44 results about "Titanium boride" patented technology

The invention provides high-purity superfine titanium diboride and a preparation method thereof, and relates to the field of titanium diboride preparation. The method comprises the following steps: mixing boron oxide, titanium hydride, a carbon source, nano rare earth oxide and an organic solvent, and drying to obtain a mixture; in a vacuum environment, performing first roasting on the mixture to obtain a first roasted material; and in an oxygen-containing atmosphere, carrying out second roasting on the first roasting material to obtain the high-purity superfine titanium diboride. In the first roasting process, boron oxide, titanium hydride and a carbon source are completely melted and fully contacted, then further, the carbon source forms a carbon skeleton, the contact area between the melted boron oxide and titanium hydride and the carbon skeleton is further enlarged, liquid-liquid mixing and the increase of the contact area can reduce the reaction kinetic conditions, the reaction temperature is greatly reduced, and the reaction time is greatly shortened. The particle size of the generated titanium diboride is reduced, and the molten boron oxide and titanium hydride react on the porous carbon skeleton in a liquid-liquid form to generate the high-purity superfine titanium diboride.

The application relates to the technical field of ceramic materials, in particular to a boron carbide composite ceramic material and a preparation method and an etching component thereof. The preparation method comprises the following steps: forming granular materials containing boron carbide, titanium boride and silicon carbide, the granular materials have a spherical structure, the mass proportion of the boron carbide in the granular materials is 70%-90%, the mass proportion of the titanium boride is 5%-25%, and the mass proportion of the silicon carbide is 5%-25%; and the granular materials are sequentially subjected to pre-sintering and hot-press sintering to prepare the boron carbide composite ceramic material; wherein the temperature of the pre-sintering is 1200 DEG C-1500 DEG C. The application can promote the three-dimensional communication growth of sintering necks in the hot-press sintering process, effectively improve the material density, ensure the good uniformity of the material, and synergistically improve the etching resistance of the boron carbide ceramic material.

The invention relates to the field of refractory materials, in particular to a high-strength refractory material and a preparation method thereof, which are used for solving the problem that the existing traditional refractory material is low in strength and difficult to meet the high-standard requirement of modern industry on equipment. The high-strength refractory material comprises the following components: silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide, titanium diboride and a phosphorus-containing phenyl multi-epoxy-group binding agent, according to the preparation method, silicon carbide, tabular corundum, silicon powder, yttrium oxide, magnesium oxide and titanium diboride are taken as main raw materials, the main raw materials are endowed with excellent mechanical properties, and after a phosphorus-containing phenyl polyepoxy binding agent is added, the mechanical properties of the main raw materials can be further remarkably improved, so that the prepared refractory material has the characteristics of high strength, high temperature resistance and the like. The composite material shows high durability and reliability in a high-temperature environment, and is suitable for thermal protection in the high-temperature environment and internal construction of high-temperature equipment.

The application belongs to the technical field of refractory materials, and particularly relates to high-strength anti-stripping industrial kiln castable and a preparation method thereof. The industrial kiln castable provided by the application comprises white corundum, modified corundum, petalite, composite micropowder, modified micropowder, a binder and sodium hexametaphosphate. The white corundum, the modified corundum and the petalite are used as aggregates of the kiln castable, the composite micropowder and the nano micropowder are added to fill the aggregate gaps, and the porosity of the castable is reduced. The titanium dioxide is used to dope the corundum to form a solid solution, and a silica ceramic layer is coated on the surface of the nano titanium diboride by using a sol-gel method, so that the interface bonding force between the nano titanium diboride and the matrix is strengthened, the rigid reinforcing points are increased, and the high-temperature compressive strength is improved.

The invention relates to the technical field of metal-based composite materials, in particular to a preparation method of a titanium-based composite material with a bimodal non-uniform net structure. The invention provides a preparation method of a titanium-based composite material with a bimodal non-uniform net structure, which comprises the following steps: mixing titanium alloy metal powder as a base material with nano titanium diboride, lanthanum hexaboride and a silicon powder reinforcement material through high-energy ball milling to obtain composite powder; a field-assisted sintering technology (FHP) is utilized, and a non-continuous reinforced titanium-based composite material (DRTiMCs) sintered blank is obtained; and carrying out heat preservation in a vacuum heat treatment furnace, and then carrying out a hot rolling experiment to obtain the DRTiMCs with the bimodal non-uniform network structure. The bimodal non-uniform net structure is composed of micron TiBw, nano TiBw, nano La2O3 and nano silicide, DRTiMCs of the bimodal non-uniform net structure have excellent strength and ductility, the tensile strength reaches 1544 MPa and 1560 MPa, and the percentage elongation after fracture is 7.7% and 10.2%. The DRTiMCs provide a good working idea for further development and engineering application of the composite material in the fields of aviation and aerospace.

