7308 results about "Titanium" patented technology

The invention relates to the technical field of titanium anodes, and provides an automatic coating method of a titanium anode and related equipment, and the method comprises the following steps: obtaining a target coating area of the titanium anode, coating, carrying out data acquisition on the target coating area in the coating process to obtain real-time coating data, and calculating coating uniformity and thickness change conditions; evaluating the coating uniformity, and generating a coating quality evaluation result and a coating defect distribution condition; based on the coating quality evaluation result and the coating defect distribution condition, the thickness change condition is analyzed, and thickness optimization parameters are obtained; and generating a feedback atlas according to the thickness optimization parameters, and adjusting coating parameters of the automatic coating equipment based on the feedback atlas. Through application of automatic coating equipment, a sensor array, real-time data acquisition and a coating analysis model, the problems that when uniformity and thickness in the coating process are controlled, the coating quality is unstable, the coating thickness is not uniform, and coating parameters are difficult to monitor and adjust in real time are solved.

The invention provides a titanium-doped high-nickel ternary positive electrode material and a preparation method thereof. The titanium-doped high-nickel ternary positive electrode material comprises a high-nickel ternary positive electrode material and a titanium-doped element, and the content of the titanium-doped element accounts for 0.5-5wt% of the titanium-doped high-nickel ternary positive electrode material. The preparation method comprises the following steps: preparing a nickel-cobalt-manganese hydroxide precursor; uniformly mixing the nickel-cobalt-manganese hydroxide precursor with a lithium source, sintering and cooling to obtain a high-nickel ternary positive electrode material; and mixing and sintering the high-nickel ternary positive electrode material and a reducing titanium source to obtain the titanium-doped high-nickel ternary positive electrode material. Reducing titanium is used for modifying the high-nickel ternary material, more stable Ni < 2 + > is enriched on the surface of the material through an oxidation-reduction reaction to serve as a protective layer, corrosion of electrolyte to the material is reduced, and the surface stability of the material is improved; the titanium element can enter material crystal lattices more easily compared with a common doping method; the lattice structure strength of the material is improved through a relatively strong Ti-O bond, and excellent cycling stability and rate capability are obtained.

The invention discloses an analysis method and system for a dynamic recrystallization structure form of a titanium alloy based on machine learning and a medium, and belongs to the technical field of metal material microstructure quantitative characterization, a Gleeble thermal compression test is processed on a titanium alloy to be tested, multi-modal data is collected, a DRX probability graph is output based on a DRX segmentation model, and then the characteristics of DRX are extracted. And respectively inputting the DRX features into the first-level classifier, carrying out PCA dimension reduction processing, splicing and fusing the prediction probability and the features after dimension reduction, and inputting the spliced and fused features into a second-level classifier to output a two-dimensional DRX segmentation map. Based on the FIB-SEM tomography sequence image, reconstructing a three-dimensional model of the DRX crystal grain so as to carry out consistency verification on the two-dimensional DRX segmentation image; and evaluating a correlation coefficient of the three-dimensional model and the two-dimensional DRX model, and finally carrying out three-dimensional visualization on the space aggregation of the DRX crystal grains. According to the method, the automation degree and efficiency of dynamic recrystallization proportion and type identification are remarkably improved.

The invention discloses a fuse wire additive manufacturing method for regulating and controlling the strength of titanium alloy by adding rare earth oxide, which comprises the following steps of: 1, ultrasonically stirring and mixing rare earth oxide nano powder and ethanol solution to obtain turbid liquid; 2, polishing the surface of the titanium or titanium alloy substrate until the roughness is not greater than Ra1.6; thirdly, the surface of a substrate is evenly coated with the turbid liquid, after drying, fuse wire additive manufacturing of titanium or titanium alloy wires is carried out under inert atmosphere protection, and the titanium alloy with the improved strength is obtained; the fuse wire additive manufacturing process comprises the steps that layer-by-layer deposition is conducted, and after each layer is deposited and completely solidified and cooled, the surface of the deposited layer is coated with turbid liquid and dried. According to the method, coating of the turbid liquid containing the rare earth oxide and the fuse wire additive manufacturing process are combined, the titanium or titanium alloy containing the rare earth oxide and uniform in component is prepared, metallurgical bonding of the rare earth oxide and the titanium or titanium alloy wire is achieved, and the method is suitable for the technical field of metal additive manufacturing.

