45 results about "Fluoboric acid" patented technology

The invention discloses a negative electrode modification method for magnesium metal negative electrode surface morphology modification and application, and belongs to the technical field of rechargeable metal battery materials. The invention aims to solve the technical problems of nonuniform magnesium ion deposition, dendritic crystal growth and short cycle life of a magnesium metal battery in the prior art, and provides a negative electrode modification method for modifying the surface morphology of a magnesium metal negative electrode. According to the technical scheme, the negative electrode modification method for modifying the surface morphology of the magnesium metal negative electrode comprises the following steps: (1) removing an oxide layer from the magnesium metal negative electrode to obtain treated magnesium metal; (2) dissolving ammonium fluoroborate in water to obtain an ammonium fluoroborate solution; and (3) reacting the treated magnesium metal obtained in the step (1) with the ammonium fluoborate solution obtained in the step (2) to obtain the modified magnesium metal negative electrode with the modified surface appearance.

The invention discloses a surface strengthening treatment method for an inner hole of a main connecting rod of a piston type aero-engine. The surface strengthening treatment method comprises the following steps that S100, the main connecting rod is subjected to oil removal treatment; s200, performing waxing treatment on the non-plated surface on the main connecting rod to form an insulating protection layer; s300, weak corrosion activation treatment is conducted on an inner hole of the main connecting rod; s400, a tool clamp is used for installing and hanging the main connecting rod, then a lead and tin plating solution is poured into an inner hole of the main connecting rod for out-groove electroplating treatment, and the lead and tin plating solution comprises 110 g / L to 275 g / L of lead fluoroborate, 30 g / L to 65 g / L of stannous fluoroborate, 1 g / L to 2 g / L of hydroquinone and 1.5 g / L to 2.0 g / L of oxhide gelatin; and S500, the main connecting rod is detached from the tool clamp and then subjected to wax removal and cleaning treatment, and then whether the lead-tin layer is qualified or not is checked. According to the surface strengthening treatment method for the inner hole of the main connecting rod of the piston type aero-engine, the uniformity of a plating layer can be improved, the tin content in a lead-tin layer is increased, and the wear-resisting and lubricating capacity is enhanced.

The invention relates to a potassium fluoborate preparation method, which comprises: a, dissolving a certain amount of potassium salt in deionized water, stirring until complete dissolution, and adding a boron-10 complex into a hydrolysis solution according to a certain ratio to achieve complex hydrolysis; b, continuously adding a certain amount of deionized water into the solution obtained in the step a, heating to a certain temperature, and reacting for a certain time; c, cooling the solution to a certain temperature, and then filtering to obtain wet potassium fluoroborate 10; and step d, dispersing the wet potassium fluoroborate 10 into a certain amount of ultrapure water, and filtering and drying the wet potassium fluoroborate 10 to obtain the high-purity potassium fluoroborate 10. According to the invention, direct preparation of potassium fluoboron-10 is realized, the step of firstly converting potassium fluoboron-10 into boric acid in the traditional process is omitted, the process steps are optimized, the reaction time is shortened, the reaction process is reduced, and the utilization rate of boron-10 is increased.

The application relates to the technical field of grain refiners, and discloses a preparation method of an Al-Ti-B grain refiner, which comprises the following steps: S1, adding fluoroborate and fluorotitanate into aluminum liquid, carrying out alloying treatment, removing slag, and obtaining aluminum melt; during the alloying treatment, TiB2 and TiAl3 are generated, and the first mechanical vibration treatment is adopted to refine and disperse the TiB2 and TiAl3; S2, after the aluminum melt is refined and degassed, the second mechanical vibration treatment is carried out, slag is removed, and continuous casting is carried out to obtain the Al-Ti-B grain refiner; the second mechanical vibration treatment is used for forming a TiAl3-coated TiB2 structure of the TiB2 and TiAl3 refined and dispersed after the first mechanical vibration treatment. The first mechanical vibration and the second mechanical vibration are used in combination, so that the refining capacity of the Al-Ti-B grain refiner can be effectively improved.