The invention relates to the technical field of self-lubricating fabric liner materials, in particular to a composite filler synergistically-enhanced high-temperature-resistant self-lubricating fabric liner composite material and a preparation method thereof. The invention provides a self-lubricating fabric liner composite material. The self-lubricating fabric liner composite material comprises a polyimide fabric and a polyimide resin composite material compounded in the polyimide fabric, the polyimide resin composite material comprises polyimide resin and a composite reinforcing material dispersed in the polyimide resin; the composite reinforcing material comprises boron nitride and titanium boride. The self-lubricating fabric liner composite material can bear the operation requirement of 400 DEG C high-temperature working conditions.

This invention relates to the fields of materials surface engineering and metallurgical equipment technology. Specifically, it relates to a composite coating for improving the lifespan of copper plates in crystallizers and its plasma spraying preparation method. The chemical composition, by mass percentage, includes: 35%-55% chromium, 20%-55% nickel, 5%-10% titanium diboride, 0.1%-0.3% niobium, with the balance being chromium carbide and unavoidable trace impurities. In this invention, titanium diboride and chromium carbide are used as the main hard reinforcing phases, enabling the coating to exhibit excellent wear resistance at both room temperature and high temperature. During the spraying process, a hollow graphite electrode is used, generating a plasma arc. Simultaneously, the ablation products (carbon) provide a carbon source for the formation of chromium carbide. Titanium powder and boron powder undergo an in-situ reaction in the plasma arc to generate titanium diboride. This in-situ synthesis technology results in fine and uniformly distributed hard phase particles, forming a strong interface with the metal binder phase, avoiding the problems of interface contamination and weak bonding caused by externally added hard phases.

The application discloses a ceramic roller rod and a preparation method thereof, and relates to the technical field of ceramic matrix composites.The ceramic roller rod comprises a core layer, a transition layer and a surface layer;the layered gradient structure of the core layer, the transition layer and the surface layer is designed, alumina-zirconia, alumina-mullite and silicon nitride-titanium boride composite ceramic matrices are selected for each layer, and special matrix-reinforcing phase combinations are formed by matching nano silicon carbide particles, boron nitride particles and graphene microsheets;meanwhile, a pretreatment process of separately ball-milling and screening raw materials of each layer is adopted, thus solving the problems of the existing roller rod, such as single matrix matching conventional reinforcing phase, no functional doping ratio and easy agglomeration of overall mixed raw materials, so that the matrix and the reinforcing phase of each layer form material synergy, and the different functional requirements of the core bearing, the intermediate layer connection and the outer surface wear resistance and high temperature resistance are met respectively, and precise adaptation of material performance and functions of each part of the roller rod is realized.

The application discloses a kind of biomimetic laminated ballistic ceramic material, including matrix layer and embedded layer composition, it is matrix layer, embedded layer, matrix layer in turn by outside inside alternately stacked composition, wherein matrix layer is by B4C powder, SiC powder, nano additive, binder and plasticizer are made, embedded layer is Al2O3 powder, MgO or titanium boride at least one, hexagonal boron nitride powder, binder and plasticizer are made.The biomimetic laminated ballistic ceramic of the application has the advantages of light weight, high hardness, high toughness, good effect of anti-intensive attack, etc.Cutting after the ceramic sample is handled, and the target sample piece with the face density of about 27.5kg / m 2 The target sample piece is prepared by compounding with ultra-high molecular weight polyethylene fiber plate, 95 type 5.8mm ordinary bullet is carried out, and multiple bullet shooting can be effectively defended, and the highest can be continuously defended 8 bullet shooting, and the application is suitable for the protection demand of various light armored equipment and individual protection equipment to small caliber bullet, and the survival rate in battlefield is improved.

