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43results about How to "Wear-resistant and corrosion-resistant" patented technology

Nanometer graphene reflection thermal insulation composite multifunctional ceramic coating layer and preparation method thereof

The invention discloses a reinforced alloy material; and a surface layer of the alloy material contains such elements as aluminum oxide, silicon dioxide and nanometer graphene. The alloy material is deeply extended on the basis of anodic oxidation, microarc oxidation and multi-component composite oxidation, and is a result under a complex effect of instant high temperature, multi-component composite oxidation liquid and nanometer penetrant through applying positive and negative high voltage, high current and positive and negative pulses by using unique structures, physical and chemical characteristics as ultrahigh hardness and high-temperature resistance, small size effects and surface and interface effects of such nanometer materials as nanometer graphene and nanometer silicon dioxide. The method comprises the steps of: (1) surface cleaning; (2) oxidation; and (3) penetration. The light alloy material after surface reinforcement by the method, in particular a combustion chamber of an internal combustion engine with fuel combustion consumption and generating a pollution source is prominent in reflection thermal insulation anti-carbon self catalysis function, and is higher in high-temperature erosion resistance and wear resistance.
Owner:四川鸿森达铝业科技有限公司

Hot spraying process of metal ceramic coating on surface of valve rod

The invention discloses a hot spraying process of a metal ceramic coating on surface of a valve rod, and relates to the field of manufacture of a valve. The hot spraying process comprises the technical procedures of mechanical pre-processing, surface purifying, surface coarsening, pre-heating treatment, hot spraying, accurately grinding and polishing and the like; a vacuum electric furnace is adopted in the heat treatment; the valve rod is pre-heated to 80-150 DEG C; hypersonic flame hot-spraying is adopted; and a valve rod base body is cooled by a forcible air cooling device when being subjected to hot spraying, and a smooth and compact high-performance metal ceramic coating with wear resistance, corrosion resistance, high binding strength and low porosity is formed on the surface of the valve rod after being polished. The process is high in coating efficiency, free from pollution, high in binding strength of the coating and low in porosity; wear-resisting and corrosion-resisting performances and high-temperature and heat vibration resistance of the surface of the valve rod are greatly improved without changing the precision of the overall size of the valve rod; the usability of the valve rod is greatly improved; the service life of the valve rod can be improved by 2-5 times; and the hot spraying process can be applied to a steam valve of a steam turbine unit, a special valve for a power station and other valves.
Owner:黄红霞

Nickel-titanium system shape memory alloy

InactiveCN104060126AWith memory restoration prototypeNon-magneticNickel titaniumChromium
The invention discloses nickel-titanium system shape memory alloy. The nickel-titanium system shape memory alloy is formed by compounding six metal elements of nickel, titanium, copper, chromium, manganese and cadmium. The nickel-titanium system shape memory alloy comprises, by weight, 60.3%-64.9% of nickel, 21.4%-22.5% of titanium, 7.4%-8.3% of copper, 2.8%-3.7% of chromium, 1.9%-2.7% of manganese and 1.6%-2.5% of cadmium. The nickel-titanium system shape memory alloy is composed of the six metal elements of nickel, titanium, copper, chromium, manganese and cadmium and has the advantages that the memory resilence function is achieved, magnetism does not exist, abrasion, corrosion and high temperature are resisted, and toxicity does not exist.
Owner:ZHANGJIAGANG JIASHENG MACHINERY

Aluminum magnesium alloy material with wear resistance and corrosion resistance, and preparation method thereof