Disclosed is a preparation method using a microreactor, of a vegetable oil polyol comprising mixing an epoxy vegetable oil, such as epoxy soybean oil, and an acid catalyst, such as fluoboric acid, int

The invention relates to the technical field of blanket processing, in particular to a production process of a tinned copper wire, which comprises the following steps: S1, removing oil by using an alkaline degreaser sodium hydroxide of 40 g / L, sodium carbonate of 30 g / L and lauryl sodium sulfate of 5 g / L, and carrying out ultrasonic cleaning for 5 minutes at the temperature of 60 DEG C, and S2, pickling by using a dilute sulfuric acid solution of 10%, and soaking for 2 minutes at normal temperature until the surface of the copper wire is bright yellow. The quality of a plating layer is remarkably improved, a methanesulfonate system plating solution (Sn 20-40 g / L and methanesulfonic acid 80-120 mL / L) is adopted to replace a traditional fluoroborate system, the plating solution is environmentally friendly, free of toxicity and high in stability, a special brightener is added, the current density (3-8 A / dm), the temperature (25-35 DEG C) and the linear speed (10-30 m / min) are controlled, it is ensured that the plating layer is fine in crystallization and uniform in brightness, tin whiskers or pores are avoided, and the plating layer quality is improved. A silane coupling agent (KH-550) is used for passivation (the concentration is 2%), a compact silicon oxide protective film is formed, the corrosion resistance is improved, the service life of the product is prolonged, and pretreatment is efficient and accurate.

The invention discloses a low-cost high-purity potassium fluoborate preparation method based on ammonium fluoride, and belongs to the field of inorganic salt chemical industry, the method comprises the following steps: S1, reacting by-product ammonium fluoride with the purity of more than or equal to 99% with boric acid to synthesize an ammonium fluoborate solution; s2, at 60-80 DEG C, precisely dropwise adding a potassium chloride solution into the ammonium fluoborate solution at a rate of 1-2 mL / (min.L), and carrying out a replacement reaction; s3, performing crystallization and purification by adopting a two-stage gradient cooling program from fast to slow; s4, a low-temperature saturated potassium fluoborate solution and absolute ethyl alcohol are sequentially adopted for targeted washing, and impurities such as chloride ions are effectively removed; and S5, performing vacuum drying to obtain a product. According to the method, the phosphorus fertilizer industrial byproduct ammonium fluoride is originally adopted to replace expensive hydrogen fluoride or fluoboric acid, so that the raw material cost is reduced by 90% or above; meanwhile, impurity inclusion is effectively inhibited, the problem of impurity introduction caused by byproduct raw materials is solved, and the electronic-grade high-purity potassium fluoborate with the main content larger than or equal to 99.95% and the chloride ion smaller than or equal to 10 ppm can be stably prepared.

The application belongs to the technical field of lithium ion batteries, and discloses a synergistic surface modification method of Li2NiO2 and NCM positive electrodes, a positive electrode tab and application thereof. Specifically, fluoroborate is added into anhydrous ethanol to obtain a mixed solution; NCM and Li2NiO2 are added, filtered, and dried to obtain a composite lithium supplement positive electrode material; the composite lithium supplement positive electrode material, carbon nanotubes and polyvinylidene fluoride are uniformly dispersed in an N-methylpyrrolidone solution to obtain a positive electrode slurry; and the positive electrode slurry is coated on the surface of an aluminum foil to obtain a positive electrode tab. The synergistic surface modification strategy is adopted to simultaneously construct a LiF-NaF-LiBO2 multifunctional composite coating on the surfaces of Li2NiO2 and NCM, thereby improving the resistance of the two to CO2 and H2O, improving the air stability, improving the ionic conductivity, improving the interface contact of the two, and thereby improving the compatibility of the two.

The present application provides a solid electrolyte containing an electrolyte solution containing a lithium salt and a carbonate-based solvent, and metal oxide particles. In the solid electrolyte, the lithium salt is at least one selected from lithium bis(fluorosulfonyl)imide and lithium fluoroborate, the carbonate-based solvent is at least one selected from dimethyl carbonate and propylene carbonate, the molar ratio of the lithium salt to the carbonate-based solvent (lithium salt / carbonate-based solvent) is 1 / 4 or more and 1 / 1 or less, the mass ratio of the electrolyte solution to the metal oxide particles (electrolyte solution / metal oxide particles) is 72 / 28 or more and 93 / 7 or less, and the specific surface area of the metal oxide particles, measured based on the BET method, is 160 m 2 / g or more and 700 m 2 / g or less.

