215 results about "Boride" patented technology

The invention provides a method for preparing a zirconium boride ceramic material through pressureless sintering, and belongs to the technical field of zirconium boride ceramics. The method comprises the steps of preparing zirconium boride composite powder, modifying silicon carbide nanowires and mixing and sintering. The method for modifying the silicon carbide nanowire comprises the steps of acid treatment and modification, the modification step comprises the following steps: adding aluminum isopropoxide into absolute ethyl alcohol, adding a nitric acid solution, stirring for 1.5-2.0 hours at the temperature of 60-63 DEG C, adding the acid-treated silicon carbide nanowire, carrying out ultrasonic dispersion and water bath evaporation, then drying, putting into a muffle furnace, and carrying out heat preservation for 2.0-2.2 hours at the temperature of 490-500 DEG C to obtain a modified silicon carbide nanowire; the ceramic material prepared by adopting the method disclosed by the invention is high in density, good in mechanical property and excellent in high-temperature oxidation resistance and stability in a complex environment.

The invention relates to the technical field of high-entropy ceramic powder, in particular to diboride high-entropy ceramic powder and a preparation method thereof.The preparation method comprises the following steps that five transition metal oxides, boron powder and fused salt serve as raw materials, are evenly mixed through a mixer and then are dried at the temperature of 60-200 DEG C, and a mixture is obtained; then, the mixture is put into a corundum crucible, and heat preservation is conducted for 1-20 h at the temperature interval of 700-1600 DEG C and under the protective atmosphere; and after the reaction is completed, cooling, washing, carrying out suction filtration, and drying at 60-200 DEG C to finally prepare the diboride high-entropy ceramic powder. The method has the advantages of low synthesis temperature, small product particle size, uniform element distribution, environment friendliness and the like, and the prepared diboride high-entropy ceramic powder shows excellent electromagnetic wave absorption performance.

The invention provides a refractory ceramic-based material for a smelting furnace lining and a preparation method of the refractory ceramic-based material, and belongs to the technical field of ceramic refractory materials. The material comprises coated modified fused magnesite main aggregate, ceramic sand main aggregate, surface coated magnesium oxide fine powder, gamma-phase aluminum oxide micro powder, an aluminum dihydrogen phosphate solution, alkaline silica sol, a pre-reaction spinel precursor and zirconium boride micro powder. The coated modified fused magnesite main aggregate is prepared by mixing and sintering fused magnesite, silicon carbide composite powder, chromium sesquioxide powder and phenolic resin powder. And mixing the silicon carbide powder and the magnesium oxide powder, and depositing a silicon nitride layer on the particle surface to prepare the silicon carbide composite powder. The surface-coated magnesium oxide fine powder is formed by coating the surfaces of magnesium oxide fine powder particles with aluminum oxide. The pre-reaction spinel precursor is prepared by the following steps: preparing a mixed salt solution from magnesium nitrate hexahydrate and aluminum nitrate nonahydrate by using deionized water, reacting, aging and carrying out heat treatment. And the ceramic sand main aggregate is made of zirconium oxide. And all the layers are matched for use to realize balanced improvement of performance.

The invention belongs to the technical field of special ceramic preparation, and particularly relates to high-strength special ceramic and a preparation method thereof. The high-strength special ceramic is prepared from the following raw materials: alumina powder, quartz powder, serpentine, phosphorus slag, eucryptite, barium borate, nano yttrium trifluoride, nano hafnium boride, nano strontium zirconate, nano lanthanum titanate and polyborosilazane. According to the high-strength special ceramic disclosed by the invention, the aluminum oxide powder, the quartz powder, the serpentine and the phosphorus slag are taken as matrix raw materials, eucryptite, barium borate and yttrium trifluoride are taken as fluxing agents, and nano hafnium boride, nano strontium zirconate, nano lanthanum titanate and polyborosilazane are taken as fillers, so that the prepared special ceramic has excellent bending strength and fracture toughness.

