89 results about "Corrositex" patented technology

The invention discloses an anti-freezing solution suitable for a hydraulic support and a preparation method of the anti-freezing solution, and belongs to the field of mining mechanical engineering and industrial fluid. The water-based cutting fluid comprises the following raw materials in parts by weight: 25-45 parts of an anti-freezing agent, 1-3 parts of an anti-rust agent, 5-10 parts of a nano-composite lubricant, 2-5 parts of an anticorrosive agent, 1-3 parts of a stable buffer agent, 0.1-0.5 part of an acid-base regulator, 0.5-2 parts of a surfactant, 0.02-0.1 part of an anti-foaming agent and 30-65 parts of softened water. Wherein the nano composite lubricant is composed of molybdenum disulfide nanosheets, boron nitride nanosheets and carboxymethyl chitosan, and the mixing mass ratio of molybdenum disulfide to boron nitride to carboxymethyl chitosan is 1: 1: (3-10). The preparation method comprises the step of uniformly mixing the raw materials at 40-50 DEG C to obtain the anti-freezing solution finished product suitable for the hydraulic support. The anti-freezing solution integrating excellent anti-freezing, lubricating, rust-proof and environment-friendly properties is obtained, and the preparation method is simple and suitable for large-scale production.

The application provides a corrosion agent and method for displaying G20CrNi4 granular bainite structure, the corrosion agent is prepared by 2%-4% nitric acid alcohol solution, hydrochloric acid and ferric chloride in the proportion of 100ml:0.3-0.7ml:0.4g-0.6g; the method for displaying granular bainite structure comprises sample preparation, corrosion agent preparation, granular bainite structure corrosion and metallographic microscope observation. The corrosion agent provided by the application is simple to prepare, the method for displaying granular bainite structure is stable and reliable, simple to operate, and can realize corrosion and clear display of granular bainite structure of carburizing bearing steel.

The invention relates to the technical field of shield engineering materials, and discloses dry-mixed mortar for synchronous grouting of shield construction and a preparation method of the dry-mixed mortar. The dry-mixed mortar is prepared from functional preset phosphogypsum and steel slag co-calcined clinker, carbide slag micro powder, gasification slag micro powder, a pressure-sensitive gel precursor, an ion concentration sensitive latent activator, a heat sensitive self-crosslinking water reducing agent, a pH gradient response type dual anticorrosive agent and the like. The preparation method comprises the following steps: co-calcining phosphogypsum and steel slag under the condition of introducing a sulfur dioxide atmosphere to prepare a core clinker, and uniformly mixing the core clinker with other components. Through cooperation of pressure-sensitive, ion concentration and heat-sensitive multiple response systems, long open time and high-pressure instantaneous condensation of the slurry are realized, and the performance contradiction is solved; the heat-sensitive self-crosslinking water reducing agent forms an interpenetrating network to improve the early strength; and the combination of the functional preset clinker and the anticorrosive agent endows the hardened body with later-stage micro-expansion and self-adaptive corrosion resistance, so that the long-term service performance is improved.

The application belongs to the technical field of glass product manufacturing, and specifically provides high-performance building fireproof glass based on nano-silicon liquid and a preparation method thereof. The fireproof glass comprises two layers of glass and a fireproof material layer arranged in the glass interlayer. The fireproof material layer is prepared from the following raw materials in parts by weight: 20-35 parts of nano-silicon liquid, 10-15 parts of modified polydimethylsiloxane, 8-16 parts of alkaline solution, 4-10 parts of polyol, 3-8 parts of carbonization agent, 2-6 parts of heat-resistant stabilizer, 2-4 parts of cross-linking resin, 1-2 parts of corrosion inhibitor, 0.1-0.4 parts of curing agent, 0.1-0.3 parts of leveling agent, 0.05-0.2 parts of defoaming agent, and 30-50 parts of deionized water. The nano-silicon liquid has a solid content of 30-40%. The fireproof glass has excellent fireproof performance, and has good light transmittance and impact strength.