The invention belongs to the technical field of oil exploitation, and particularly relates to a composite blocking remover and a preparation method and application thereof. The composite blocking remover comprises the following components in percentage by weight, comprising the following components in percentage by weight: 5 to 8 percent of hydrochloric acid, 1 to 3 percent of fluoboric acid, 0.5 to 2 percent of acetic acid, 0.5 to 1 percent of dodecyl trimethyl ammonium chloride, 0.1 to 0.3 percent of potassium chloride, 0.3 to 0.8 percent of sodium erythorbate, 0.2 to 0.5 percent of tetrasodium glutamate diacetate, 1 to 2 percent of ethylenediamine tetraacetic acid, 0.1 to 0.2 percent of inositol hexaphosphate, 0.1 to 0.2 percent of cocoanut fatty acid diethanolamide, 0.3 to 0.5 percent of sodium dodecyl benzene sulfonate, 0.3 to 0.5 percent of dimethyl diallyl ammonium chloride, 0.1 to 0.2 percent of ethylene glycol monobutyl ether and the balance of water. The composite blocking remover provided by the invention does not generate the problem of secondary precipitation, slows down the reaction speed of acid rocks, effectively pushes a blocking removal measure solution into the deep part of a stratum, enlarges the blocking removal radius, realizes deep treatment of the stratum, improves the acidification effect, and prolongs the effective action time of acidification.

The invention relates to the technical field of soldering flux, and particularly discloses a water-soluble normal-temperature solidification type soldering flux for an aluminum soldering tin wire and a preparation method of the soldering flux. The invention relates to a water-soluble normal-temperature solidification type soldering flux for an aluminum soldering tin wire. The soldering flux comprises the following components in parts by mass: 16-24 parts of polyethylene glycol; 16 to 24 parts of fluoboric acid; 15 to 31 parts of tri-n-octylamine; 14 to 26 parts of tetramethylethylenediamine; 8 to 12 parts of water-soluble zinc salt; 2 to 8 parts of water-soluble stannous salt; 0.4 to 1 part of a surfactant; and 0.6-2 parts of a slow release agent. The water-soluble soldering flux has the advantages that the water-soluble soldering flux which is in a solid state at normal temperature can better improve the welding strength, and the residual color after welding is relatively light.

This invention discloses a method for preparing WIC superconducting wire inlay welding of aluminum channel wires, belonging to the field of superconducting wire processing technology. The method includes: mixing deionized water and anhydrous ethanol, stirring, and heating to obtain a first mixture; slowly adding preheated polyethylene glycol PEG-400, xanthan gum, and weighed sodium benzoate sequentially to the first mixture to obtain a second mixture; slowly adding weighed stannous fluoroborate and succinic acid sequentially to the second mixture, and then cooling to room temperature to obtain a special flux for aluminum channel wire inlay welding; selecting the workpiece to be inlaid and welded; setting the welding temperature and stretching speed; and completing the inlay welding preparation using the special flux for aluminum channel wire inlay welding under argon protection. This application improves the continuous stability and forming effect of aluminum channel wire WIC superconducting wire inlay welding preparation by designing and preparing a special flux with specific components and combining it with argon protection technology.

A scale-up preparation method for 4-(dimethoxymethyl-4-piperidine)phenylboronic acid pinacol ester, relating to the technical field of pharmaceutical intermediates. The method comprises: using 4-piperidinecarboxaldehyde as a raw material to react with a sulfite and protecting an aldehyde group to obtain intermediate A; then performing a coupling reaction with potassium 4-boronic acid pinacol ester phenyltrifluoroborate to generate intermediate B; then performing deprotection on the intermediate B in the presence of an inorganic base to obtain intermediate C; and finally reacting the intermediate C in the presence of trimethyl orthoformate to obtain 4-(dimethoxymethyl-4-piperidine)phenylboronic acid pinacol ester. The method significantly reduces reaction steps, reduces raw material costs, has a simple and reliable process, is suitable for industrial production, and provides a new reaction route for product synthesis.