This invention relates to the field of sliding materials for seismic isolation bearings, specifically disclosing a high-temperature resistant and wear-resistant composite material for building seismic isolation bearings and its preparation method. The high-temperature resistant and wear-resistant composite material for building seismic isolation bearings comprises the following raw material components in parts by weight: aliphatic polyketone, high-styrene resin-modified methyl vinyl silicone rubber, silicone resin, fluorosilicone rubber, polytetrafluoroethylene, high-temperature resistant filler, lubricant, compatibilizer, and coupling agent; the high-temperature resistant filler comprises the following raw material components: chopped basalt fiber, titanium diboride, silicon nitride, and ceramic powder. The high-temperature resistant and wear-resistant composite material for building seismic isolation bearings prepared by this invention synergistically improves the material's wear performance, thermal stability, and compressive modulus through mechanisms such as hard embedding of filler, elastic energy absorption of rubber and plastic, and self-lubricating interface construction, thus overcoming the shortcomings of existing technologies.

The invention belongs to the technical field of refractory materials, and particularly relates to a high-strength anti-stripping industrial kiln castable and a preparation method thereof. The industrial kiln castable provided by the invention is prepared from white corundum, modified corundum, petalite, composite micro powder, modified micro powder, a binding agent and sodium hexametaphosphate. White corundum, modified corundum and petalite are adopted as aggregates of the kiln castable, and composite micro powder and nano micro powder are added to fill gaps of the aggregates, so that the porosity of the castable is reduced; the corundum is doped with titanium dioxide to form a solid solution, and the surface of the nano titanium diboride is coated with a silicon oxide ceramic layer by a sol-gel method, so that the interface bonding force between the nano titanium diboride and a matrix is enhanced, rigid reinforcing points are increased, and the high-temperature compressive strength is improved.

A Ramjet solid fuel comprising up to 50% metal by weight selected from the group consisting of aluminum, boron, boron carbide, magnesium, titanium, and titanium boride; between 2.0 and 9.0 weight percent fluorinated combustion aids selected from the group consisting of 3-hydroxybenzo trifluoride (3HBTF), hydroxyfluoro-2-propanol (HF2P), polytetrafluoroethylene, and trifluoroethanol (TFE); and up to 48% by weight of the remaining component being a hydroxyl terminated, epoxidized polybutadiene polymer (Poly BD 605E) (HO—CH2-CH═CH—CH2-CH2-CH—O—CH—CH2-CH2-CH—(CH═CH2)-CH2-CH═CH—CH2-CH2-CH—O—CH—CH2-OH).

The invention belongs to the technical field of metal-based composite materials, and relates to a multi-scale ceramic phase reinforced 750 DEG C-resistant titanium-based composite material and a preparation method thereof. The composite material is formed by compounding a matrix and multi-scale ceramic, the multi-scale ceramic phase is micron-scale titanium boride and nano-scale lanthanum oxide, the matrix is a near-alpha type Ti-Al-Zr-Sn-Mo-Nb-W-Si alloy, the mass parts of all elements including 6-8 mass parts of Al, 7-9 mass parts of Zr, 5-7 mass parts of Sn and the like are stipulated in the matrix, and through quantitative adding and in-situ reaction of LaB6, the multi-scale ceramic phase and the near-alpha type Ti-Al-Zr-Sn-Mo-Nb-W-Si alloy can be obtained. The total content of micron TiB and nano La2O3 is precisely regulated and controlled (the total integral number of the reinforced phase is increased by about 2.3% every time the increase of LaB6 is 0.5%), the in-situ generated reinforced phase is firmly combined with a matrix interface, impurity pollution is avoided, and the problems of agglomeration and interface combination of externally added ceramic particles are avoided.

The application provides a high-pressure corrosion-resistant hard alloy material and a preparation method and application thereof, and belongs to the technical field of alloy materials. The application improves the strength, toughness and corrosion resistance of the material by constructing titanium boride, silicon carbide and chromium diboride hard phases, introduces a multiphase composite binder composed of aluminum-iron alloy, high-entropy alloy and cerium hexaboride to realize high-temperature dense coating, and adopts asymmetric gradient paving and sintering process to construct a gradient structure with high surface hardness, high toughness in the core and stress concentration reduction in the transition layer. Meanwhile, the surface hardness and sealing property are strengthened by powder embedding and calcination, and the wear resistance, corrosion resistance and impact resistance of the material are comprehensively improved.