The invention provides a high-temperature-resistant creep-resistant tungsten alloy, and relates to the technical field of powder metallurgy, the tungsten alloy comprises, by mass, 3-8 wt% of Re, 0.2-1 wt% of carbide, 0.1-0.5 wt% of boride, and the balance tungsten and inevitable impurities; the carbide is selected from one or more of TiC, ZrC, TaC and HfC; the boride is selected from one or more of TiB2 (titanium diboride), HfB2 (hafnium diboride) and ZrB2 (zirconium diboride). The high-temperature-resistant creep-resistant tungsten alloy is prepared by adding low-content rhenium, carbide and boride into pure tungsten and adopting a unique preparation method, and the technical defects that an existing tungsten-rhenium alloy is insufficient in strength and creep resistance at the ultrahigh temperature (larger than or equal to 2000 DEG C), and a traditional multi-pass processing technology is complex are overcome.

The invention provides a micron-scale high-melting-point oxide sheet layer enhanced ultra-high-temperature ceramic-based anti-ablation composite coating and a preparation method thereof.The preparation method comprises the steps that ultra-high-temperature carbide / boride ceramic powder, silicide powder and high-melting-point metal oxide powder are mechanically mixed, and spraying mixed powder with uniform components is obtained; the mixed powder is sprayed on the surface of a base body in a plasma spraying mode, and the ultra-high-temperature ceramic-based anti-ablation composite coating containing a micron-scale oxide lamellar structure is obtained; the lamellar high-melting-point oxide phase is introduced into the ultrahigh-temperature ceramic-based composite silicide coating, so that the problem that the silicon-containing glass phase is easy to lose and splash under high-heat-flow scouring is effectively solved. The high-melting-point oxide sheet layer serves as a physical barrier, can effectively limit flowing of a silicon-containing glass liquid phase in the ablation process and allows gaseous oxidation products to escape at the same time, so that a firmly-attached composite oxide layer is formed, and the oxidation resistance and the anti-scouring and anti-stripping capacity of the coating are greatly improved.

The invention relates to the technical field of dissimilar material connection, in particular to a method for regulating and controlling molybdenum steel brazed joint intermetallic compounds based on transition elements. According to the technical scheme, the method comprises the following steps that a transition element coating is deposited on the surface of a molybdenum matrix, transition elements are selected from one or more of Ti, V, Nb, Zr, Hf and Ta, and the molybdenum matrix and a steel matrix are brazed through boron-containing Ni-based brazing filler metal; in the brazing process, the transition element and the boron element preferentially react to generate a transition element boride, and therefore generation of MoNiBintermetallic compounds is inhibited. According to the method, the transition element coating is introduced, a brazing interface reaction path is actively intervened and reconstructed from the thermodynamic angle, and the problem of continuous generation of the brittle MoNiBintermetallic compound in the molybdenum / steel brazing joint is fundamentally solved.

The invention relates to an amorphous reconstruction hydrogen evolution catalyst and a preparation method and application thereof. The amorphous reconstruction hydrogen evolution catalyst is of a heterostructure, the surface layer of the amorphous reconstruction hydrogen evolution catalyst is a transition metal oxide, and the inner layer of the amorphous reconstruction hydrogen evolution catalyst is a transition metal boride or a transition metal boron-phosphorus co-doped compound; the transition metal oxide, the transition metal boride and the transition metal boron-phosphorus co-doped compound are all in an amorphous state; transition metals in the amorphous state reconstruction hydrogen evolution catalyst are at least two of Fe, Co, Ni, Ce, Cu, Mn, V, W and Mo.

