127 results about "Nicr alloy" patented technology

The invention belongs to the technical field of semiconductor metal oxide gas sensors, in particular to a sensor based on rGO/α-Fe ₂ o ₃ Acetone sensors of heterostructure composites and methods for their preparation. Preparation of rGO/α-Fe by one-step hydrothermal method ₂ o ₃ Heterostructure composite sensitive materials, using graphene's high specific surface area, gas adsorption capacity, fast carrier transfer rate and good conductivity and its combination with α-Fe ₂ o ₃ The heterojunction formed between them increases the chemical reaction of the detected gas and forms the charge transfer between the two, thus effectively improving the sensitivity of the sensor to acetone. In addition, the sensor structure used in the present invention is a commercially available Al with 2 ring-shaped gold electrodes ₂ o ₃ Insulating ceramic tube, coated with ring-shaped gold electrodes and Al ₂ o ₃ Semiconductor-sensitive materials on insulating ceramic tubes, and through Al ₂ o ₃ Composed of Nichrome heating coils in insulated ceramic tubes. The device is simple in process, small in size and suitable for mass production, so it has broad application prospects in detecting the content of acetone in the microenvironment.

The low radiation coated glass capable of being toughened includes one glass base plate and successively arranged the first isolating metal film of NiCr alloy, an antireflecting film of Si3N4 or Si3N4 plus TiO2, an infrared blocking film of metal Ag, the second isolating metal film of NiCr alloy, and a protecting film of Si3N4, SnO2 plus Si3N4 or TiO2 plus Si3N4. The coated glass may be toughened or heat treated while maintaining its high performance, and has excellent heat isolating performance and high antioxidant performance.

The invention discloses an aluminum oxide base metal ceramic nozzle material and a preparation method thereof. The ceramic nozzle material is prepared by taking alpha-Al2O3 ceramic as a base, adding Cr3C2 and NiCr as reinforced toughening phases and performing mechanical alloying, microwave presintering and hot pressed sintering. The ceramic nozzle material comprises the following components in percentage by volume: 5-30% of Cr3C2-NiCr and 70-95% of alpha-Al2O3, wherein the Cr3C2-NiCr is mixed powder of Cr3C2 powder and NiCr alloy powder; in the mixed powder, the mass percent of the NiCr alloy powder is 15-25%; and in the NiCr alloy powder, the mass percent of Ni is 33-50%. By combining mechanical alloying and microwave presintering, the prepared nozzle material has fine property and favorable applicability; the raw materials are cheap, accessible and abundant in reserves; and the preparation process is reliable in principle and simple to operate, and has broad market prospects.

The invention discloses a plating solution for electroplating a tungsten-cobalt-nickel alloy on a surface of structural steel. The plating solution is composed of 12-18 g/L of cobalt sulfate, 80-84 g/L of sodium tungstate, 14-18 g/L of nickel sulfate, 34-38 g/L of boric acid, 30-36 g/L of sodium sulfate, 20-24 g/L of ammonium sulfate, 30-34 g/L of tartaric acid, 11-15 g/L of potassium pyrophosphate, 10-14 g/L of ascorbic acid, 1-3 ml/L of formaldehyde, 2-4 ml/L of dimethyl hexynol, and the balance being water.

The invention relates to high transmittance toughenable low radiation glass and a manufacture method thereof. The high transmittance toughenable low radiation glass comprises a glass substrate of transparent or colored float glass, and is characterized in that: a bottom dielectric layer with a film system structure of Si3N4/ZnSnOx/ZnO:Al or ZnSnOx/ZnO:Al is arranged above the glass substrate; an infrared reflecting layer of metallic Ag is arranged above the bottom dielectric layer; a metal barrier layer of NiCr alloy is arranged above the infrared reflecting layer; an upper dielectric layer with a film system structure of ZnSnSbOx/Si3N4 is arranged above the metal barrier layer. The beneficial effects of the invention are as follows: since composite dielectric layers are employed for the glass provided in the invention and all the film layers are reasonably arranged, the obtained glass can undergo toughening or heat treatment, and the treated glass can retain original properties and has high visible light transmittance and a low hemisphere radiant ratio; a single sheet of the toughened coated glass has visible light transmittance of 85% and a hemisphere radiant ratio below 0.10, and is extensively applicable to the field of architectural glass.