Provided are methods to convert—through a bottom-up approach—binary and ternary titanium carbides, nitrides, borides, phosphides, aluminides, and silicides into lepidocrocitic nanofilaments that in some cases self-assemble into 2D flakes by immersing them in a quaternary ammonium solution at moderate temperatures. The resulting flakes can be C-containing layers that are in turn comprised of nanofilaments in cross-section, some of which nanofilaments can be few microns long in some instances.

The invention discloses a medium-low temperature aluminum nitride ceramic heater and a preparation method thereof. The medium-low temperature aluminum nitride ceramic heater comprises an aluminum nitride ceramic substrate and a metal water-cooling base or a ceramic connecting support body which are sequentially arranged from top to bottom, wherein the metal water-cooling base or the ceramic connecting support body is used for supporting the aluminum nitride ceramic substrate; the aluminum nitride ceramic matrix is prepared from the following raw materials in percentage by mass: 85-95% of aluminum nitride, 3-5% of yttrium oxide, 0-10% of titanium nitride, 0-10% of titanium diboride, 0-5% of silicon carbide, 0-5% of tungsten carbide and 0-5% of titanium dioxide. According to the aluminum nitride ceramic heater, the formula of the aluminum nitride ceramic matrix of the aluminum nitride ceramic heater is optimized, other materials such as yttrium oxide, titanium nitride, titanium diboride, silicon carbide, tungsten carbide and titanium dioxide are introduced, and the content of each component is changed through formula blending, so that the purpose of performance optimization is achieved; the volume resistivity of the aluminum nitride ceramic heater in the medium and low temperature environment is effectively reduced, the adsorption force in the machining process is guaranteed to meet the requirement, the preparation technology is simple, operation is easy to control, and industrial production is facilitated.

This invention relates to the field of electronic materials technology, specifically disclosing a titanium diboride ceramic electrode slurry, its preparation method, and a ceramic electrode. The titanium diboride ceramic electrode slurry is characterized by being prepared from the following components by mass percentage: 40%–89% titanium diboride powder, 10%–50% organic system, 1%–5% solid binder phase, and 0–5% additives. This invention uses titanium diboride powder as the functional phase. The physicochemical properties of titanium diboride are similar to those of the ceramic substrate. By bonding it to the ceramic substrate through high-temperature sintering, the sintering shrinkage behavior is more compatible, effectively reducing stress and defects during co-firing, and improving bonding strength and process stability.

The invention relates to the technical field of boron carbide ceramics, in particular to boron carbide-titanium diboride composite powder, boron carbide-titanium diboride composite ceramic and a preparation method of the boron carbide-titanium diboride composite powder and the boron carbide-titanium diboride composite ceramic. The method comprises the following steps: uniformly dispersing an organic titanium compound and boron carbide into an organic solvent to obtain boron carbide-organic titanium compound slurry; adding pure water into the boron carbide-organic titanium compound slurry for complete hydrolysis reaction, and then carrying out suction filtration and drying to obtain a boron carbide-titanium dioxide precursor; and carrying out in-situ calcination on the boron carbide-titanium dioxide precursor to obtain the boron carbide-titanium diboride composite powder. According to the invention, the B4C composite powder is prepared by an organic titanium compound hydrolysis method, the powder is subjected to high-temperature calcination and converted into B4C-TiB2 powder, and then the powder is subjected to ball milling dispersion and hot pressed sintering, so that uniform dispersion of TiB2 particles and great improvement of mechanical properties are realized.

The invention discloses an alumina fiber high-temperature-resistant composite material and a preparation method thereof, and the alumina fiber high-temperature-resistant composite material comprises the following components by mass: 45-60 parts of alumina fiber; 20-35 parts of a modified alumina matrix; 3 to 8 parts of yttrium-doped lanthanum cerate; 2 to 6 parts of titanium boride-silicon carbide composite powder; 1 to 4 parts of lanthanum aluminate-mullite composite ceramic; 0.5-2 parts of a neodymium phosphate interface regulator; 0.3-1 part of a dispersant; 0.2 to 0.8 part of a sintering aid; by adding the four innovative components, the high temperature resistance, the mechanical property and the oxidation resistance of the material are synergistically improved, the prepared composite material can serve for a long time in the high-temperature environment of 1600-1800 DEG C, the breaking strength is larger than or equal to 350 MPa, the breaking tenacity is larger than or equal to 8.5 MPa * m (1 / 2), the oxidation resistance is excellent, and after heat preservation is conducted for 10 hours in the air atmosphere of 1800 DEG C, the service life is long. And compared with the prior art, the performance is obviously improved.