This invention provides a method for refining the surface grains of a coating, and a zinc-aluminum-magnesium coated steel sheet, belonging to the field of coating. The method includes: hot-dip galvanizing a steel substrate to obtain a coated steel sheet; cooling the coated steel sheet to a set temperature; and applying a grain refiner to at least a portion of the surface of the coating, wherein the set temperature is 390℃~420℃, and the grain refiner includes potassium fluorotitanate and a mixed salt of potassium fluorotitanate and potassium fluoroborate. By spraying a grain refiner that increases the supercooling of the coating surface, the coating surface is promoted to solidify first, thereby refining the grain structure of the coating. By controlling the temperature at which the grain refiner is sprayed onto the coating surface and the equivalent diameter of the grain refiner, the resulting coating surface has a fine eutectic structure with good atmospheric corrosion resistance and good resistance to under-film filamentary corrosion, making it less prone to under-film filamentary corrosion problems in the atmosphere.

The invention discloses a SiGe / Si selective etching solution with low Ge content and a preparation method and application thereof, and the SiGe / Si selective etching solution comprises the following raw materials by volume percent: 50-98 vol% of hydrochloric acid, 1-50 vol% of nitric acid, 0.01-5 vol% of a fluorine source, and the balance of water; the fluorine source is one or more of hydrofluoric acid, ammonium fluoride, fluosilicic acid, fluoboric acid, ammonium bifluoride and hexafluorophosphoric acid. The preparation method comprises the following steps: mixing hydrochloric acid and nitric acid to react, standing to obtain an orange red solution, then adding a fluorine source and water to obtain the etching solution, and uniformly mixing the etching solution with water before etching for use. According to the method, the etching selection ratio and the etching rate are improved, the etching rate of the SiGe material is controlled, and the method is suitable for SiGe (lt; 20%), and has a wide application prospect.

The invention relates to the technical field of synthesis of pharmaceutical compounds, and particularly discloses a preparation method of 1-(4-fluoro-3-pyridyl) ethanone. According to the preparation method provided by the invention, 4-aminopyridine is taken as a starting material and reacts with fluoboric acid and sodium nitrite, fluorine is firstly applied to a pyridine ring to obtain 4-fluoropyridine hydrochloride, and then the 4-fluoropyridine hydrochloride reacts with lithium diisopropylamide and N-methoxy-N-methylacetamide to obtain 1-(4-fluoro-3-pyridyl) ethanone. According to the preparation method provided by the invention, the raw materials are cheap and easy to obtain, the operation in the preparation process is simple, and the yield is high.

The invention belongs to the technical field of wet-process phosphoric acid, and particularly relates to a method for breaking a fluorine-aluminum complex and recovering aluminum and magnesium by introducing a boron source. The method comprises the following steps: introducing a boron source into a fluorine-containing aluminum complex solution, and reacting to break the fluorine-containing aluminum complex so as to obtain a reaction solution; wherein the molar ratio of the fluorine element in the fluorine-containing aluminum complex solution to the boron element in the boron source is 12: 1-3: 8; adding ammonium sulfate A into the reaction liquid, and crystallizing to obtain ammonium aluminum sulfate crystals and ammonium aluminum sulfate crystal removal mother liquor; adding ammonium sulfate B into the ammonium aluminum sulfate removal crystallization mother liquor, and crystallizing to obtain ammonium magnesium sulfate crystals and ammonium magnesium sulfate removal crystallization mother liquor; and adding a potassium source into the ammonium magnesium sulfate removal crystallization mother liquor, uniformly mixing, and carrying out precipitation reaction to obtain potassium fluoborate precipitate. According to the method, the problem that a fluorine-aluminum complex hinders recycling of aluminum crystals is solved, recycling of the strip liquor can be achieved, meanwhile, aluminum and magnesium elements are recycled respectively, fluorine elements are recycled, and the purity of recycled aluminum, magnesium and fluorine products is high.

The invention relates to the technical field of electrochemical energy storage, in particular to an acid-free tin ion electrolyte and application thereof. The acid-free tin ion electrolyte is characterized by comprising divalent tin salt, a solvent and an organic cosolvent, the divalent tin salt is tin methanesulfonate and / or tin fluoborate, and the organic cosolvent is triethyl phosphate and / or trimethyl phosphate. The cosolvent is added into the electrolyte, so that the electrolyte has the advantages of simple components and low cost. Organic cosolvent molecules reduce the water activity, so that hydrogen evolution and corrosion can be effectively inhibited. The organic cosolvent molecules and the tin salt cooperatively regulate and control the solvation structure of tin ions, so that the electrolyte effectively prevents oxidation and hydrolysis of divalent tin ions and keeps chemical stability under the condition of not additionally adding acid, tin deposition grains can be refined, the growth direction of deposited metal tin can be regulated and controlled, compact tin deposition is realized, the surface capacity of the battery is improved, and the service life of the battery is prolonged. Therefore, the tin electrode can stably operate under high current density.