The invention discloses a high-strength corrosion-resistant plastic bucket and a preparation method thereof, and belongs to the technical field of high-performance plastic buckets, and the preparation method comprises the following steps: preparing coated modified calcium carbonate, reinforced fibers, a corrosion-resistant agent, activated resin and mixed resin, pelletizing, and carrying out injection molding to obtain the high-strength corrosion-resistant plastic bucket. The plastic bucket has excellent and stable mechanical properties through preparation of the coating modified calcium carbonate, pretreatment of the chopped glass fibers and adjustment of the ratio of all the components. The tensile strength is high, the impact resistance is high, common scenes such as falling and collision in logistics transportation can be easily handled, the breakage rate in the transportation process is greatly reduced, and the after-sales loss of enterprises and the use risk of users are reduced; meanwhile, the lifting handle is good in hanging load stability and not prone to deformation even if loaded with heavy objects, the requirement for long-term repeated use in the fields of industry, chemical engineering and the like can be met, the service life of products is prolonged, and user experience is improved.

The invention provides a metallographic detection method for the grain size of an AZO target material, and belongs to the technical field of detection. The AZO target material is ground through coarse grinding, fine grinding and polishing, impurities on the to-be-observed face of the AZO target material can be removed through coarse grinding, meanwhile, the roughness of the AZO target material is preliminarily reduced, the roughness of the to-be-observed face of the AZO target material can be further reduced through fine grinding, the smooth surface can be obtained through polishing, and therefore follow-up corrosion is facilitated; the salpeter solution is used as the acid corrosive agent, so that the grain structure of the AZO target material can be shown, and the AZO target material cannot be damaged; corrosion is carried out at 18-30 DEG C, so that the corrosion rate can be increased; by controlling the corrosion time, grains can be completely displayed, the boundary is clear, a grain boundary image can be clearly and rapidly captured under a metallographic microscope, and then the grain size of the AZO target material can be rapidly measured.

The application discloses a kind of ultra-wear-resistant high molecular sliding materials ZMSM, belong to high polymer composite material and structural bearing technical field;The sliding material is made by ultra-high molecular polyethylene and a variety of functional additives by blending, forming process;The additive includes one or more of glass bead / glass fiber, carbon fiber, graphite, carbon black, coupling agent, stabilizer, lubricant, anti-wear agent, anti-aging agent and anti-chemical corrosion agent;The material of the application has excellent sliding characteristics, high allowable pressure, wide temperature range adaptability, very low friction coefficient and ultra-long service life, especially suitable for high-speed, high-load, wide-temperature-range working conditions under structural bearing, sliding plate, support and other fields.Compared with traditional polytetrafluoroethylene sliding material, the allowable pressure of the material of the application is increased by 2 times, the cumulative sliding displacement life is increased by more than 5 times, the applicable temperature range is expanded to-50°C~+70°C, and the wear rate is significantly reduced under high-speed motion conditions;The application also discloses the preparation process of the material, and the process is simple and easy to industrial production.

The siloxane-based corrosion resistant adhesive is prepared from a reaction mixture such that after curing in the form of a layer, the formed siloxane-based adhesive has a stable modulus and a shear storage modulus at a frequency of 1 Hz of no more than 0.2 MPa as measured by DMA (Dynamic Mechanical Analysis). In addition, the cured siloxane-based adhesive layer is optically transparent, and after lamination to a silver nanowire film, the silver nanowire film has a change in resistance of less than 10% after aging for 500 hours at a relative humidity of 65 DEG C / 90%. The reaction mixture forming the siloxane-based adhesive includes at least one vinyl-functionalized siloxane, at least one hydrogen-functionalized siloxane, at least one hydrosilylation catalyst, at least one siloxane tackifying resin, and at least one anticorrosive agent.

The invention relates to the technical field of cable sheath materials, in particular to a preparation method of an ocean engineering mud-resistant cable sheath material which comprises the following raw materials in parts by weight: 50-80 parts of base resin, 5-15 parts of a wear-resistant reinforcing agent, 10-20 parts of a chemical corrosion-resistant agent, 9-12 parts of a flame retardant and 0.5-1 part of an anti-aging agent, 15-30 parts of ethylene propylene diene monomer; the wear-resistant reinforcing agent is prepared from 15 to 22 parts of carbon fiber and 5 to 10 parts of nano silicon dioxide; the chemical corrosion resistant agent comprises 30-33 parts of barium sulfate and 5-10 parts of organic silicon modified polyester resin; the flame retardant comprises 100 parts of magnesium hydroxide and 15 parts of zinc borate. According to the invention, the high-density polyethylene and the ethylene propylene diene monomer are selected and added as basic resin, so that the slurry resistance required by use in ocean engineering can be effectively improved.