The present invention provides a copper-nickel alloy electroplating bath which is characterized by containing (a) a copper salt and a nickel salt, (b) a metal complexing agent, (c) a plurality of conductivity-imparting salts that are different from each other, (d) a compound that is selected from the group consisting of disulfide compounds, sulfur-containing amino acids and salts of these compounds, (e) a compound that is selected from the group consisting of sulfonic acid compounds, sulfimide compounds, sulfamic acid compounds, sulfone amides and salts of these compounds, and (f) a reaction product of a glycidyl ether and a polyhydric alcohol. This copper-nickel alloy electroplating bath is also characterized by having a pH of 3-8.

The invention discloses a ceramic glue spreader for paper packaging. The ceramic glue spreader comprises a steel roller arranged on the middle part of the ceramic glue spreader, nichrome priming coatof 0.15 mm is sprayed on the surface of the steel roller to protect an iron core from long-term corrosion by glue, a ceramic coating of 0.3-0.4 mm is sprayed on the outer layer of the nichrome primingcoat, a non-contact and pressureless laser engraving process is used on the ceramic coating to carry out net pattern carving on the ceramic surface, according to the difference of the viscosity of the glue, a Teflon anti-stick coating is sprayed on the surface of the ceramic coating, and the ceramic glue spreader is prepared. The roller surface accuracy, circular runout and roundness of the laserengraved ceramic glue spreader can finally reach within 0.005 mm, the glue spreading gap can be controlled within 0.05 mm, glue loss is reduced by about 20%, the spreading amount of the glue is moreeconomical, only a shorter drying time is required, energy consumption and carbon emission are reduced, the service life of the ceramic glue spreader can reach more than 6 times that of a chrome plated glue spreader, and meanwhile, environmental pressure caused by hard chromium electroplating is not caused.

The invention discloses a method for manufacturing a prestress steel strand coated with nichrome powder. The method for manufacturing the prestress steel strand coated with the nichrome powder comprises the following steps that (1) the nichrome powder comprises, by weight, 0.5-3.2% of Re, 48-54% of Ni, 18-32% of Cr, 1.6-5.5% of Si, 0.3-0.8% of S, 0.5-2.2% of C, 10-16% of Fe, 1.2-10% of Mn, and 1-2.5% of composite rear earth; (2) a plurality of wire rod steel wires are fed into a heating furnace; (3) the nichrome powder is evenly sprayed on the surfaces of the wire rod steel wires through a spray gun; (4) the wire rod steel wires are stranded through a stranding machine to form the steel strand which is of a steel wire rope shape; (5) the steel strand enters a quenching device; (6) the nichrome powder is evenly sprayed on the surface of the steel strand again through the spray gun; (7) the steel strand enters a layer winder to be packaged. According to the method for manufacturing the prestress steel strand coated with the nichrome powder, the strength, wear resistance and corrosion resistance of the steel strand are improved.

The invention discloses a high-temperature-corrosion-resistant alloy coating of a boiler heating surface and a preparation method of the high-temperature-corrosion-resistant alloy coating of the boiler heating surface. The high-temperature-corrosion-resistant alloy coating comprises a NiCrAlY alloy priming coating and an Incone1625/NiCr alloy finishing coating. The preparation method of the high-temperature-corrosion-resistant alloy coating comprises the steps that (1) Incone1625 alloy powder and NiCr alloy powder are evenly mixed according to a ratio, and spherical composite alloy powder is prepared and dried and stands for use; (2) the surface of a matrix is cleaned and roughened; (3) the surface of the matrix is coated with NiCrAlY alloy powder through a thermal spraying technology, so that the priming layer is formed; (4) the priming layer is coated with the spherical composite alloy powder through the thermal spraying technology, so that the finishing layer is formed; and (5) cooling is conducted, and then the high-temperature-corrosion-resistant alloy coating is obtained. The high-temperature-corrosion-resistant alloy coating prepared through the preparation method has the advantages of being low in porosity, uniform and dense in surface and good in high-temperature corrosion resistance, achieving that all the layers are tightly combined and the like, the service life of the boiler can be prolonged, and cost can be reduced.