The invention provides a method for preparing an MXene material from fluoborate and application, and belongs to the technical field of new materials, the chemical expression of the MXene material is Mn + 1XnTx, M is a transition metal element, X is carbon, nitrogen or carbon and nitrogen elements, T is surface end groups including-O,-OH,-F,-N and the like, and n is a natural number between 1 and 4. The preparation method comprises the following steps: mixing and grinding a precursor MAX phase and fluoroborate according to a molar ratio of 1: 2-1: 10; raising the temperature to 250-800 DEG C under the protection of inert gas, and carrying out heat preservation and etching for 2-7 hours; dispersing the etching product in 1-4 mol L <-1 > acid or alkali solution, stirring and washing; and centrifugally washing until the pH is close to 7, and then freeze-drying. The MXene material is obtained, non-metallic element doping of the MXene material is achieved, the preparation method is simple and rapid, and the MXene material has excellent cycle stability when being used as a lithium ion energy storage negative electrode material.

The invention relates to the technical field of oil and gas field development, in particular to a gas storage strong production and strong injection well unblocking and augmented injection method which comprises the nine steps of unblocking liquid preparation, unblocking liquid injection, liquid nitrogen pump injection, shaft gas injection and the like. According to the invention, hydrochloric acid, hydrofluoric acid and fluoboric acid are used as a main body acid system for a plug removal liquid system, and liquid nitrogen is used for replacing a displacing liquid for conventional acidification plug removal operation; after plug removal preparation work is ready, starting an acidification pump truck, sequentially injecting prepared plug removal liquid and active water spacer fluid into a shaft, switching liquid nitrogen to a pump injection process, starting a liquid nitrogen truck set, pumping liquid nitrogen with the volume twice that of the shaft, and squeezing the plug removal liquid and the active water spacer fluid into a stratum. The plugging removal liquid used in the method has high pertinence, liquid nitrogen with good expansion performance is used as displacement liquid, so that the corrosion dispersion performance is good, the use amount of acid liquid is reduced, accordingly, water-sensitive and water-blocking damage of the plugging removal liquid to stratums is reduced, the operation time efficiency is improved, and economical efficiency is considered.

The invention discloses a method for recovering potassium fluoride from glass panel etching wastewater. The method comprises the steps of extraction, reverse extraction, filtration, evaporation and the like, and an extraction agent is prepared from dioctyl phosphate, Cyanex923, trioctylamine and tributyl phosphate according to the volume ratio of (0.6-0.8): (0.3-0.5): (2-3): 0.5. According to the method, extraction conditions are specifically adjusted, specifically, the pH of the wastewater is adjusted to 2.5-3.5 in advance, meanwhile, a specially-prepared composite extraction agent is used, the fluorine ion extraction rate is increased to 99% or above, meanwhile, interference of co-existing ions such as Al < 3 + > and NO3 <-> is inhibited, impurities entering a crystallization link are reduced, and the yield of fluorine ions is increased. The problem that fluorine residues exceed the standard due to interference of coexisting ions in a traditional calcium salt precipitation method is effectively solved, directional precipitation of potassium fluoborate and high-yield and high-purity recovery of potassium fluoride are achieved, and the technical bottleneck of recycling of glass panel etching wastewater is broken through.

The application provides an electrolyte and a lithium metal battery, and relates to the technical field of lithium metal batteries.The electrolyte comprises a lithium salt and an ether solvent; the lithium salt comprises a sulfoximine lithium salt and a fluoroboric acid lithium salt in a molar ratio of 1: (0.1-0.5); the ether solvent comprises a linear ether solvent and a chlorinated linear ether solvent; the linear ether solvent comprises at least one of 1,2-dimethoxypropane, 1,3-dimethoxypropane, 1,2-diethoxyethane and 1-methoxy-2-ethoxyethane; and the chlorinated linear ether solvent is a compound with formula (I): (I); wherein R1 is selected from C1-C4 chlorinated alkyl, and R2 is selected from C1-C4 alkyl and C1-C4 chlorinated alkyl. The application solves the problem that the interface stability of the electrolyte in the prior art lithium metal battery is insufficient, and the capacity retention rate in a long-period cycle process is poor and the coulombic efficiency of a lithium-copper half battery is low.