The application discloses an environment-friendly and energy-saving diesel engine clean fuel, and particularly relates to the technical field of clean fuel.The environment-friendly and energy-saving diesel engine clean fuel is prepared from an additive and kerosene in a mass ratio of 1:(300-430).The additive comprises the following raw materials in parts by mass: a cetane improver 40-62 parts, an anti-knock agent 5-10 parts, an anti-corrosion agent 15-30 parts, dimethyl silicone oil 8-10 parts, and a cleaning agent 3-6 parts.The additive is mixed with kerosene, the stability of the fuel is further improved, the utilization rate of the fuel is improved, so that the prepared clean fuel can be effectively combusted in use, and environmental pollutants generated in the combustion process are reduced.

The invention discloses aerospace-grade wide-temperature-range anti-radiation lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease. The perfluoropolyether lubricating oil comprises the following components in parts by weight: 80-85 parts of perfluoropolyether base oil, 12-16 parts of a polytetrafluoroethylene thickening agent, 0.8-1.5 parts of an anti-radiation additive, 1.5-2.5 parts of a nano extreme pressure anti-wear agent and 0.2-0.5 part of an anticorrosive agent. Through innovative design and synergistic effect of a material system, the high-performance lubricating grease which is excellent in three core indexes of wide temperature range, radiation resistance and long service life is successfully developed, the comprehensive technical effect is remarkable, and the blank in the prior art is filled.

The application discloses an anti-stress corrosion material based on an oil slurry steam generator tube plate and a preparation method thereof, and belongs to the technical field of anti-stress corrosion material preparation. The preparation method of the anti-stress corrosion material based on the oil slurry steam generator tube plate comprises the following steps: step one, adding deionized water to a water-based polytetrafluoroethylene resin dispersion liquid, stirring and mixing, then adding a composite high-temperature stabilizer and an anti-stress corrosion agent in sequence, continuing to mix, then adding a surfactant and a coupling agent, stirring, dispersing and treating to obtain a composite coating; step two, cleaning the surface of a Q345R steel plate with ethanol, then performing sand blasting treatment, cleaning and preheating to obtain a pretreated steel plate; step three, loading the composite coating into a spray gun tank, spraying, solidifying, sintering and cooling to obtain the anti-stress corrosion material based on the oil slurry steam generator tube plate. The material prepared by the method has excellent anti-stress corrosion performance and high-temperature stability.

The invention relates to the technical field of power cables, and provides a corrosion-resistant cross-linked polyethylene insulated power cable which comprises a conductor, a cross-linked polyethylene insulating layer, a metal shielding layer, an armor layer and an outer sheath layer from inside to outside. The outer sheath layer comprises the following components in parts by weight: 55-65 parts of polyethylene, 12-18 parts of polyvinyl chloride, 2-4 parts of ethylene-vinyl acetate, 20-24 parts of carbon black, 15-20 parts of a filler, 10-12 parts of a plasticizer, 2-4 parts of a corrosion inhibitor, 2-4 parts of an anti-aging agent, 12-15 parts of magnesium hydroxide, 24-30 parts of aluminum hydroxide and 1-2 parts of dicumyl peroxide; the filler comprises talcum powder, barium carbonate and pretreated magnesium oxide in a mass ratio of 2: 1: (0.6-1.3); the pretreated magnesium oxide is lithium fluoride coated magnesium oxide. Through the technical scheme, the problem of insufficient corrosion resistance of the crosslinked polyethylene insulated power cable in the prior art is solved.