The invention relates to a preparation method of a low-cost high-quality titanium ingot. The method comprises the following steps that raw materials including 20%-30% of new materials (titanium sponge, aluminum-vanadium intermediate alloy, aluminum shots and aluminum plates) and 70%-80% of recycled materials (TC4 blocky recycled materials and TC4 scrap-shaped recycled materials) are prepared, and the recycled materials are treated; mixing the materials and pressing a titanium alloy lump; material distribution is conducted, specifically, the titanium alloy lumps, the recycled materials and the aluminum plates are evenly stacked in an electron beam cold bed furnace (EB furnace) for drying treatment; eB is smelted to obtain an EB cast ingot; performing end flattening treatment on the EB cast ingot; and the EB cast ingot serves as a consumable electrode and is subjected to secondary smelting in a vacuum consumable electric arc furnace (VAR furnace), and finally the finished TC4 titanium alloy cast ingot with uniform cast ingot components is obtained. The method effectively utilizes the recycled materials, reduces the production cost, improves the ingot casting quality, and is suitable for preparing high-performance titanium alloy materials for aviation, aerospace and the like.

The invention provides a titanium plate performance analysis method and system, and relates to the technical field of metal material detection.The method comprises the steps that an optical scanner is adopted to establish a three-dimensional structure on the surface of a titanium plate, and test areas are divided; synchronously acquiring stress, hardness and conductivity data of a test point by using a multi-probe collaborative detection device; constructing a dual-branch feature extraction network, wherein the dual-branch feature extraction network comprises a surface topography feature branch and a physical feature branch; performing statistical integration on the features in the test area, calculating distribution features and determining a weight coefficient; and generating a performance analysis result through feature fusion and a multi-task output layer, and finally determining the performance grade of the titanium plate. According to the method, deep fusion of morphology information and physical characteristics is realized, and the accuracy and reliability of titanium plate performance evaluation are improved.

The invention discloses a method for preparing titanium alloy flat ingots by the combination of a vacuum consumable skull melting furnace and an electron beam cold hearth furnace. By using a large proportion of TC4 return materials and adopting the combination process of a vacuum consumable skull melting furnace + an electron beam cold hearth furnace, titanium alloy flat ingots with high stability and suitable for direct rolling are prepared. The invention effectively reduces carbon emissions and production costs from the aspects of raw materials and preparation processes, and helps to realize the recycling of titanium resources and the short-process preparation of titanium alloys.

The invention discloses a method for preparing a titanium alloy slab ingot by duplex of a vacuum consumable skull furnace and an electron beam cold bed furnace, and the titanium alloy slab ingot which is high in stability and can be used for direct rolling is prepared by adopting a large-proportion TC4 return scrap through a duplex process of the vacuum consumable skull furnace and the electron beam cold bed furnace. According to the method, carbon emission and production cost are effectively reduced from the aspects of raw materials and the preparation process, and recycling of titanium resources and short-process preparation of the titanium alloy are facilitated.

The invention relates to a copper-molybdenum-titanium etching solution as well as a preparation method and application thereof. The copper-molybdenum-titanium etching solution comprises a main agent, the main agent is prepared from organic acid, a fluorine-containing compound, a surfactant, organic alkali, a corrosion inhibitor, hydrogen peroxide and deionized water. The copper-molybdenum-titanium etching solution provided by the invention does not contain phosphorus, the cost and environmental protection risk in a wastewater treatment link are greatly reduced, and meanwhile, the copper-molybdenum-titanium etching solution contains low fluorine, so that the etching solution has good etching activity, corrosion to equipment is effectively reduced, a powerful guarantee is provided for stable operation of production, and the copper-molybdenum-titanium etching solution is suitable for industrial production. And meanwhile, the safety of an operation environment is improved. Especially, under the condition of low hydrogen peroxide content, the copper-molybdenum-titanium etching solution shows excellent etching performance. In addition, the etching solution also has long copper service life, can effectively inhibit the negative influence of copper ions on the etching performance, prolongs the effective service time of the etching solution in a high copper content state, greatly reduces the replacement frequency of the etching solution, reduces the production cost, and improves the production efficiency.

