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

The invention disclosed a GO-doped environment-friendly passivator, and a preparation method and application of the GO-doped environment-friendly passivator. The GO-doped environment-friendly passivator per liter comprises 10-80 ml of citric acid, 20-80 ml of hydrogen peroxide, 2-5 g of cerous nitrate, 0.01-0.1 g of lauryl sodium sulfate, 0.1-0.5 ml of triethanolamine, 1-5 g of graphene oxide, andthe balance deionized water. The environment-friendly passivator does not contain chromic acid. A passive film with good corrosion resistance, oxidation resistance and stability can be formed on thestainless steel surface by adding a stainless steel workpiece into the passivator of 50-70 DEG C for passivating treatment for 20-50 minutes.

The invention relates to an application of a tantalum-doped uranium film in a black cavity, belonging to the technical field of laser fusion engineering, and particularly relating to an application ofa tantalum-doped uranium film. The invention aims to solve the problem that in the existing uranium black cavity, the gold lining laser-X-ray conversion efficiency is insufficient, and the physicallyexpected non-lining uranium black cavity is poor in chemical stability, and the structure of the black cavity is not stable. The tantalum-doped uranium film is used as a black cavity lining protective layer or is applied to a black cavity as an energy conversion layer. The tantalum-doped uranium film has the advantages of being good in antioxidant corrosion resistance; as the lining protection layer, having the better interface bonding force and chemical compatibility, and higher energy coupling efficiency while protecting the uranium black cavity energy conversion layer; as the energy conversion layer, having the higher laser-X-ray conversion efficiency compared with Au and lower M-band X-ray yield, and being outstanding in chemical stability and structural reliability.

The invention discloses an oxidation-resistant low-temperature-resistant cable. The oxidation-resistant low-temperature-resistant cable comprises an outer protection sleeve, a heat preservation layer,a liquid nitrogen cooling layer, a protection layer, a high-voltage insulation layer and an insulation protection sleeve; the surface of the outer protection sleeve is provided with a model mark; a braided shielding layer is arranged inside the outer protection sleeve, and the heat preservation layer is arranged inside the braided shielding layer; the liquid nitrogen cooling layer is arranged inside the heat preservation layer; the protection layer is arranged in the liquid nitrogen cooling layer; the high-voltage insulation layer is arranged in the protection layer; the insulation protectionsleeve is arranged inside the high-voltage insulation layer; a filling layer is arranged in the high-voltage insulation layer; power lines are installed inside the insulation protection sleeve; and ground wires are arranged in the protection layer. According to the cable, a low-temperature-resistant anti-oxidation structure is prepared by adopting the outer protection sleeve which is prepared from a low-temperature-resistant silicone rubber material, so that the cable has very high anti-oxidation corrosion resistance, high elasticity and scratch resistance, longer service life and higher economic benefit.

The invention discloses a lead-acid storage battery positive electrode for an electric bicycle. The positive electrode consists of the following components in percentage by weight: 1.2 to 1.6 percent of Sn, 0.2 to 0.6 percent of Al, 0.01 to 0.02 percent of Bi, 0.02 to 0.08 percent of Ag, 0.02 to 0.05 percent of In, 0.05 to 0.10 percent of Cu, and the balance of Pb.

The invention discloses a constituent component of an inspection well body, which is formed by integral injection molding and comprises an upper end opening, a lower end opening and a spherical side wall, wherein the spherical side wall is provided with a first reinforcing convex part, a second reinforcing convex part and a reinforcing rib; the upper end opening is provided with a clamping bump and a clamping groove; the first reinforcing convex part is arranged at the inner side of the spherical side wall; the second reinforcing convex part is arranged at the outer side of the spherical side wall and extends from the upper end opening to the middle position of a main body part to form smooth transition; the reinforcing rib is arranged at a concave part of the outer side of the first reinforcing convex part; and the lower end opening is provided with a butt-joint lump and a butt-joint groove. The constituent component of the inspection well body has the following benefits: the height of the inspection well body can be adjusted; the service life of the constituent component of the inspection well body is prolonged; and the universalization is enhanced, the construction is convenient, the airtightness is good, and the oxidation-corrosion resistance is excellent.

The invention discloses a lead-acid storage battery positive electrode for an electric bicycle. The positive electrode consists of the following components in percentage by weight: 1.2 to 1.6 percent of Sn, 0.2 to 0.6 percent of Al, 0.01 to 0.02 percent of Bi, 0.02 to 0.08 percent of Ag, 0.02 to 0.05 percent of In, 0.05 to 0.10 percent of Cu, and the balance of Pb.

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.

A rare earth-copper alloy lightweight glass mold and a preparation method therefor, relating to the field of glass mold materials. The method comprises: putting weighed nickel, silicon, chromium, 50% of copper, and rare earth into a smelting furnace; after melting, stopping the heating of the furnace and adding the remaining copper; after melting, adding a deslagging agent to cover the melt; performing heating and removing the slags; at the same time, adjusting the melt by means of spectral analysis to contain 4.0-9.5% of nickel, 0.5-3.5% of silicon, 0.5-3.5% of chromium, 0.01-0.5% of rare earth, with the balance being copper; pouring the obtained rare earth-copper alloy lightweight glass mold melt into a molding sand wall in which a cold iron core is provided, and removing the cold iron core after the pouring is completed; introducing the obtained rare earth-copper alloy lightweight glass mold into a solution treatment furnace to perform solution treatment; and then, putting into the furnace to perform aging treatment to obtain a finished product. The mold has high thermal conductivity, high tensile strength, high hardness, excellent oxidation resistance and corrosion resistance.