The invention relates to a metallographic sample preparation method of multiplication material ceramic microspheres for a fusion reactor. The metallographic sample preparation method comprises the steps that the multiplication material ceramic microspheres for the fusion reactor are flatly laid at the bottom of a cold inlaying mold; a mixed solution of polyacrylic resin and a curing agent is added into the cold inlaying mold, and the mold is placed at the room temperature to wait for solidification forming; grinding and polishing the molded inlaid sample with the microspheres taken out by using abrasive paper on a grinding and polishing machine, so that the sections of the ceramic microspheres are exposed and smooth; the prepared H2O2 corrosive liquid is heated in a water bath kettle, after the H2O2 corrosive liquid is heated to 60-80 DEG C, the embedded sample is placed in the water bath kettle to be corroded for preset time, and the concentration of the H2O2 corrosive liquid is 10-40%. The preset time is 3-5 min; and taking out, washing with clear water, and coating in an ion sputtering instrument to obtain a sample. According to the method, the H2O2 corrosive agent with proper concentration is adopted, and specific parameters such as heating temperature and corrosion time in the chemical corrosion process are set, so that the problem of clearly observing the grain size of the proliferation material ceramic microspheres under a metallographic microscope is solved.

The invention discloses an imaging method of a copper and copper alloy metallographic structure, and belongs to the technical field of metallographic detection. According to the method, a chromium trichloride-hydrochloric acid solution is used as a corrosive agent, and a corrosion time-standard electrode potential value difference value accurate calculation model is constructed. The method comprises the following steps: firstly, determining the standard corrosion time t of a copper standard metallographic specimen, then calculating the standard electrode potential value difference between a copper or copper alloy metallographic specimen to be corroded and the copper standard metallographic specimen, and accurately solving the optimal corrosion time t of the specimen to be corroded through a corrosion time-standard electrode potential value difference calculation formula. The wiping corrosion method is combined with precise corrosion time control, and the problems that in the prior art, a corrosive agent is poor in universality, the corrosion process is difficult to regulate and control, and a sample is prone to oxidation failure can be effectively solved. The metallographic sample prepared by the method is clear and complete in grain boundary, a passivation protection film is formed on the surface, the oxidation resistance is excellent, the stable development effect can be still kept after long-term placement, and the batch detection process is remarkably simplified.

The invention provides a laser operation method and device adaptive to a low-temperature scene, and the method comprises the steps: stripping residual pumping power under a low-temperature condition through a high-stripping-ratio CPS, and enabling the residual pumping power to be higher than the residual pumping power under a low-temperature condition through the high-stripping-ratio CPS by changing the thickness of a corrosive agent, the corrosion time and the corrosion length. And the packaging length is increased. And calculating the influence of the current application on heat accumulation, determining a threshold current based on a calculation result, and applying the threshold current to the pump source to preheat the pump source. A large amount of cladding light which is not absorbed at a low temperature is stripped through the CPS with a high stripping ratio, a threshold current is provided for the pumping source at the low temperature, the pumping source is pre-heated in advance, and damage to the pumping source caused by thermal shock is prevented.

The invention discloses a corrosive agent for the grain size of quenched and tempered steel, application of the corrosive agent and a display method for the grain size of the quenched and tempered steel, and particularly relates to the technical field of metallographic detection. A corrosive agent for the grain size of quenched and tempered steel is composed of hydrochloric acid with the concentration of 36%-38% and the volume of the hydrochloric acid accounts for 5%-15% of the total volume of the corrosive agent; the concentration of the nitric acid is 65-68%, and the volume of the nitric acid accounts for 1-5% of the total volume of the corrosive agent; the addition amount of the copper chloride is 1-5g per liter of the corrosive agent; the volume of the fatty alcohol-polyoxyethylene ether accounts for 0.5%-2% of the total volume of the corrosive agent; the balance is absolute ethyl alcohol. According to the corrosive provided by the invention, through the synergistic effect of hydrochloric acid, nitric acid, copper chloride and penetrant, the tempered sorbite structure of quenched and tempered steel can be selectively corroded, and particularly, the original austenite grain boundary is preferentially corroded. The method has the advantages of high safety, avoidance of the use of dangerous chemicals, simple and efficient operation, low cost, good corrosion uniformity, stable and reliable result, definite applicability and strong pertinence.