The invention discloses an offline low-emissivity glass coated film system. According to the invention, an original metal Ti layer or a NiCr alloy is replaced with a nitrogen zinc oxide film layer in an existing offline low-emissivity glass coated film system. The nitrogen zinc oxide film layer is prepared by a magnetron sputtering method; nitrogen acts as a sputtering gas and a technological gas in the magnetron sputtering film coating process, and meanwhile, trace oxygen is introduced according to the practical product performance. Relatively low visible light reflectance is kept as well as the sun shading coefficient is low. The offline low-emissivity glass coated film system is gentle in color, can meet the neutral color requirement easily, is low in angle color deviation, and is excellent in abrasion resistance and outstanding in processing property, the finished product rate of the system is effectively improved, and the production cost is lowered.

The invention relates to a preparation method of an electrical heating alloy, and particularly relates to a preparation method of an NiCrAl foam metal. The preparation method comprises the following steps of: preparing a foam NiCr alloy by adopting a sintering process; aluminizing by adopting a powder embedding method on the basis of the foam NiCr alloy to form the NiCrAl foam metal, wherein a penetrating agent comprises nickel-aluminum alloy powder, Al2O3 powder and NH4Cl. The preparation method disclosed by the invention overcomes the defects of the traditional electrical heating alloy; and the produced NiCrAl foam metal has excellent oxidation resistance and resistivity.

A tin-copper-nickel alloy electroplating solution and an electroplating method thereof are disclosed. The electroplating solution comprises 80-150 g/L of stannous sulfate, 60-100 g/L of organic copper sulfonate, 40-80 g/L of nickel sulfate, 10-20 g/L of hydroxy carboxylic acid, 0.5-15 g/L of an antioxidant, 20-35 g/L of a complexing agent, 1-5 g/L of a stabilizing agent and 1-5 g/L of a brightener, with the balance being deionized water. The electroplating solution is simple in composition, low in cost, high in stability, low in toxicity, safe and environmental friendly. A plating layer prepared by electroplating is free of crystal whisker, good in thermal stability, good in malleability, high in processability and not liable to crack.

The invention discloses a high-strength aluminum alloy profile and a manufacturing technique thereof and relates to the field of aluminum alloy materials. The high-strength aluminum alloy profile is composed of, by mass, 3%-5% of magnesium, 1%-4% of silicon, 2%-4% of iron, 0.5%-1% of copper, 1.3%-1.8% of manganese, 0.1%-0.5% of strontium, 0.5%-0.8% of zirconium, 0.5%-0.8% of titanium, 2%-9% of nichrome and the balance aluminum. The invention further discloses the manufacturing technique of the high-strength aluminum alloy profile. The manufacturing technique comprises the three main steps of material preparation, smelting, and homogenization treatment and extrusion forming. Compared with a traditional technique, the manufacturing technique is simple, technical requirements can be met easily, and the strength of the manufactured aluminum alloy profile is improved; meanwhile, the properties such as the corrosion resistance and the weather fastness are improved, and thus the service life of the aluminum alloy profile in a complicated environment is prolonged.

The invention discloses novel aluminium and zinc corrosion resistance nichrome and a furnace roller manufacturing method by adopting the nichrome. The novel aluminium and zinc corrosion resistance nichrome comprises the following chemical constituents in weight percent: 0.1% to 0.2% of C, 1% to 1.2% of Si, 0.8% to 1.2% of Mn, 22% to 23% of Cr, 10.5% to 12.5% of Ni, smaller than or equal to 0.03% of P, smaller than or equal to 0.02% of S, 0.4% to 0.5% of Nb, 0.8% to 1.2% of Mo, 8.5% to 10.5% of W, 0.08% to 0.12% of Re, and the balance of Fe. The nichrome is long in service life, the procurement cost of a manufacturer using sink rolls can be reduced, and frequent replacement can be avoided at the same time, besides, the labor intensity is lowered, and the production efficiency is improved; the furnace roller is manufactured in a centrifugal casting method, under the action of a centrifugal force, tungsten alloy of a centrifugal cast sink roll is distributed in a grading manner from the inside out in content, and the surface layer is rich in tungsten, so that the surface rigidity, the wearing resistance and the corrosion resistance of the furnace roller can be improved.

The invention discloses a spraying material for a heating surface of a boiler tube of a garbage incinerator and a construction process thereof. The spraying material for the heating surface of the boiler tube of the garbage incinerator is an alloy material, with resistance to corrosion and resistance to scouring, designed for analysis of corrosion components of garbage. The alloy material is prepared by adding Mo and W hard phase elements based on a NiCr alloy base material. The NiCrMoW alloy is coated on the tube wall of the boiler tube by way of high speed electric arc spraying. In this way,the NiCrMoW alloy with high hardness and high resistance to corrosion can be sprayed to the heating surface of the boiler tube, the porosity of a coating is not greater than 1.5%, and the coating hasrelatively high stability.