The invention relates to the technical field of alloys, in particular to a wear-resistant and light-weight hard alloy material, a preparation method and application of the wear-resistant and light-weight hard alloy material in anti-skid nails. According to the material, interface bonding is enhanced through double-grafted reduced graphene oxide, high-entropy alloy pre-alloyed powder is adopted as a binding phase, hard phases such as tungsten carbide, titanium diboride and titanium carbide are combined, and the composite material is prepared through multiple processes such as composite slurry preparation, spray drying, multi-stage sintering, vacuum impregnation secondary coating and hot-pressing densification. And constructing a gradient structure from inside to outside. The obtained material is low in density, high in hardness, high in transverse breaking strength, excellent in toughness and wear resistance and high in thermal diffusivity, the problems that a traditional anti-skid nail is high in density, weak in interface bonding and poor in thermal conductivity are effectively solved, and light weight and long-acting durability are achieved.

The invention discloses a high-strength titanium alloy flux-cored wire for additive manufacturing. Flux-cored powder of the high-strength titanium alloy flux-cored wire is composed of, by mass, 4.5%-5.0% of aluminum powder, 2.8%-3.2% of vanadium powder, 5.3%-5.8% of molybdenum powder, 1.5%-1.7% of iron powder, 1.4%-1.6% of chromium powder, 1%-3% of titanium boride powder and the balance titanium powder and inevitable impurities. The preparation method comprises the following steps: 1, preparing flux core powder, filling, closing, rolling and drawing; 2, roller die drawing and vacuum annealing; 3, roller die continuous drawing and polishing; the flux-cored wire is used for additive manufacturing. According to the method, EDEM software is used for calculating the fluidity and the proportion of the coarse powder and the fine powder, homogenization and low impurity content of the flux-cored powder are achieved, element burning loss and segregation are avoided when the flux-cored wire is used for additive manufacturing, a titanium alloy product uniform in component and structure is obtained, the preparation freedom degree is high, the production efficiency and the yield are high, and the method is suitable for the field of additive manufacturing.

The application relates to a preparation method of a magnesium-carbon refractory material with added titanium boride for enhancing resistance to acid high-titanium slag corrosion, and belongs to the field of refractory materials. The magnesium-carbon refractory material is prepared by taking magnesite and flake graphite as main raw materials and directly introducing titanium boride powder as a functional additive phase. The introduced titanium boride can effectively improve the matrix structure and interface state of the magnesium-carbon refractory material, improve the penetration resistance and chemical corrosion resistance of the material under the action of acid high-titanium slag, and also consider the oxidation resistance and high-temperature service stability of the material. After the magnesium-carbon refractory material is added, the microstructure and interface state of the material can be effectively improved, the penetration and chemical corrosion of the acid high-titanium slag on the material are slowed down; meanwhile, the titanium boride and the magnesium-carbon system synergistically act, which is helpful to improve the structural compactness, slag corrosion resistance and high-temperature service stability of the material, so that the obtained magnesium-carbon refractory material is more suitable for acid high-titanium slag working conditions such as a vanadium and titanium extraction smelting separation furnace, the process flow is simple, and the preparation cost is low.

The invention is suitable for the technical field of automobile brake parts, and provides a wear-resistant brake pad and a preparation method thereof. The wear-resistant brake pad comprises the following raw materials in parts by weight: 20-28 parts of ceramic fibers, 12-18 parts of phenolic resin, 8-15 parts of graphite, 6-10 parts of nano aluminum oxide, 4-8 parts of modified titanium boride, 3-6 parts of cashew nut shell oil modified phenolic resin, 5-9 parts of barium sulfate, 3-7 parts of sericite powder, 4-9 parts of steel fibers and 1-3 parts of a silane coupling agent KH550. The ceramic fibers and the steel fibers synergistically reinforce a skeleton structure, are combined with the wear-resistant synergistic effect of the modified titanium boride and the nano aluminum oxide, and are matched with the cashew nut shell oil modified phenolic resin to optimize the combination performance, so that the wear resistance and the service life of the brake pad are remarkably improved while the brake stability of the brake pad is ensured; the problems that an existing brake pad is abraded too fast after being used for a long time, and braking efficiency is reduced are solved.