The disclosure provides a chip self-destruction system, a method and a chip, which are applied to the technical field of semiconductors, and the system comprises: a soluble conductive polymer film connected in series to a power supply path of a functional circuit; a microcapsule array arranged opposite to the film and storing a corrosion agent inside; and a control unit comprising a plurality of intrusion detection sensors, which, when the detection result meets a trigger condition, destroy the microcapsule array to release the corrosion agent, break the film, and cut off the power supply path. In view of the problems of the prior art, such as dependence on a battery, explosives, process incompatibility, large trigger delay, high false trigger rate and the like, the technical scheme of the present application does not require an external power supply, realizes zero standby power consumption, is explosion-free and pollution-free, is integrated with a back-end process by using the microcapsule array, is compatible with standard CMOS manufacturing, is quickly triggered by cutting off, can effectively prevent attacks by laser probes and the like, can greatly reduce the false trigger rate, and improves the self-destruction reliability.

This invention discloses an organosilicon carbon fiber protective oil, relating to the field of novel ink technology. The organosilicon carbon fiber protective oil comprises the following components in parts by weight: 80-150 parts base silicone oil, 5-25 parts emulsifier, 3-15 parts rust and corrosion inhibitor, 0.1-10 parts thickener, 0.5-1.5 parts anti-aging agent, and 100-300 parts water. Traditional oils often focus on a single protective function (such as rust prevention or UV resistance), while this invention achieves a "three-in-one" protection of rust prevention, corrosion resistance, and aging resistance through molecular-level synergistic design, forming a dynamic self-healing barrier to resist long-term erosion in complex environments. Existing technologies often suffer from performance degradation due to emulsion stratification or component sedimentation. This invention uses a mild water-based process to construct a uniform emulsion system, which can be stably stored without high temperature and high pressure, significantly lowering the industrialization threshold.

A method for repairing a gas turbine engine component, comprising: providing at least one gas turbine engine component comprising a surface area having a portion comprising an aperture including a first size and corrosion; removing the corrosion from the aperture to form an aperture free of corrosion and comprising a second size; treating the aperture free of corrosion and comprising a second size to form a an aperture free of corrosion; disposing an amount of at least one anti-corrosion agent on the treated aperture free of corrosion to form an anti-corrosion agent-coated treated aperture free of corrosion; and removing at least a portion of the anti-corrosion agent from the anti-corrosion agent-coated treated aperture free of corrosion to form a an aperture free of corrosion comprising the first size and a residual amount of the anti-corrosion agent.

The utility model belongs to the technical field of film testing, and particularly relates to a corrosion testing device for film production, which comprises a base, loading frames are symmetrically mounted on the base, driving mechanisms are arranged on the loading frames, connecting seats are arranged at the tops of the loading frames, and electric push rods are fixedly arranged on the connecting seats. An electronic tension meter is fixedly arranged on the electric push rod, and a pull-up rod is fixedly arranged on the electronic tension meter. The driving mechanism arranged on the loading frame is used for driving the coating roller to rotate, and the coating roller drives the film to rotate together, so that a corrosive agent on the film is more uniformly sprayed, the use state of the film is simulated, the corrosion resistance of the film is better detected, the coating roller drives the film to rotate together, and the corrosion resistance of the film is improved. The corrosion agent is sprayed on the thin film more uniformly, so that the accuracy of corrosion resistance strength test data of the thin film is ensured, and the corrosion resistance strength of the thin film is obtained by spraying and testing the corrosion agent on the thin film.

The invention discloses high-extreme-pressure and corrosion-resistant vehicle gear oil and a preparation method thereof, and belongs to the technical field of engine gear oil. Comprising the following raw materials in parts by weight: 70-90 parts of base oil, 2-8 parts of an extreme pressure anti-wear agent, 1-5 parts of a corrosion inhibitor, 0.5-3 parts of an anti-rust agent, 3-10 parts of a viscosity index improver, 1-5 parts of a purification dispersant, 0.5-3 parts of an antioxidant, 0.1-1 part of a pour point depressant and 0.01-0.5 part of an anti-foaming agent. Wherein the anti-wear reagent at extreme pressure contains S-P-N elements, can react with a metal surface to form a high-strength chemical reaction film, remarkably improves the bearing capacity of the gear oil and reduces abrasion and scratch of a tooth surface, and has a synergistic effect with a benzotriazole derivative in the corrosion inhibitor, so that the problem of corrosion to non-ferrous metals is solved, and the service life is prolonged; the viscosity index improver ensures that the oil product can maintain good fluidity at low temperature, can maintain stable oil film strength at high temperature, and adapts to extreme climate and harsh working conditions.