The invention provides an aluminum alloy material, a preparation method thereof and a cable. The aluminum alloy material is prepared from the following components in percentage by mass: 0.03 percent to 0.06 percent of Si, 0.80 percent to 1.2 percent of Fe, 0.15 percent to 0.25 percent of Cu, 0.005 percent to 0.03 percent of B, 0.001 percent to 0.02 percent of Ti, 0.05 percent to 0.15 percent of Y, 0.08 percent to 0.2 percent of the total mass of La and Ce and the balance of Al. The specific content of Fe is added into the aluminum alloy material and cooperates with the rare earth elements Y, La and Ce, and the elongation at break of the aluminum alloy material is improved; meanwhile, due to the addition amount of the Y element, the fatigue resistance of the material is further improved, the toughness of the material is improved, and the heat resistance and cold resistance of the material can be improved. A specific content of boron element is added to form nuclear particles, so that the effect of refining grains is achieved, and the tensile strength of the aluminum alloy material is improved; and meanwhile, the resistivity of the aluminum alloy material is further reduced through cooperation of the boron element and other components. And the titanium element can also play a role in refining grains, so that the tensile strength of the material is further improved. The cable prepared from the aluminum alloy material can meet the requirement of a cable torsion experiment.

The invention belongs to the technical field of powder metallurgy, and particularly relates to a titanium-based composite workpiece and a preparation method and application thereof. High-entropy alloy powder with fine granularity is preferably selected as reinforcing phase powder after being prepared by adopting a gas atomization method and subjected to vibration screening, the particle size of the reinforcing phase powder and internal crystal grains of particles are fine, and after the reinforcing phase powder and titanium alloy powder are uniformly mixed, hot isostatic pressing low-temperature sintering treatment is performed, so that the high-entropy titanium alloy is obtained. Fine grain structures in reinforced phase powder particles are reserved in the titanium-based composite master alloy bar, and then a secondary plasma rotating electrode method is used for preparing powder, so that the titanium-based composite powder with uniform components and smaller grain structures is obtained; after mixing, the homogenized titanium-based composite mother alloy bar is prepared into powder through a secondary plasma rotating electrode method, chemical components are further dispersed and homogenized, reinforcing phases are distributed in all titanium-based composite powder particles, and the reinforcing effect can be further improved through an unconventional surface contact type reinforcing mode.

The invention relates to the technical field of preparation of iron phosphate materials, in particular to a method for doping iron phosphate with titanium, which comprises the following steps: 1, dissolving a titanium dioxide by-product ferrous sulfate powder in water to prepare a titanium-containing iron source solution; 2, adding water into the reaction kettle, and stirring; 3, adding the titanium-containing iron source solution, the phosphorus source solution, ammonia water and an oxidizing agent into a reaction kettle to prepare primary slurry; 4, carrying out filter pressing on the primary slurry, washing until the conductivity is less than or equal to 2000us / cm, and then adding water to prepare secondary slurry; 5, phosphoric acid is added into the reaction kettle for bottoming, and the temperature is increased to 60-70 DEG C; 6, adding the secondary slurry into the reaction kettle, and carrying out heat preservation reaction on the secondary slurry and phosphoric acid; and 7, filtering the reaction product obtained in the step 6, washing until the conductivity is less than or equal to 500us / cm, and then drying and sintering. According to the method, the titanium doping technological process is simplified, and meanwhile the titanium element utilization rate in the titanium dioxide by-product and the purity of the titanium-doped iron phosphate product are improved.

The invention belongs to the technical field of metal material forming, and relates to a high-strength plastic titanium-based composite material annular part and a preparation method and application thereof. The preparation method comprises the following steps: firstly, uniformly mixing titanium alloy powder and reinforced phase powder, then preparing an annular blank according to the technological process of smelting, plasma rotating electrode atomization, degassing seal welding, hot isostatic pressing and ring rolling, and finally, annealing the annular blank to prepare the target annular part. According to the method, the titanium-based composite material powder is prepared by replacing a traditional laboratory small-batch ball milling method with a large-batch mixing method, a vacuum induction melting rod manufacturing method and a plasma rotating electrode atomization method, a reinforced phase can be introduced into a titanium matrix crystal and uniformly distributed, and the method is suitable for industrial large-batch production requirements; the titanium-based composite material annular part is prepared through the technology of powder metallurgy blank making and thermal deformation, and the effects of shortening the machining period and improving the material utilization rate and the forming rate are achieved through the precise size of powder metallurgy forming and the high efficiency of special-shaped ring rolling.