The present application belongs to the technical field of the synthesis of chiral boron compounds, and in particular relates to an MOF-Cu(II) / CMC composite material, and a preparation method therefor and the use thereof. The preparation method for an MOF-Cu(II) / CMC composite material of the present application comprises: dropwise adding an aqueous solution of sodium carboxymethyl cellulose to an aqueous solution of a bivalent copper salt, performing solid-liquid separation, mixing obtained composite microspheres with an organic solution of trimesic acid, heating the resulting mixture, and subjecting same to solid-liquid separation, so as to obtain an MOF-Cu(II) / CMC composite material. The MOF-Cu(II) / CMC composite material is used in an asymmetric chiral boron addition reaction. The reaction is performed at room temperature, involves mild conditions, is applicable to a wide range of substrates and has a high yield and enantioselectivity. Moreover, the method can achieve the synthesis of a chiral organic boride in a solvent having simple components, providing an efficient new method for the preparation of drug molecules and active intermediates, and also broadening the range of substrates used for the preparation of chiral organic borides.

The invention provides an insulating high-thermal-conductivity flexible silica gel sheet and a preparation method thereof. The silica gel sheet comprises the following components in parts by weight: 1-5 parts of organic boride; 1 to 5 parts of a polysilazane compound; 1-5 parts of hydrogen-containing silicone oil; 5 to 10 parts of dimethyl silicone oil; 20 to 30 parts of vinyl silicone oil; 50-80 parts of a heat-conducting filler; 0.01 to 0.1 part of a platinum catalyst; the heat-conducting filler comprises a heat-conducting filler 1 and a heat-conducting filler 2, the heat-conducting filler 1 is selected from any one of boron nitride, aluminum oxide and magnesium oxide, and the heat-conducting filler 2 is selected from any one of graphene, silicon carbide and silicon nitride. The flexible silica gel sheet provided by the invention realizes comprehensive optimization of high heat-conducting property, excellent electrical insulating property, thermal mechanical stability and surface flatness.

The invention relates to the technical field of metal material connection and surface engineering, in particular to MAB phase reinforced Cu-Sn-Ti active brazing filler metal and a preparation method thereof. According to the MAB phase enhanced Cu-Sn-Ti active brazing filler metal, an MAB phase serves as a strengthening phase and is layered ternary boride ceramic, M is Mo or Cr, A is Al, and the brazing filler metal comprises, by mass, 60%-65% of Cu powder, 15%-18% of Sn powder, 10%-12% of Ti powder and the balance MAB powder. The MAB phase ceramic with a unique layered structure and chemical activity is introduced, the interface reaction of a diamond / steel substrate can be actively regulated and controlled while dispersion strengthening of the brazing filler metal substrate is achieved, a tough and tough combined gradient interface is formed, and therefore the diamond composite wear-resistant coating with excellent comprehensive performance is obtained.

This invention relates to a wear-resistant shovel blade for engineering machinery and its preparation method, belonging to the field of engineering machinery parts manufacturing technology. The specific preparation method involves: after rolling, quenching, and high-temperature tempering, the shovel blade material undergoes carburizing treatment using ion plating. Then, a W transition layer and a WTiTaB boride gradient coating with varying composition are prepared using magnetron sputtering. This invention combines the WTiTaB boride gradient coating, physical vapor deposition, and carburizing technology, which can mitigate the difference in physical properties between the boride coating and the substrate material of the shovel blade, improve the surface hardness and support of the substrate material, and result in high surface hardness, core toughness, and excellent tribological properties. Compared with traditional carburizing processes, the surface hardness is increased by nearly three times, the surface treatment time is shortened by more than 90%, and the wear rate is reduced by 78-83%.

The application belongs to the technical field of carbon / ceramic composite material preparation, and provides an impregnation sealing liquid for carbon / ceramic friction discs, an impregnation sealing method, a densified carbon / ceramic friction disc and application thereof. The impregnation sealing liquid comprises 2-5% of an interface reinforcing metal component, 3-6% of a friction and wear resistant ceramic component, 2-5% of a metal oxide component and the balance of a polymer. The polymer comprises liquid polycarbosilane and liquid polyborosilazane, and the mass ratio of the liquid polycarbosilane to the liquid polyborosilazane is 7-9:1-3. The interface reinforcing metal component comprises one or more of titanium powder, chromium powder, nickel powder, cobalt powder and molybdenum powder. The friction and wear resistant ceramic component comprises one or more of silicon carbide, zirconium boride, boron carbide and zirconium carbide. The metal oxide component comprises one or more of cerium oxide, yttrium oxide and lanthanum oxide. The impregnation sealing liquid can realize the triple improvement of the interface bonding force, the friction stability and the high-temperature oxidation resistance of the carbon / ceramic friction disc.