The invention discloses a preparation method and a formula of a prestressed high-strength concrete well pipe. The prestressed high-strength concrete well pipe is prepared from the following components in parts by weight: low-alkali Portland cement, nano silicon dioxide, blast furnace slag powder, washed river sand, gravel, a polycarboxylate superplasticizer, a corrosion inhibitor and water. According to the preparation method and the formula of the prestressed high-strength concrete well pipe, a formula system is optimized, low-alkali Portland cement is adopted as a base material, nano-silicon dioxide and blast furnace slag powder are compounded to form a synergistic enhancement effect, and nano-silicon dioxide can fill internal pores of concrete and improve the compactness of a microstructure; the blast furnace slag powder improves the gelling strength through a secondary hydration reaction, and is matched with the efficient polycarboxylic acid water reducer to reduce the water-binder ratio, so that the compressive strength of the concrete reaches the grade of C80 and above, and is improved by 33%-60% compared with that of a traditional product; meanwhile, the two-end synchronous tensioning process is adopted to reduce the prestress loss, and the overall bearing capacity of the pipe body is further enhanced.

The application provides a corrosion agent and a method for displaying the as-cast dendritic morphology of high-carbon high-manganese steel, the corrosion agent is prepared from a nitric acid solution, anhydrous ethanol, ferric chloride, cupric chloride and water, the volume ratio of the nitric acid solution, the volume of the anhydrous ethanol, the volume of the water, the mass of the ferric chloride and the mass of the cupric chloride is (8-10) ml:(80-82) ml:(10-20) ml:(2-3) g:(1.5-2.5) g, and the corrosion method comprises the following steps: (1) sample preparation; (2) sample corrosion. The corrosion agent and the method can clearly and effectively etch out the dendritic structure, and can also clearly etch out the austenite grain boundary, so that the dendritic structure and the grain can be observed in the same mirror, the dendritic structure is qualitatively evaluated, the method can be used for the quality evaluation of the as-cast structure of the high-carbon high-manganese steel under the continuous casting process, and thus plays a certain guiding role in the optimization of the continuous casting production process of the high-carbon high-manganese steel and the as-cast quality control.

The invention discloses an electrolytic corrosion agent for a secondary phase in GH4169 alloy and a corrosion method, and belongs to the technical field of chemical etching of metal materials, the electrolytic corrosion agent comprises 2 parts of ethylene glycol, 1 part of hydrofluoric acid, 1 part of nitric acid and 1 part of deionized water; the method comprises the following steps: grinding an alloy cutting sample step by step with abrasive paper, pretreating with polishing paste, and finely polishing; taking the sample as an anode, taking a graphite electrode as a cathode, and constructing an electrolysis system in an electrolytic bath; applying direct-current voltage, and controlling current density corrosion; and S4, after corrosion is finished, washing with deionized water, and blow-drying with hot air. The electrolytic corrosion agent with a specific ratio is designed, the difference is accurately adapted by utilizing the synergistic effect of all the components, hydrofluoric acid selectively etches a secondary phase rich in Nb and Mo, nitric acid strengthens the electrode potential difference between the secondary phase and a matrix by regulating and controlling the oxidation environment, ethylene glycol improves the corrosion uniformity, local over-corrosion is avoided, and the corrosion resistance of the secondary phase is improved. The deionized water balances the conductivity and stability of the system.

This invention belongs to the technical field of metal materials and their coating corrosion inhibitors, specifically relating to a self-assembled monomolecular film host compound, its preparation method, and its corrosion-resistant applications. Firstly, this invention utilizes layered linkage technology to prepare a multifunctional compound containing thiol and amide groups as the main film-forming material, allowing for greater selection of carbon chain length and functional groups, thus achieving multifunctional self-assembled films. Secondly, the selection of the required compounds, solvents, catalysts, and pH adjusters for the self-assembled monomolecular film host compound all contribute to improving the corrosion resistance of metal materials and their coatings. The reaction mixture can be directly used to prepare an aqueous metal protectant system, eliminating the need for lengthy and expensive purification processes after the reaction. Thirdly, compared to general self-assembly technologies, this invention's aqueous self-assembled metal protectant, based on layered linkage technology, prepares a multifunctional compound containing thiol and amide groups as the main film-forming material, forming an aqueous dispersion system on this basis.