The invention relates to the metal manufacturing, in particular to an aluminum magnesium alloy material with wear resistance and corrosion resistance, and a preparation method thereof. The method comprises the following steps: firstly pouring the aluminum alloy slurry with 10% of solid phase by volume into a preheated die for molding to form an initial rigidification layer, wherein the high-frequency heating and quenching temperature is from 452 to 510 DEG C during the molding; then performing the grain refining process on the initial rigidification layer at the temperature of 500 to 530 DEG C for 4 to 4.5 hours to obtain the final rigidification layer; finally carrying out micro arc oxidation electrolysis water treatment on the rigidification layer to obtain the aluminum magnesium alloy material. The aluminum magnesium alloy material has the properties of wear resistance and corrosion resistance, low preparation cost, and convenient and simple operation for preparation, and can be widely used in the manufacture of parts for high-performing cars.
Owner:蔡乐勤

Abrasion-resistant and anticorrosion pipe or pipe fitting with double ceramic lining layers and preparation method of abrasion-resistant and anticorrosion pipe or pipe fitting

The invention relates to metal pipe or pipe fitting surface abrasion-resistant and anticorrosion protection technologies, in particular to an abrasion-resistant and anticorrosion pipe or pipe fitting with double ceramic lining layers and a preparation method of the abrasion-resistant and anticorrosion pipe or pipe fitting. The pipe or pipe fitting is composed of an abrasion-resistant and anticorrosion lining layer and a metal layer from inside to outside. The abrasion-resistant and anticorrosion lining layer is composed of a surface layer and a composite layer. The surface layer is a compact ceramic layer. The composite layer is a foamed ceramic layer. The composite layer is directly grown on the back face of the compact ceramic layer. The preparation process comprises the following steps of preparation of mixed powder, prilling and slurry preparing, sheet forming through mold pressing and preparation of a foam precursor, bonding, thermosetting forming in a mold, machining and bonding forming, pyrolyzing and sintering, and finished product obtaining through compositing. According to the ceramic lining layer abrasion-resistant and anticorrosion pipe or pipe fitting prepared through the method, the abrasion-resistant service life can be 5-10 times that of rubber lining abrasion-resistant layers, the pipe or pipe fitting has good tolerability to acid and alkali corrosion and high-temperature impact, and the replacement cycle of pipe or pipe fitting equipment can be effectively prolonged, so that the operating cost of enterprises is reduced, and emission of particulate pollutants is reduced.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

TC4 titanium alloy metal powder core flux-cored welding strip and preparation method thereof

The invention discloses a TC4 titanium alloy metal powder core flux-cored welding strip and a preparation method thereof. The invention belongs to the technical field of welding material preparation. The titanium alloy solid welding strip aims at solving the technical problems that components of an existing titanium alloy solid welding strip for titanium alloy strip electrode submerged arc surfacing are not easy to regulate and control, and a surfacing cladding layer is difficult to meet comprehensive performance indexes such as strength, plasticity, toughness, abrasion resistance and corrosion resistance. The welding strip is composed of a Ti-9Mo-3Nb-3V titanium alloy skin and a metal powder core filled in the Ti-9Mo-3Nb-3V titanium alloy skin. The metal powder core is formed by mixing, by mass, 5%-7% of vanadium powder, 12%-17% of aluminum powder, 3%-5% of molybdenum powder, 3%-5% of iron powder, 1%-3% of silicon powder, 5%-8% of nickel powder and the balance titanium powder. By adding beneficial elements and supplementing burning elements in the welding process, the production cost is greatly reduced, the production efficiency is improved, a surfacing cladding layer has the advantages of being high in strength, good in plasticity and toughness and resistant to abrasion and corrosion, welding flux is not needed for molten pool protection and metallurgical regulation, and slag removal treatment is not needed after surfacing.
Owner:HARBIN WELDING INST LTD

Iron-silicon-boron amorphous nanocrystalline composite microsphere material and preparation method thereof