The invention discloses a hydrogen embrittlement-resistant high-strength titanium alloy and a preparation method thereof. The hydrogen embrittlement-resistant high-strength titanium alloy comprises the following components in percentage by mass: 5.5%-6.5% of aluminum, 3.5%-4.5% of tin, 3.2%-3.8% of zirconium, 0.4%-0.6% of molybdenum, 0.7%-1.2% of tungsten, 0.25%-0.35% of niobium, 0.4%-0.6% of silicon, 0.8%-1.2% of yttrium, 0.03%-0.08% of carbon and the balance of titanium and inevitable impurities. The hydrogen embrittlement-resistant high-strength titanium alloy is prepared through the following steps that after cogging treatment is carried out on a smelted as-cast alloy blank, forging and heat treatment are carried out. The titanium alloy has no hydrogen embrittlement phenomenon after hydrogen charging stretching, the strength and hydrogen embrittlement resistance of the material are both considered, the Rm after hydrogen charging can reach 1180 MPa and is higher than that before hydrogen charging, and the ductility after hydrogen charging can reach 11.3% and is equivalent to that before hydrogen charging.

A steel sheet has a chemical composition including in wt % C: 0.2-0.4%, Mn: 0.8-2.0%, Si: 0.1-0.5%, Al: 0.01-0.1%, Ti: 0.01-0.1%, B: 0.0005-0.005%, P≤0.040%, Ca≤0.01%, S≤0.006%, N≤0.01%. The steel sheet includes from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk. The bulk includes an inclusion population in which the sum of clustering indexes of MnS and TiN / Ti(C,N) inclusions is less than or equal to 300 μm / mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300 MPa and a bending anisotropy equal to or lower than 7°.

The invention relates to the technical field of metal composite materials, in particular to a titanium-aluminum-titanium layered metal composite plate and a machining method and application thereof. The titanium-aluminum-titanium layered metal composite plate comprises a metal composite plate body, wherein the metal composite plate body comprises a first titanium metal layer, an aluminum metal layer and a second titanium metal layer; a first interface transition layer is formed between the first titanium metal layer and the aluminum metal layer, and a second interface transition layer is formed between the second titanium metal layer and the aluminum metal layer; the thickness of the metal composite plate body ranges from 0.05 mm to 0.2 mm. The metal composite plate body is formed by pouring molten aluminum between two solid titanium sheets subjected to thinning treatment, and after solidification, diffusion heat treatment and rolling are sequentially carried out. The thickness can be controlled between 0.05 mm and 0.2 mm, the ultrathin thickness enables the composite board to have light weight, high flexibility and excellent mechanical performance, and the ultra-thin composite board is suitable for the field with strict requirements for weight and size. The metal composite plate not only has high strength and good conductivity, but also has excellent corrosion resistance.

The invention discloses an environment-friendly electrolyte for anodic oxidation of titanium and titanium alloy workpieces and an electrolytic coloring method. The electrolyte comprises 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water. The electrolytic coloring method comprises the steps of pretreatment, anodic oxidation coloring and aftertreatment. The pretreatment comprises alkali washing oil removal, water washing and laser treatment; and an electrolyte mixed by 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water is used for anodic oxidation coloring. The post-treatment comprises sealing treatment and drying. According to the technical scheme, the technical problems that the anodic oxidation coloring technology is completely free of fluorine, low in toxicity and safe to operate, and the oxidation waste liquid is free of pollution and easy to treat can be solved, existing pretreatment steps can be simplified, and meanwhile uniform coloring is achieved.

The invention discloses a component gradient iridium tantalum coating anode and a preparation method thereof, the component gradient iridium tantalum coating anode comprises a titanium-based bottom layer, a middle layer and a surface active layer structure with component gradient, and the middle layer and the active layer are both prepared through a thermal decomposition method. And the intermediate layer is prepared on the titanium substrate and is composed of TiO2 / Ta2O5 mixed oxide. The surface active layer is prepared on the outer side of the middle layer and comprises a plurality of layers of IrO2 / Ta2O5 oxide coatings with different iridium-tantalum proportions. Compared with a traditional uniform coating anode, the prepared component gradient iridium tantalum coating anode can relieve the stress concentration phenomenon and reduce coating cracking, the service life of the anode is remarkably prolonged, and the catalytic activity of the anode is remarkably improved; the modified carbon nano tube is added into the active layer precursor solution, so that the conductivity change caused by component gradient is improved, and the cell voltage of the component gradient iridium tantalum coating anode is effectively reduced; and moreover, the iridium content is lower, and the preparation cost of the electrode is reduced.