The application discloses a metallographic structure display corrosion agent suitable for Cu-containing martensite bearing steel and a display method, and the corrosion agent contains 3-5g of picric acid, 0.9-1.3g of hydrogen peroxide, 1.2-1.8g of hydrofluoric acid, 2.5-4g of nitric acid, 0.5-1g of fatty alcohol polyoxyethylene ether, 0.4-0.8g of fatty alcohol polyoxyethylene ether sodium sulfate and 0.3-0.5g of sodium dodecyl benzene sulfonate in 80-100g of water. According to the characteristics of the Cu-containing bearing steel, the corrosion agent formula is re-designed through experiments, the multi-acid is used in combination with multiple surfactants and oxidants, and the corrosion time can be controlled and the fine crystal phase structure morphology of the tempered martensite and the reversed austenite in the bearing steel can be obviously displayed.

The present application relates to the technical field of automobile products, and particularly relates to a car polishing paste and a preparation method thereof, which comprises the following components in percentage by weight: agglomerated alumina micro powder 10-20%, solvent oil 15-25%, lubricant 1-5%, corrosion agent 2-4%, antifreezing agent 3-6%, pH regulator 0.3-0.8%, emulsifier 2-8%, defoaming agent 0.1-0.3%, bactericidal preservative 0.1-0.2%, dispersant 0.5-1%, thickening agent 0.8-1.5%, and the rest is deionized water; the preparation method comprises the following steps: (1) preparation of agglomerated alumina micro powder; (2) preparation of oil phase; (3) preparation of water phase; (4) preparation of polishing paste; the polishing paste obtained by processing the formula components according to the above preparation method has high grinding force and polishing brightness, is easy to clean, does not hide the polishing traces, and avoids later repair.

The application belongs to the technical field of material detection and analysis, and particularly relates to a cross-section sample preparation method of superfine tungsten alloy wire, which comprises the following steps: fixing the tungsten alloy wire on a substrate made of the same material; then using epoxy resin and glass powder to perform hot embedding on the tungsten alloy wire, obtaining an embedded sample after cooling; then grinding and polishing the embedded sample under a pressure of 50-60 MPa; finally using a corrosion solution prepared from hydrogen peroxide, ammonia water and sodium dodecyl sulfonate to corrode the embedded sample, obtaining a tungsten alloy wire cross-section sample. The application uses a substrate made of the same material to fix the tungsten alloy wire, which is convenient for positioning the cross-section and avoids the occurrence of original cell reaction during corrosion; by accurately controlling key process parameters such as grinding pressure and polishing disc rotating speed, the cross-section micro-crack defects are effectively eliminated; by selecting a suitable type of corrosion agent and a suitable corrosion treatment time, a standardized detection sample meeting the requirements of microscopic analysis such as metallographic microscope and scanning electron microscope is prepared.

The application provides a kind of corrosion-controllable atmosphere modification-heat treatment synergistic GH4169 alloy Laves phase accurate display method, comprising: sample targeted corrosion: after sample is polished, it is immersed in targeted corrosion agent and corroded, sample presents light gray, stop and blow dry when;Controllable atmosphere oxidation interface modification: sample is placed in controllable atmosphere tube furnace, high-purity argon is used as carrier gas in furnace, high-purity oxygen is doped, temperature is raised to 300-350 DEG C and then kept, temperature is reduced to room temperature after keeping, sample is taken out and washed and then blown dry;Ladder type temperature difference differential dyeing: the following processing is carried out in box furnace: temperature is raised to 340 DEG C and kept, temperature is raised to 440 DEG C and kept, temperature is raised to 480 DEG C and kept, temperature is kept, and then temperature is quickly reduced to 200 DEG C and kept, then air cooling to room temperature with furnace, then sample is washed;Microscope observation: magnification observation is carried out using optical microscope, Laves phase, matrix, NbC carbide and other alloy precipitated phase are identified.The application realizes Laves phase display with high phase distinction, strong reproducibility and full-size accurate identification.