This invention discloses a method for preparing a defluorinating agent and a method for treating fluoroboric acid-containing wastewater. The preparation method of the defluorinating agent involves: mixing and dissolving aluminum salt, iron salt, and rare earth metal salt solutions to obtain a mixed metal salt solution; slowly adding sodium carbonate solution dropwise to the mixed metal salt solution to adjust the solution to acidity; reacting with stirring to obtain a ternary metal salt solution; mixing the ternary metal salt solution with a *Ulva lactuca* polysaccharide solution; adjusting the solution to weak alkalinity; and reacting under heating conditions to obtain the defluorinating agent. The method for treating fluoroboric acid-containing wastewater involves: adjusting the pH of the wastewater to weak alkalinity; adding the aforementioned defluorinating agent; reacting to decompose fluoroboric acid and simultaneously removing fluoride ions; then adding a flocculant for flocculation; and allowing the solution to settle. The alkaline defluorinating agent of this invention can make the defluorination reaction tank neutral to slightly alkaline, allowing fluoroboric acid to be further decomposed into boric acid and fluoride ions, resulting in sufficient degradation of fluoroboric acid. This invention can deeply remove fluoride and fluoroboric acid that is difficult to remove through coagulation and sedimentation from wastewater.

A grain refiner for brass and a preparation method and use method thereof, the refiner is processed by the following raw materials, and the mass percentage of each raw material is: 40-60% potassium fluoborate, 2-10% potassium fluotitanate, 5-10% potassium fluoride, 5-15% aluminum, 20-30% boron-iron alloy, 2-5% nano carbon powder, 1-5% potassium chloride, 2-5% manganese powder, and the rest is inevitable impurities. The preparation steps are: drying the raw materials in a 105-150 DEG C oven, and grinding / mechanically crushing the corresponding powder / block to the required particle size, stamping aluminum into an aluminum shell with one end sealed; according to the raw material ratio, the ingredients are mixed, and the powder mixing degree reaches more than 95%; quantitatively weighing, filling in the aluminum shell, and sealing the tail package. The preparation process of the present application is simple and easy to operate, the grain refiner has good refining effect, the average grain size is reduced from the common 0.02-0.03 mm level to 0.005-0.01 mm level, and after the organization is refined, the brass ingot can form fine and uniform crystalline structure, which is beneficial to reduce the defects such as cracks, shrinkage holes and cold shuts on the surface of the casting.

The invention discloses an aluminum slot wire WIC superconducting wire embedding and welding preparation method, and relates to the technical field of superconducting wire processing, and the method comprises the following steps: mixing deionized water and absolute ethyl alcohol, stirring, and heating to obtain a first mixed solution; sequentially and slowly adding preheated polyethylene glycol PEG-400, xanthan gum and weighed sodium benzoate into the first mixed solution to obtain a second mixed solution; the weighed stannous fluoroborate and succinic acid are sequentially and slowly added into the second mixed solution, then cooling is conducted to the room temperature, and the soldering flux special for aluminum groove wire embedding welding is obtained; selecting a to-be-embedded and welded workpiece; and the welding temperature and the stretching speed are set, and the soldering flux special for aluminum groove line inlaying welding is adopted to complete inlaying welding preparation under the argon protection condition. By designing and preparing the special soldering flux for embedding and welding the aluminum slot wire with specific components and combining an argon protection technology, the continuous stability and the forming effect of embedding and welding preparation of the aluminum slot wire WIC superconducting wire are improved.

The invention discloses a high-Cu or high-Zn aluminum alloy anode coating technology. The technology comprises the following steps that (1) a high-Cu aluminum alloy 2A14 or a high-Cu aluminum alloy 2219 or a high-Zn aluminum alloy 7021 is subjected to processing and sample preparation, and a test sample is obtained; (2) grinding the test sample obtained in the step (1) by using abrasive paper with different specifications; (3) carrying out polishing treatment on the test sample subjected to grinding treatment in the step (2); (4) pouring a fluoboric acid aqueous solution with the volume concentration of 2%-4% into anode film coating equipment as an electrolyte, immersing the test sample polished in the step (3) into the electrolyte, connecting the test sample with an anode of the anode film coating equipment, and completing film coating under a constant film coating voltage; and (5) taking out the test sample subjected to the anode coating treatment in the step (4) from the anode coating equipment, then washing the test sample with clear water, then spraying alcohol on the surface of the test sample, and blow-drying the test sample.