The invention relates to an anorthite material and a preparation method thereof. The adopted technical proposal comprises the following steps of: according to (ZL200510019664.3) patent technology, namely a method for preparing titanium and a titanium alloy by utilizing titanium-containing furnace slag, taking molten tailings which is extracted with the titanium alloy as a raw material, adding 20 to 50 weight percent of silica, 0 to 60 weight percent of clay and 0 to 40 percent aedelforsite, and cooling a melt to obtain the anorthite material after the mixture is completely molten and a bath composition is uniform; or taking cold tailings extracted with the titanium alloy as the raw material, adding 20 to 50 weight percent of the silica, 0 to 60 weight percent of the clay and 0 to 40 percent the aedelforsite, carrying out mix grinding on the raw material and the admixture until the particle size is less than 0.1 mm, performing blank compression, and calcining the mixture at a temperature of between 1,200 and 1,400 DEG C to obtain the anorthite material. The method takes the tailings extracted with the titanium as the raw material, saves precious bauxite resources, has low cost, ensures that industrial residue is utilized with high added value, is environment-friendly and has simple process.

The invention discloses a TC4 titanium alloy preformed blank, a TC4 titanium alloy plate with a full lamellar structure and a preparation method of the TC4 titanium alloy plate, and belongs to the technical field of titanium alloy machining. According to the method, TC4 alloy powder prepared through hydrogenation dehydrogenation and plasma rotating electrode atomization serves as a raw material, and a high-density binary structure preformed blank is prepared through a three-step type hot isostatic pressing technology; a pure titanium sheath is adopted for packaging, two-heating-number rolling is conducted through the sheath, and the plate shape is optimized through convexity design of a working roller and dynamic roller bending force control; and after rolling, solid solution and two-stage aging composite heat treatment are combined, the head and the tail are cut off, and the TC4 titanium alloy plate is obtained. The problem of tissue segregation of a traditional cast ingot is solved through powder metallurgy, the obdurability is improved, and the anisotropy is reduced; and meanwhile, the raw material cost is reduced, the production period is shortened, the yield is increased, the surface quality is improved, and a reliable scheme is provided for green and efficient preparation of high-performance titanium alloy plates in the aerospace field.

The invention relates to the technical field of metal surface treatment, and discloses a titanium felt surface pickling process which is characterized by comprising the following steps: step 1, pretreating a titanium felt; step 2, preparing a pickling solution, wherein the pickling solution comprises 3-5% (by volume) of hydrofluoric acid, 15-20% (by volume) of nitric acid, 0.5-1% (by mass) of a corrosion inhibitor and the balance of deionized water; 3, acid pickling is conducted, specifically, the pretreated titanium felt is hung in an acid pickling tank through a clamp, it is ensured that the titanium felt is completely immersed in an acid pickling solution, a stirring device is started, the speed is controlled to be 100-200 r / min, the temperature is controlled to be 30-40 DEG C, and acid pickling is conducted for 5-15 min; and step 4, cleaning. The titanium felt surface pickling process has the advantages of being efficient in cleaning, low in damage, environmentally friendly and safe.

The invention discloses an anti-radiation aluminum-based layered composite board and an explosive welding method thereof, and belongs to the technical field of metal material welding. According to the method, aluminum or aluminum alloy serves as a base plate, tantalum or tantalum alloy serves as a compound plate, a titanium / titanium alloy middle transition layer is introduced, direct impact of explosive detonation on the compound plate is avoided through an aluminum protection plate, a powdery emulsion explosive is combined with an inert diluent to regulate and control energy parameters, and gaps between plates are accurately set based on the explosive welding window theory; and one-time forming metallurgical bonding of multiple layers of heterogeneous materials is achieved. The density of the obtained composite board is reduced by 40% compared with that of a traditional lead protection layer, and the composite board has the characteristics of radiation resistance, light weight, high strength and corrosion resistance and is suitable for manufacturing of spacecraft radiation protection layers and other deep space equipment.

