carbide reinforcing phase is formed; a nano composite pre-alloy powder is obtained; a spherical high-entropy alloy composite spraying powder with high fluidity is obtained; a rough anchoring surface with a micron-level staggered grid structure is constructed on the surface of a base material; a base coating substrate with a thermal expansion gradient buffer feature is obtained; an initial cladding coating workpiece is obtained; and the high-wear-resistance railway turnout coating is prepared. The application excludes closed pores in the powder, and significantly improves the density and fluidity of the powder.

This invention provides a carbon fiber reinforced polymer (CFRP) composite material that enhances the anchoring effect of the metal layer to the CFRP substrate and improves adhesion. [Solution] The CFRP composite material comprises a base material made of CFRP, a first metal layer laminated on the surface of the base material, and a second metal layer laminated on the surface of the first metal layer. The surface of the base material has carbon fiber cutting grooves formed to a depth in which the carbon fibers in the base material are actually cut, and the first metal penetrates into the grooves and is fixed therein. The manufacturing method includes (1) forming the cutting grooves, (2) laminating the first metal layer by thermal spraying (with penetration into the grooves), and (3) laminating the second metal layer by plating.