The application discloses a method for realizing an integrated ultrahigh-temperature environmental barrier composite coating. After a high-entropy alloy or boride layer and a molybdenum metal pre-coating layer are pre-coated on the surface of a substrate, a silicon-boron co-embedding deposition is carried out through a pre-oxidation process to form an ordered Mo-Si-B multilayer structure in the molybdenum metal layer. A composite coating formed by a metal silicide and silicon dioxide is cold sprayed on the Mo-Si-B multilayer structure to form a three-dimensional network structure composite self-healing layer through high-temperature sintering. An alloy oxide is cold sprayed or magnetron sputtered outside the composite self-healing layer to form a water vapor resistant layer. Through the integrated coating preparation process, the advantages of different components are complementary, and the effective protection of various refractory alloys in a wide temperature range (room temperature-1700 DEG C) can be realized.

This invention belongs to the field of aluminum alloy grain refiners, specifically relating to an aluminum-based multi-component boride grain refiner resistant to Si poisoning and its preparation method. The grain refiner is produced by combining an aluminum matrix with hexagonal plate-like (Ti) compounds uniformly distributed within the aluminum matrix. 0.33 Nb 0.33 V 0.33 The method comprises the following steps: (1) Weighing raw materials: Weigh industrial pure aluminum, aluminum-boron master alloy, titanium, niobium, vanadium, and boron in proportion; (2) Smelting: Place industrial pure aluminum, aluminum-boron master alloy, titanium, niobium, vanadium, and boron in a water-cooled copper crucible of a vacuum arc furnace and smelt to obtain a grain refiner. The grain refiner prepared by this invention can achieve a good grain refinement effect, is inexpensive and has high preparation efficiency, and the raw materials for the grain refiner are easy to obtain.

The application provides a kind of interlayer glass with shell-imitating structure and its preparation method, interlayer glass includes inner shell-imitating layer, shear hardening sandwich layer and outer shell-imitating layer;The shear hardening sandwich layer is prepared by hydroxyl silicone oil and boride with mass ratio of 18-22:1.The interlayer glass of the application introduces the sandwich layer formed by hydroxyl silicone oil and boride and the shell-imitating layer with shell-imitating structure characteristics, through the joint action of shear hardening sandwich layer and shell-imitating layer, the heat insulation performance and impact resistance under different impact speed of interlayer glass are improved.

The invention belongs to the technical field of refractory materials. The invention provides a graphene ceramic composite material and a preparation method and application thereof, the preparation method comprises the following steps: adding zirconium boride particles, silicon carbide particles, yttrium oxide and lanthanum-doped cerium oxide into a graphene oxide dispersion liquid, and carrying out ball milling and drying to obtain raw material powder; the raw material powder is put into a graphite mold to be sintered, and the graphene ceramic composite material is obtained. The raw material powder is prepared from the following components in parts by volume: 5.6 to 6 parts of graphene oxide, 70 to 72 parts of zirconium boride particles, 20 to 21 parts of silicon carbide particles, 1.5 to 2 parts of yttrium oxide and 1 to 1.3 parts of lanthanum-doped cerium oxide. By increasing the content of graphene oxide, the bending strength of the composite material is further improved while the relative density of the prepared composite material is increased.