The invention discloses a 1500MPa-grade titanium alloy bar and a preparation method thereof, and belongs to the field of titanium alloy preparation. The 1500MPa-grade titanium alloy bar comprises the following chemical components in percentage by mass: 5.5 to 6.5 percent of V, 4.5 to 5.5 percent of Mo, 3.0 to 4.0 percent of Al, 2.5 to 3.5 percent of Zr, 1.5 to 2.5 percent of Cr, 1.5 to 2.5 percent of Nb, 0.9 to 1.1 percent of Fe and the balance of Ti and impurities. The preparation method comprises the following steps: preparing raw materials according to the components, pressing the raw materials into electrode blocks, welding to obtain consumable electrodes, and performing multi-vacuum consumable smelting to obtain cast ingots; the cast ingot is subjected to cogging forging in a beta area, multi-heating-number upsetting and drawing deformation in the beta area and forged into a bar in a two-phase area; and through multi-pass rolling and multiple solid solution aging heat treatment, the 1500MPa-grade titanium alloy bar is obtained, meanwhile, the ductility is kept to be 6% or above, and the requirement of future aerospace for high-performance titanium alloy is met.

The invention discloses a titanium-based composite material with an adjustable and controllable reinforced phase structure and a preparation method of the titanium-based composite material. The preparation method comprises the steps that matrix powder and reinforced phase raw materials are mixed, ball-milled and dried to obtain mixed powder; printing the mixed powder on a titanium alloy substrate through additive manufacturing to obtain a titanium-based composite material; wherein when the granularity of the reinforcing phase raw material is in a nanometer level and the mass percent of the reinforcing phase raw material in the mixed powder is 0.01%-2%, along with the gradient decrease of the mass percent of the reinforcing phase raw material, the structure of the reinforcing phase in the obtained titanium-based composite material is converted into a net shape, a net and dispersion coexistence shape and a dispersion shape. According to the preparation method, the titanium-based composite material with proper obdurability can be obtained by regulating and controlling the size and the content of the reinforced phase raw materials.

The invention belongs to the field of nickel-based alloy materials, and discloses a precipitation hardening type nickel-based alloy welding wire and a preparation method thereof.The precipitation hardening type nickel-based alloy welding wire comprises, by mass, 50%-60% of nickel, 15%-20% of chromium, 15%-20% of iron, 2%-4% of molybdenum, 2%-5% of niobium, 0.01%-2% of tantalum, 0.2%-2% of aluminum, 0.5%-1.2% of titanium, 0.03%-0.08% of carbon, 0.1%-0.5% of manganese, 0.1%-0.5% of silicon, 0.01%-0.05% of magnesium, 0.01%-0.05% of yttrium, 0.5%-2% of tungsten, 0.1%-0.6% of cobalt, 0.001%-0.02% of boron and the balance impurities; according to the precipitation hardening type nickel-based alloy welding wire and the preparation method thereof, through component optimization and process innovation, the nickel-based alloy welding wire with high-temperature strength, excellent hot crack resistance and welding toughness is provided.

The invention provides a reflective thermal insulation coating based on three-dimensional porous resin as well as a preparation method and application of the reflective thermal insulation coating. The coating is prepared from the following raw materials in parts by weight: 15 to 60 parts of polymer resin emulsion, 1 to 15 parts of good solvent, 1 to 15 parts of poor solvent, 5 to 15 parts of reflective filler, 2 to 5 parts of nano kaolin and 1 to 5 parts of silicon dioxide aerogel. The reflective filler is hollow glass microspheres jointly modified by a silane coupling agent and titanium n-butoxide. The chemical reaction between the silane coupling agent and the surfaces of the glass microspheres can enhance the binding force between the silane coupling agent and the resin matrix, and avoids the problems of aggregation and sedimentation in the coating, thereby improving the uniformity and stability of the coating. Meanwhile, titanium n-butoxide is introduced, a TiO2 coating layer is generated through a hydrolysis reaction, heat can be effectively reflected through the high reflectivity of TiO2, heat absorption of the coating is reduced, and the heat insulation effect is improved. Therefore, the double-modified hollow glass microspheres can play a better heat insulation role in the coating, and the overall heat insulation efficiency of the coating is improved.