The invention provides a layered gradient structure cement-based wave-absorbing material and a preparation method thereof, and relates to the technical field of electromagnetic wave absorbing materials, and the layered gradient structure cement-based wave-absorbing material is formed by sequentially compounding an impedance matching layer, a loss transition layer and a reflection back layer. The impedance matching layer comprises Portland cement, aluminum nitride and silicon dioxide aerogel microspheres; the loss transition layer comprises Portland cement, titanium diboride, carbonyl iron powder and silica fume; and the reflection back layer comprises Portland cement nickel-plated carbon fibers and flaky zinc powder. The method comprises the step of sequentially preparing an impedance matching layer, a loss transition layer and a reflection back layer, the functions of a conductive agent, a structural framework, a magnetic protective agent and an interface polarization reinforcing agent of titanium diboride in the cement-based wave-absorbing material are achieved, and particularly the interface polarization reinforcing effect caused by surface in-situ chemical modification is achieved. The material disclosed by the invention shows wider effective bandwidth, higher strength and long-term performance stability.

This invention belongs to the field of special ceramics preparation technology, specifically relating to a high-temperature resistant special ceramic and its preparation method. The high-temperature resistant special ceramic, by weight, comprises the following raw materials: 22-24 parts calcined kaolin, 20-22 parts andalusite, 30-32 parts tabular corundum, 2.5-4.5 parts calcite, 1.3-2.3 parts cerium phosphate, 15-17 parts calcium zirconate, 3.7-4.7 parts yttrium oxide, 2-3 parts titanium diboride, and 1.2-2.2 parts gadolinium trioxide. The high-temperature resistant special ceramic of this invention uses tabular corundum, calcined kaolin, and andalusite as main raw materials, calcite and cerium phosphate as sintering aids, and calcium zirconate, yttrium oxide, titanium diboride, and gadolinium trioxide as fillers, ensuring that the prepared special ceramic exhibits excellent flexural strength and fracture toughness at high temperatures.

The invention relates to an induction heating body TiB2-ZrB2 crucible which comprises a crucible body, and the crucible body is a composite body of TiB2 and ZrB2. In the composite body, the TiB2 accounts for 60%-80% by mass, and the ZrB2 accounts for 20%-40% by mass. The crucible has the beneficial effects that the crucible body is a composite of TiB2 (titanium boride) and ZrB2 (zirconium boride), so that the crucible has excellent high temperature resistance (extremely high melting point), oxidation resistance and corrosion resistance, also has high heat transfer efficiency, and can stably work in an extremely high temperature environment; tiB2 and ZrB2 have good conductivity and can serve as induction heating bodies, materials in the crucible are rapidly and evenly heated in an electromagnetic induction heating mode, and the heat transfer efficiency is improved; the problems that a crucible material in the prior art is insufficient in high temperature resistance, prone to oxidation corrosion and low in heat transfer efficiency are solved.

The objective is to provide a molten metal holding member consisting of a deposition boat or crucible with improved wettability of the molten metal, and a method for manufacturing the same. [Solution] A molten metal holding member which is a deposition boat or crucible made of BN ceramics or composite ceramics containing BN, wherein at least the inner bottom surface is provided with a surface treatment film made of a titanium compound containing titanium nitride and titanium boride.

This invention discloses a wear-resistant and corrosion-resistant photovoltaic bracket and its preparation method. The bracket includes a modular high-strength support frame and a double-layer composite wear-resistant and corrosion-resistant coating. The frame is integrally molded from a three-reinforcing phase synergistic gradient-reinforced aluminum-based composite material consisting of micron-sized silicon carbide, nano-sized titanium boride, and graphene nanosheets. The reinforcing phases are gradient-distributed from the surface to the core, and the graphene nanosheets are modified with ethyl cellulose. The bottom layer of the coating is a cerium-zinc-aluminum-magnesium alloy plating, and the top layer is a polyvinyl fluoride coating containing nano-alumina-silicon nitride composite particles. The preparation method includes raw material pretreatment, gradient composite molding, heat treatment strengthening, frame processing, coating preparation, and assembly steps. This invention breaks through the performance bottlenecks of traditional materials, achieving a synergistic effect of ultra-high strength and high toughness, self-lubrication, and fatigue wear resistance. It exhibits excellent wear and corrosion resistance, significant lightweighting of the bracket, environmentally friendly and low-energy-consumption manufacturing process, convenient transportation and installation, low total life-cycle cost, and long service life.