The invention belongs to the technical field of iron-based amorphous nanocrystalline alloys, and particularly discloses an iron-silicon-boron amorphous nanocrystalline composite microsphere material and a preparation method thereof. The selected alloy component is FexSicyBz, wherein x, y and z are atomic percentages of corresponding components, the x is equal to 75-78, the y is equal to 9-12, andthe z is equal to 100-x-y. The drop tube without container rapid solidification preparation method is adopted and comprises the following steps of weighing and preparation, master alloy smelting, sample installing, vacuumizing, heating and blowing, particle collecting, particle screening and the like, and an alloy microsphere with the grain diameter d being less than or equal to 120 microns are screened and collected. The method has the advantages that raw materials are easy to obtain, the amorphous preparation process flow is simple, the amorphous critical dimension is large, the prepared amorphous nanocrystalline composite microsphere material has the advantages of high strength, high hardness, wear resistance, corrosion resistance and the like, and the material can be applied to the fields of amorphous coatings, sensing elements, precision instruments, precision processing technologies and the like.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Pipeline or pipe fitting provided with silicon carbide ceramic abrasion-resisting and corrosion-resisting liner and preparation method thereof

The invention relates to a metal pipeline or pipe fitting surface abrasion-resisting and anticorrosion protection technology, in particular to a pipeline or pipe fitting provided with a silicon carbide ceramic abrasion-resisting and corrosion-resisting liner and a preparation method thereof. The pipeline or the pipe fitting is composed of the abrasion-resisting and corrosion-resisting liner and a metal layer from inside to outside. The abrasion-resisting and corrosion-resisting liner is composed of a surface layer and a compounded layer. The surface layer is a compact ceramic layer. The compounded layer is a foam ceramic layer and directly grows on the back face of the compact ceramic layer. The preparation process comprises the following steps of preparation of mixed powder, preparation of slurry, preparation of a foam precursor in a tape casting mode, bonding, thermocuring forming in a mould, machining, bonding forming, pyrolysis, sintering, and compounding to obtain afinished product. According to the ceramic liner abrasion-resisting and corrosion-resisting pipeline or pipe fitting prepared through the preparation method, the abrasion-resisting service life can be five to ten times that of a rubber-lined abrasion-resisting layer, the resistance to acid and alkaline corrosion and high-temperature impact is excellent, the replacement period of the pipeline or pipe fitting can be effectively prolonged, accordinglythe operation cost of enterprises is lowered, and emission of particulate pollutants is reduced.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Metal-based polymer material, polymer composite material and mold prepared from polymer composite material

The invention belongs to the technical field of composite materials, and particularly relates to a metal-based polymer material which comprises epoxy resin, modified epoxy resin, an epoxy diluent, a dispersing agent, an anti-settling aid, a polymerization aid, a defoaming agent, Ti, iron oxide powder, electrolytic iron powder, reduced iron powder, carbon black, Cr, Mn, Mg, Zn, Wc, Al and ceramic micro powder. The metal-based polymer composite material comprises a metal-based polymer material and a curing agent. The mold is made of a polymer composite material. The prepared mold is high in strength and hardness, small in contractibility and good in sedimentation resistance.
Owner:江苏九铸合金新材料有限公司

Nano graphene reflective heat insulation composite multifunctional ceramic coating and preparation method thereof

The invention discloses a reinforced alloy material; and a surface layer of the alloy material contains such elements as aluminum oxide, silicon dioxide and nanometer graphene. The alloy material is deeply extended on the basis of anodic oxidation, microarc oxidation and multi-component composite oxidation, and is a result under a complex effect of instant high temperature, multi-component composite oxidation liquid and nanometer penetrant through applying positive and negative high voltage, high current and positive and negative pulses by using unique structures, physical and chemical characteristics as ultrahigh hardness and high-temperature resistance, small size effects and surface and interface effects of such nanometer materials as nanometer graphene and nanometer silicon dioxide. The method comprises the steps of: (1) surface cleaning; (2) oxidation; and (3) penetration. The light alloy material after surface reinforcement by the method, in particular a combustion chamber of an internal combustion engine with fuel combustion consumption and generating a pollution source is prominent in reflection thermal insulation anti-carbon self catalysis function, and is higher in high-temperature erosion resistance and wear resistance.
Owner:四川鸿森达铝业科技有限公司
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