31results about How to "Good oxidation and corrosion resistance" patented technology

The invention discloses an abrasion-proof and corrosion-resistant nickel-based alloy wire and a preparation method thereof. The alloy wire comprises the following components: 17-21% of C, 20-25% of Co, 1.8-2.2% of W, 6.4-9.5% of Mo, 1.4-1.8% of Al, 3.2-4.5% of Ti, 0.1-0.5% of Nb, 0.1-0.5% of Hf, 1.2-1.8% of Ta, 0.03-0.06% of Re, 0.01-0.05% of Ce, 0.02-0.1% of C, 0.005-0.015% of B, 0.02-0.07% of Zr, 0.005-0.008% of Mg, and the balance Ni. The preparation technology of the alloy comprises the steps of vacuum smelting, remelting, forging, hot rolling, drawing, solid solution treatment and aging treatment, namely, raw materials are prepared and smelted based on mass percent and then smelted; the smelted materials are forged and rolled into obtain alloyed wire rods; the alloyed wire rods are drawn at a plurality of times to obtain phi 0.05-0.4mm alloy wires; finally the alloy wires are subjected to solid solution treatment and aging treatment. The abrasion-proof and corrosion-resistant nickel-based alloy wire can be used as a brush wire material for brush sealing of an aircraft engine, a gas turbine, etc., thus the brush sealing effect can be effectively improved, and the service life can be prolonged.

The invention discloses a titanium carbide-based hard alloy taking a nickel-molybdenum alloy as an adhesive and a preparation method thereof. The titanium carbide-based hard alloy consists of the following raw materials in percentage by mass: 13 to 20 percent of nickel powder, 7 to 10 percent of molybdenum powder and the balance of titanium carbide powder. The preparation method comprises the following steps of: adding the nickel powder, the molybdenum powder and the titanium carbide powder into a ball mill for wet milling, filtering and drying; adding paraffin wax; uniformly mixing, drying and performing compression molding; putting the mixture into a hydrogen atmosphere after molding and preserving heat at the temperature of between 300 and 500 DEG C for 2 to 3 hours; and sintering the mixture under the vacuum degree of 1*10<-2> to 5*10<-2> Pa at the temperature of between 1,400 and 1,450 DEG C so as to obtain a finished product. An alloy material prepared by the method has high hardness, high wear resistance, high corrosion resistance, low consumption of strategic resources, low porosity and high performance price ratio, can be applied to (half) finish machining of low carbon steel continuous cutting and can be taken as a substrate material for a diamond coating cutter.

The invention provides a rose gold plating layer for overcoming the problem that in the prior art, after surface abrasion, the rose gold clad layer is relatively great in chromatic aberration and low in appearance quality. The rose gold plating layer comprises a titanium carbonitride layer and a copper-gold alloy layer positioned on the surface of the titanium carbonitride layer, wherein the chroma system coordinate LAB values of the carbon titanium nitride layer are as follows: the L value is 68-70, the A value is 9-12 and the B value is 15-18; the chroma system coordinate LAB values of the copper-gold alloy layer are as follows: the L value is 84-87, the A value is 9-12, and the B value is 15-18. Meanwhile, the invention further discloses a preparation method for the rose gold plating layer. The chromatic aberration of the titanium carbonitride layer and the copper-gold alloy layer of the rose gold plating layer is small. Even if the copper-gold alloy layer on the surface is abraded, the appearance quality of the rose gold plating layer is not obviously affected.

The invention discloses a preparation method of a high-strength melt-down non-woven fabric. The preparation method of the high-strength melt-down non-woven fabric comprises the following operating steps of (1) uniformly mixing and feeding polybutylene terephthalate, polycarprolactam, sodium molybdate dehydrate, N-octyl diaminoethyl glycine hydrochloride and titanium isopropoxide tristearate into ascrew extruder for melt extrusion to obtain functional masterbatch; (2) melt-down-spinning the functional masterbatch obtained in the step (1) through the screw extruder to obtain the non-woven fabric, wherein, during melt-down spinning, the air pressure is 0.3-0.5 MPa, the receiving distance is 11-15 cm, and the rotating speed of a measuring pump is 66-75 Hz. According to the technical scheme, the preparation method of the high-strength melt-down non-woven fabric is simple and stable in process and high in production efficiency; the prepared high-strength melt-down non-woven fabric is excellent in anti-corrosion and antioxidant property, and particularly high in mechanical property and strength.