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 provides a method for preparing an anti-uranium-tantalum-oxide film on the metal uranium surface, belongs to the technical field of material surface treatment, and particularly relates to a method for preparing an anti-uranium-tantalum-oxide film for protecting a metal uranium material surface, aiming at solving the problem that a metal uranium material has active chemical property,and is extremely easily oxidized, etched and failed in application. The method comprises the step of preparing an anti-uranium-tantalum-oxide film on the surface of a metal uranium film or metal uranium block from a uranium-tantalum alloy target which serves as a target by adopting direct-current magnetron sputtering; or preparing the anti-uranium-tantalum-oxide film on the surface of a metal uranium film or metal uranium block from a metal uranium target or metal tantalum target which serves as a target by adopting dual magnetron sputtering co-deposition method. The uranium-tantalum film hasexcellent antioxidation performance, has excellent interface bonding force and chemical compatibility with a uranium material. The method is mainly used for preparing an anti-uranium-tantalum-oxide film on the metal uranium surface.

The invention discloses a new type of cleaning powder, which is mainly used for cleaning glass, especially optical glass. Lotion 5-35%, chelating agent 5-35%. It not only solves the problem of poor versatility of the existing formula, but also makes the properties of the cleaning powder more stable, durable and better in effect.

The invention belongs to the field of deformed superalloy materials for aero-engine turbine discs; it relates to a deformed turbine disc alloy material for 850°C and a preparation process; the invention generates carbides in the alloy by adding higher element C, and through control The addition of W and Mo elements avoids the precipitation of TCP phase in the alloy; adding trace rare earth elements to the alloy for composite microalloying, further improving the thermal strength of the alloy, and using pre-melted slag containing rare earth elements for electroslag remelting. The electroslag used for remelting adds trace rare earth elements to ensure the alloy composition; the segregation of the ingot composition is small; the alloy of the present invention uses a small-sized electrode ingot, and at the same time, combined with the triple smelting process, it helps to reduce the alloy composition segregation. The alloy prepared by the invention has the advantages of uniform composition, good high-temperature mechanical properties and the like, and can meet the requirements of high-thrust ratio advanced aero-engines for high-performance deformed alloy turbine disk materials.

The invention relates to an anode alloy material of lead-acid battery of an electric vehicle. The alloy specifically comprises the following components by weight percent: 0.04-0.12 percent of Ca, 0.45-1.0 percent of Sn, 0.02-0.06 percent of Al, 0.01-0.02 percent of Bi, 0.02-0.08 percent of Ag, 0.005-0.02 percent of Cu and the balance of Pb. The invention has the advantages of simple formulation, little resistance ratio, favorable anti-oxidant and corrosion-resisting performance, higher oxygen evolution potential, favorable self-discharging performance, maintenance-free performance, excellent service circulation ability, more stable electrochemistry performance and little water splitting during charging. By adopting the tubular opening lead-acid battery made from the alloy, distilled water is not needed to be added so as to bring great convenience for users; besides, the production cost and the resource waste are reduced.

The invention relates to an application of a tantalum-doped uranium film in a black cavity, belonging to the technical field of laser fusion engineering, and particularly relating to an application ofa tantalum-doped uranium film. The invention aims to solve the problem that in the existing uranium black cavity, the gold lining laser-X-ray conversion efficiency is insufficient, and the physicallyexpected non-lining uranium black cavity is poor in chemical stability, and the structure of the black cavity is not stable. The tantalum-doped uranium film is used as a black cavity lining protective layer or is applied to a black cavity as an energy conversion layer. The tantalum-doped uranium film has the advantages of being good in antioxidant corrosion resistance; as the lining protection layer, having the better interface bonding force and chemical compatibility, and higher energy coupling efficiency while protecting the uranium black cavity energy conversion layer; as the energy conversion layer, having the higher laser-X-ray conversion efficiency compared with Au and lower M-band X-ray yield, and being outstanding in chemical stability and structural reliability.

The invention provides a surface treatment method of a magnesium alloy. The surface treatment method comprises the step of sequentially carrying out degreasing, surface conditioning, formation and drying on a magnesium alloy substrate, wherein the alkalinity of a degreasing powder solution adopted during the degreasing process is 30 mol / L to 50 mol / L; the acidity of a surface conditioning agent solution adopted during the surface conditioning process is 5 mol / L to 10 mol / L; and the pH value of a formation reagent adopted during the formation process is 1.8 to 2.8. Compared with the prior art, the surface treatment method has the advantages that a protective film is formed on the surface of a magnesium alloy workpiece through reasonable control of the technological parameters during the degreasing, surface conditioning and formation process, the magnesium alloy has good oxidation corrosion resistance and weather resistance, and the surface treatment method is simple in technology, low in cost and easy to popularize and achieve.