The invention discloses a cesium releasing agent for realizing low-temperature controlled release of cesium and a manufacturing method of a releaser used for the cesium releasing agent, belonging to the field of cesium releasing agents for third-generation low-light level night vision devices and releasers used for the cesium releasing agents. The cesium releasing agent comprises a cesium salt and a reducing agent, wherein the cesium salt is cesium chromate or cesium tungstate, and the reducing agent is a modified ZrVFe getter. The releaser is produced by processing an NiCr alloy pipe, a Cs steam escape outlet is formed through laser boring in the pipe, the middle part of the pipe is filled with the cesium releasing agent and is subjected to press molding, and meanwhile two ends of the pipe are clamped to be flat so as to be used as heating electrodes. If being put into a low-light level night vision device, the manufacturedreleaser is found to have the cesium releasing temperature of 300-500 DEG C and the cesium releasing frequency of 300-400 times and to be freeof releasing harmful impurity gases and controllable in release rate and release amount; and the steam escape outlet of the releaser is reasonably designed, and the evaporation uniformity of Cs on a photoelectric cathode is good, so that the performance of the photoelectric cathode with negative electron affinity (NEA) is remarkably improved.

The invention provides a rose gold low-emissivity coated glass and a preparing method and application thereof. The rose gold low-emissivity coated glass comprises a glass substrate and a functional film layer deposited on the surface of the glass substrate. The functional film layer at least comprises a first dielectric layer, a second dielectric layer, a core dielectric layer, a protection layer and a third dielectric layer which are sequentially deposited outwards from the glass substrate layer by layer. The first dielectric layer is a silicon oxide film layer, the second dielectric layer is a zinc oxide film layer, the core dielectric layer is a copper film layer, the protection layer is a nichrome film layer, and the third dielectric layer is a silicon oxide film layer. Float glass serves as the glass substrate. The rose gold low-emissivity coated glass is capable of achieving the effects of rose gold low emissivity and low in reflectivity, generates no light pollution and is suitable for industrial production and application in multiple fields, the oxidation resistance is remarkably improved, and the storage life can be prolonged.

The invention discloses a sink roll multicomponent alloy coating and a preparing and spraying method thereof, and belongs to the technical field of sink roll repair. The sink roll multicomponent alloy coating sequentially comprises a sink roll base layer, a transition layer and a work layer from inside to outside, the transition layer is a NiCrAlY spraying layer, NiCrAlY is sprayed to the sink roll base layer to serve as a metal bonding layer, that is the transition layer, and the problem of mismatching of material heat expansion coefficients between a wear-resisting heat-resisting work layer and the sink roll base layer can be solved; the work layer is the NiCr-Cr3C2 composite coating, the NiCr alloy has the excellent heat resistance, corrosion resistance, high-temperature oxidation resistance and other properties, Cr3C2 has the good high-temperature hardness and high-temperature oxidation resistance, the hard phase effect is achieved, the coating is not soluble in zinc liquid and is not wetted, coating peeling and even failures caused by heat impact can be greatly reduced, and the technical problems are solved.

The invention relates to an electrostatic capacity type touch screen panel and a method for fabricating the same. The electrostatic capacity type touch screen panel comprises substrates with screen regions and passive regions; transparent electrode pattern parts formed by patterned transparent conducting layers in the screen regions of at least one side surfaces of the substrates respectively; external electrode lines patterned on the passive regions of at least one side surfaces of the substrates respectively, electrically connected with the transparent electrode pattern parts correspondingly, and provided with first to third metal layers which are stacked on the corresponding transparent conducting layers and made of NiCr alloy, conductive metal containing Cu, and NiCr alloy respectively. According to the touch screen panel and the method, the fabricating cost of a touch screen can be reduced effectively and the fabricating procedures for the touch screen panel can be greatly decreased. In addition, through a patterning technique of double-face exposure/etching, the precise alignment tolerance between the first and second transparent electrode pattern parts, between the first and second transparent electrode pattern parts and the first and second external electrode lines, and between the first and second external electrode lines can be maintained.