The invention discloses a tantalum-containing cast nickel-based high-temperature alloy for a 700 DEG C unit and a preparation method thereof. The alloy comprises the following components in percentage by mass: 0.2-2.0% of Ta, 20-23% of Cr, 11-13% of Co, 8-9% of Mo, 1.2-2.4% of Al + Ti, less than or equal to 1% of Nb, less than or equal to 0.06% of C, less than or equal to 0.004% of B and the balance of Ni. The method comprises the following steps: (1) preparing raw materials according to set components; (2) smelting under a vacuum condition; (3) refining and removing impurities, and then carrying out vacuum pouring; (4) keeping the vacuum condition until the molten steel forms a film, and discharging to prepare a cast ingot; and (5) preserving heat at 1150-1200 DEG C for 1-2 hours, carrying out solution treatment, and carrying out water cooling. According to the invention, the strength of the solid solution is ensured by utilizing the matching of several elements including the Ta element, meanwhile, a more stable precipitated phase is formed, the coarsening of a grain boundary is inhibited, and meanwhile, the optimal chemical component range, the optimal element adding proportion and the optimal heat treatment process system are determined.

The invention provides a shape memory embedded double-layer metal grid conducting film and a preparation method thereof, which belong to the technical field of flexible photoelectrons. The preparationmethod for the shape memory embedded double-layer metal grid conducting film comprises the following steps of: preparing a grid template on the surface of a rigid substrate, depositing a double-layermetal film on the surface of the grid template, removing the grid template to obtain a double-layer metal grid protruding on the surface of the rigid substrate, and coating the surface of the rigid substrate with a shape memory polymer, and after curing, separating the rigid substrate from the double-layer metal grid wrapping the shape memory polymer to obtain the shape memory embedded double-layer metal grid conducting film. Compared with the prior art, the shape memory embedded double-layer metal grid conducting film prepared by the invention has good scratch resistance, bending stability,corrosion resistance, oxidation resistance and shape memory performance.

The invention discloses an NdFeB (neodymium iron boron) surface modified permanent magnetic material and a preparation method thereof. An intermetallic compound of Re2Fe-14B is used as a matrix for the NdFeB surface modified permanent magnetic material, and a permanent magnetic material of a nickel-iron alloy plating layer is electroplated on the surface. The nickel-iron alloy plating layer is formed by two elements of Ni and Fe, wherein the content of Ni is 45-60 percent, and the content of Fe is 40-55 percent; and the preparation method of the nickel-iron alloy plating layer comprises the following steps that an electroplating method is adopted, a sulfate system is taken as electroplating liquid, the matrix of Re2Fe-14B is taken as a cathode, graphite is taken as an anode, and the nickel-iron alloy plating layer is deposited on the cathode to carry out surface modification. By the adoption of the electroplating process, the obtained product is smooth, has no burrs, and is high in precision, and bright in plate surface, the surface uniformity is within 5 percent, and the production cost is low.

The invention discloses an energy-saving and environment-friendly door and window sealing rubber strip and a preparation method thereof and relates to the technical field of energy-saving materials. The sealing rubber strip is prepared from the following raw materials: modified terpene resin, methyl acrylate, powder nitrile butadiene rubber, activated attapulgite clay, composite enhanced fibers, zinc stearate, sodium metasilicate, sodium dodecyl sulfate, diphenyl phosphate, dimethyl sulfoxide, hindered phenol, an anti-radiation agent, a crosslinking agent and a plasticizer. The preparation method of the energy-saving and environment-friendly door and window sealing rubber strip comprises the steps of mixing, extruding the raw materials and the like. The sealing rubber strip disclosed by the invention is simple and convenient to operate and low in production cost, has excellent mechanical strength, fireproof and flame-retarding performance, heat-insulation and sound-blocking performance, and corrosion-resisting and ageing-resisting performance; the sealing rubber strip is widely applied and the utilization performance and the service life are greatly improved.

The invention provides an oxidation-prevention preparation for a carbon product. With water or other solvents for modulation, the oxidation-prevention preparation can be attached to the outer surface of the carbon product and forms an oxidation-prevention thin layer after being dried or sintered, and the oxidation-prevention preparation contains a mixture or a compound of silicon dioxide and aluminum oxide and additionally contains various components capable of improving the physical property of the oxidation-prevention thin layer. The oxidation-prevention preparation comprises a semiconductor metallic oxide improving electric conductivity and a metal oxide having the capability of resisting slag abrasion and can have a substance improving the thermal shock resistance. The oxidation-prevention preparation has good oxidation corrosion resistance, good slag abrasion resistance, very good thermal shock resistance in high-temperature and high-oxygen environments and long in service life.