The invention relates to the technical field of energy storage, in particular to an electrolyte and a liquid injection mode thereof and a lithium metal battery, the electrolyte comprises a first electrolyte and a second electrolyte, and the first electrolyte comprises a leveling agent; the second electrolyte comprises a stress relieving agent; the leveling agent is prepared from tetraethyl ammonium tetrafluoroborate, tetraethyl ammonium hexafluorophosphate, imidazolyl quaternary ammonium salt, tetraphenyl imidazolyl quaternary ammonium salt, 1-benzyl-3-methylimidazole chlorine salt, 1-decyl imidazole chlorine salt, 1-butyl-3-methylimidazole tetrafluoroborate, 1-butyl-3-methylimidazole hexafluorophosphate or polyimidazole quaternary ammonium salt; the stress relieving agent comprises methyl trifluoroacetate, ethyl trifluoroacetate, propylene trifluorocarbonate, 3, 3, 3-trifluoropropene carbonate, tris (2, 2, 2-trifluoroethyl) phosphate, methyl-2, 2, 2-trifluoroethyl carbonate or ethyl-2, 2, 2-trifluoroethyl carbonate, and the stress relieving agent comprises methyl trifluoroacetate, ethyl trifluoroacetate, propylene trifluorocarbonate, 3, 3, 3-trifluoropropene carbonate, tris (2, 2, 2-trifluoroethyl) phosphate, methyl-2, 2, 2-trifluoroethyl carbonate or ethyl-2, 2, 2-trifluoroethyl carbonate. The electrolyte provided by the invention can effectively improve the cycling stability of the battery.

This invention relates to the field of mold release agent technology, specifically to a graphite mold release agent for forging titanium alloy aircraft blades and its preparation method; the graphite mold release agent for forging titanium alloy aircraft blades comprises the following components by mass percentage: 35-40% lower layer reactive lubricating graphite additive combination, 25-30% upper layer sacrificial activated graphite additive combination, 12-15% deionized water, 8-10% anhydrous ethanol, 3-4% sodium polyacrylate, 1-2% polydimethylsiloxane, and 1-2% polyether-modified poly... The invention comprises siloxane, 3-4% organosilicon resin, and 2-3% polyvinyl alcohol. It achieves a dual-layer, time-sequential synergistic design of a lower reactive lubricating layer and an upper sacrificial activation layer. The upper aluminothermic reaction provides energy to trigger the in-situ generation of a graphite-calcium fluoroborate composite superlubricating phase in the lower layer. Combined with the rare-earth cerium oxide surface modification mechanism, it solves the key problems of traditional graphite release agents being easily oxidized at high temperatures and having poor resistance to titanium adhesion. This provides a new high-performance, long-life, and easy-to-clean graphite release agent solution for the precision forging of titanium alloy aerospace blades.

The invention discloses an aluminum-magnesium alloy melt composite purifying agent and an aluminum-magnesium alloy melt refining method. The invention relates to the technical field of aluminum alloy smelting and purification, and aims to solve the problems that in the prior art, the inclusion form is special, the hydrogen content control difficulty is high, and a purifying agent is poor in universality. The aluminum-magnesium alloy melt composite purifying agent comprises the following components in percentage by mass: 36%-44% of titanium-boron-containing composite salt; the titanium-boron-containing composite salt comprises a mixture of potassium fluotitanate and potassium fluoborate; 26%-34% of a multi-element eutectic villiaumite; the multi-element eutectic villiaumite comprises sodium fluoride, aluminum fluoride and calcium fluoride; 20%-30% of a composite gas source generating agent; the composite gas source generating agent comprises potassium sulfate, sodium nitrate and ferric oxide; 4%-10% of a rheological and activating auxiliary agent; the rheological and activating auxiliary agent comprises lithium fluoride and sodium metasilicate; according to the method, deep dehydrogenation can be achieved, MgAl2O4 inclusions are removed, the yield of the magnesium element is high, and the method is green and environmentally friendly.