The invention belongs to the technical field of metallurgical process control, and discloses a multi-sensor fused intelligent control system and method for the titanium reduction process of fine iron powder. The method aims at solving the problem that local carbon deposition is difficult to monitor and inhibit in real time in a traditional process. The method comprises the following steps of: constructing an in-furnace reaction thermodynamic constraint diagram by acquiring in-furnace temperature distribution, gas component distribution, a furnace wall vibration signal and a local pressure signal, and dividing an in-furnace region into a plurality of reaction front subregions according to the in-furnace reaction thermodynamic constraint diagram; in each partition, the system constructs a carbon deposition triggering network based on vibration-pressure coupling, the carbon deposition triggering probability is accurately calculated, and then a targeted self-adaptive gas injection strategy is generated. By globally optimizing gas injection parameters, real-time inhibition of local carbon deposition and effective separation of titanium in the titanium reduction process of the fine iron powder are achieved. According to the invention, the agglomeration phenomenon of the fine iron powder is reduced, the smoothness of a gas channel is kept, and the titanium recovery rate and the product quality are improved.

The invention relates to the technical field of brazing processes, in particular to a brazing process for connecting aluminum oxide ceramic and metallic titanium through low-activation brazing filler metal. According to the technical scheme, the method comprises the following steps that a to-be-welded face of the aluminum oxide ceramic is subjected to magnetron sputtering titanium film plating, the sputtering power ranges from 80 W to 150 W, the argon pressure ranges from 0.5 Pa to 1.5 Pa, the film thickness ranges from 0.5 micrometer to 5 micrometers, inert gas annealing treatment is conducted after film plating, the annealing temperature ranges from 400 DEG C to 550 DEG C, and the heat preservation time ranges from 10 min to 30 min; and the surface of the metal titanium substrate is subjected to laser micro-texture treatment, and a periodic groove structure with the depth being 10-50 microns is formed. The problems of poor wettability of the brazing filler metal and the ceramic, low joint strength and joint stress cracks are solved, meanwhile, radioactive substances generated by the brazing filler metal under the irradiation condition can be released within a short time, the equipment maintenance period is greatly shortened, and the equipment service life is prolonged.

The invention discloses a low-cost hydrogen embrittlement-resistant titanium bipolar plate for an electrolytic bath and a preparation method of the low-cost hydrogen embrittlement-resistant titanium bipolar plate. The low-cost hydrogen embrittlement-resistant titanium bipolar plate comprises a surface-modified titanium base material, an in-situ hydrogen-resistant layer formed on the surface of the titanium base material, and a noble metal conductive layer prepared on the surface of the in-situ hydrogen-resistant layer, the surface roughness Ra value of the titanium base material subjected to surface modification is 2-3.5 microns; the in-situ hydrogen-resistant layer is a titanium oxide layer or an oxygen inclusion layer which is generated on the surface of the titanium substrate in situ in an air atmosphere or an oxygen-enriched atmosphere, and the thickness of the in-situ hydrogen-resistant layer is 50-200nm; the precious metal conducting layer is made of at least one of platinum, gold, iridium and palladium, and the thickness of the precious metal conducting layer is 20-150 nm. Through simple surface modification and in-situ generation of the hydrogen-resistant layer, the method has the advantages of high process maturity, low process complexity, low material cost and great cost advantage.

The invention relates to the technical field of zinc alloy materials, in particular to a corrosion-resistant zinc alloy material and a preparation method thereof. The invention relates to a corrosion-resistant zinc alloy material which comprises the following components in percentage by mass: 8%-11% of aluminum, 0.25%-0.45% of copper, 0.1%-0.3% of nickel, 0.01%-0.02% of titanium, 0.01%-0.03% of cobalt, 0.01%-0.03% of lanthanum, 0.001%-0.002% of dysprosium, 0.003%-0.005% of manganese silicide and the balance of zinc. Through alloy components in a specific ratio and a fine preparation process, not only are original good casting performance and mechanical strength of the zinc alloy maintained, but also the corrosion resistance of the zinc alloy material is remarkably improved, the service life is prolonged, and the application range of the zinc alloy material is widened.