The invention discloses a Sn-Cu-Ni-Ce-Cr lead-free solder which comprises the following components by weight percent: 0.5-5.0% of Cu, 0.06-1.0% of Cr, 0.01-1.0% of Ce, 0.01-0.15% of Ni and the balance of Sn. Further, the content of the Cr is 0.2-0.7% through optimization. The lead-free solder has the characteristics that the solder splash yield is high relative to a Sn-Cu-Ni-Ce solder, and the solder splash yield is increased by utilizing the properties of the Cr and adjusting the Cr content, so that the lead-free solder with good mechanical properties, good wettability and strong antioxidant ability are obtained, and can be widely applied to the technical field of electronic materials.

The invention relates to a boiler water high-utilization-rate method, which comprises the following steps of: putting a collection basin into the bottom of a high-temperature furnace, adding 3 per thousand to 8 per thousand of anhydrous trisodium phosphate into a high-temperature furnace, heating the high-temperature furnace to 400-500DEG C for processing, taking out the collection basin, cooling and icing collected precipitates, and putting the collection basin back to the bottom of the high-temperature furnace; adding a new material into the high-temperature furnace in proportion, raising the temperature to melt the cooled mixed precipitate, and then reducing the temperature and testing the furnace to produce glass; and raising the temperature in the high-temperature furnace to 450DEG C for processing for 24h. The method further involves a precipitation basket, the collection basin is pushed into the precipitation basket, and then the precipitation basket is placed at the bottom of the high-temperature furnace; the collection basin and the precipitation basket are made of nickel-based alloy; according to the boiler water high-utilization-rate method, a large amount of time and cost are saved, and the production efficiency is remarkably improved.

The invention discloses a manufacturing method for improving the waterproof performance of a rattan chair. The method comprises the following operation steps that 1, after being washed cleanly, rattanis placed in modified liquid and subjected to soaking treatment for 4-5 hours, and then the rattan is taken out and dried until the water content is 8-12%; and 2, the surface of the rattan obtained after drying treatment is brushed with waterproof paint, then the rattan is placed in an oven, and after the drying treatment, the rattan is woven into the rattan chair. The rattan chair manufactured by the adoption of the method is excellent in various mechanical properties, high in strength, and excellent in corrosion resistant and oxidization resistant performance, and especially has excellent waterproof performance.

The invention provides a deformation-resistance material fork and a manufacturing method thereof. By means of the deformation-resistance material fork and the manufacturing method thereof, the deformation resistance of the material fork can be improved, and the service life is prolonged. The deformation-resistance material fork is prepared from, by mass percentage, 0-0.08% of C, 0-1.00% of Si, 0-2.00% of Mn, 0-0.035% of P, 0-0.03% of S, 20% or above of Cr, 12% or above of Ni, 5*C or above of Ti, 0.3-0.60% of Mo, and 0.2-0.4% of Nb.

The invention relates to an alloy formula, in particular to an oxidation-corrosion-resistant nickel-based alloy. The nickel-based alloy is characterized by comprising the following components of, by weight, 34-40% of iron, 1.5-2.5% of manganese, 0.02% of aluminum, 0.02% of titanium and the balance nickel. According to the optimal technical scheme, the nickel-based alloy comprises the following components of, by weight, 36% of iron, 2.0% of manganese, 0.02% of aluminum and 0.02% of titanium and the balance nickel. Thus, the oxidation-corrosion-resistant nickel-based alloy has the advantages ofbeing low in cost, good in oxidation corrosion resistant effect and high in corrosion resistance.

The invention discloses a carbide composite material and a production method and a product thereof, and the production method comprises the following steps: mixing carbon-containing particles and first fibers according to a preset proportion, and dispersing the first fibers in the carbon-containing particles to form mixed powder; the mixed powder is pressed into a preset shape, a prefabricated body is formed, and the volume content of the first fibers in the prefabricated body is larger than 10%; performing pyrolysis treatment on the preform, carbonizing the carbon-containing particles in the preform to form a carbon skeleton with a porous structure, and dispersing the first fibers in the carbon skeleton with the porous structure; the carbon skeleton of the porous structure is filled with an infiltration material, the carbon skeleton of the porous structure is heated, the infiltration material and carbon in the carbon skeleton of the porous structure are subjected to an infiltration reaction to form a carbide composite material, and the first fibers are dispersed in the carbide composite material to toughen the carbide composite material. The carbide composite material prepared by the production method provided by the invention has good high-temperature oxidation resistance and wear resistance, and has bending strength of 140 MPa or above.