The application discloses a boride identification method, system and related device, and relates to the field of alloys.The method comprises the following steps: obtaining a metallographic image of a titanium-aluminum alloy; converting the metallographic image into a first image represented by color in terms of hue, saturation and brightness; determining a saturation threshold and a brightness threshold; dividing each pixel point in the first image into a boride category and a background category according to the saturation threshold and the brightness threshold; obtaining a binary image of the first image according to the classification results of the pixel points; identifying at least one target region composed of multiple target pixel points in the binary image by using a continuous region identification algorithm; and determining the target region as a boride region.The application screens the pixel points by using saturation and brightness, so that the possibility of selecting a shallow corrosion structure is reduced; after a suspected boride region is selected, the continuous region identification algorithm is used to identify and screen according to the shape characteristics of the boride. Therefore, the application can effectively improve the identification accuracy of the boride.

The application discloses a preparation method of a high-strength aluminum nitride substrate and relates to the technical field of aluminum nitride substrate preparation. The method comprises the following steps: preparing modified aluminum nitride powder; adding a non-oxygen composite sintering aid composed of fluorides and borides to the modified aluminum nitride powder to obtain a mixture; the adding amount of the composite sintering aid is 0.5wt%-5wt% of the total mass of the modified aluminum nitride powder; the mixture, a binder and a dispersant are mixed in a planetary ball mill to obtain a uniform slurry; the slurry is subjected to flow casting to form a green porcelain embryo, and then, glue removal treatment is performed under the protection of flowing inert gas to remove the binder; the green porcelain embryo after glue removal is placed in an atmosphere sintering furnace to perform a multi-stage temperature rising sintering procedure to form a ceramic body; and the sintered ceramic body is subjected to heat treatment and then cooled to obtain the aluminum nitride substrate. The application reduces the lattice thermal resistance of the aluminum nitride substrate and improves the mechanical strength of the aluminum nitride substrate.

This invention discloses an energy-saving and healthy glass, belonging to the field of glass product technology. The energy-saving and healthy glass comprises a functional layer formed by an inorganic functional oil-based coating and a glass substrate. The inorganic functional oil-based coating, by weight, comprises 8-30 parts modified SiO2, 2-10 parts LiNbO3, 2-8 parts Al2O3, 5-12 parts CaF2, 10-20 parts rare earth boride, 0.4-1 part dispersant, 0.2-0.5 parts defoamer, 0.2-1 part clarifying agent, 3-6 parts negative oxygen ion initiator, and 25-70 parts solvent. Simultaneously, this invention also provides a method for preparing the energy-saving and healthy glass, which is simple to operate and has low preparation cost. Without affecting the light transmittance of the glass, it ensures the energy-saving and healthy glass's effects of UV protection, infrared protection, antibacterial and bactericidal properties, and chemical corrosion resistance. The transmittance of ultraviolet and infrared rays is less than 5%, while the transmittance of visible light can reach over 70%.

The invention discloses a blast furnace slag runner castable and a preparation method thereof, and relates to the technical field of refractory materials, and the blast furnace slag runner castable comprises the following raw material components in percentage by mass: 6-9% of 15-8mm brown aluminum oxide, 14-16% of 8-5mm brown aluminum oxide, 17-19% of 5-3mm brown aluminum oxide, 13-15% of 3-1mm brown aluminum oxide, 8-11% of 1-0mm compact corundum, 6-8% of 1-0mm silicon carbide, 3-8% of 1-0mm silicon carbide, and the balance of water. The invention relates to a high-strength wear-resistant ceramic material, which is prepared from the following raw materials in percentage by weight: 8 to 12 percent of 200-mesh silicon carbide, 3 to 5 percent of zirconite-silicon carbide composite powder, 6 to 8 percent of aluminum oxide micro powder, 2 to 3 percent of silicon micro powder, 2 to 2.5 percent of cement, 1 to 3 percent of ball pitch, 0.5 to 2 percent of carbon black, 0.2 to 0.5 percent of boron carbide, 1 to 1.5 percent of metal silicon powder, 0.3 to 0.6 percent of zirconium boride, 0.03 to 0.05 percent of metal aluminum powder, 0.05 to 0.08 percent of organic fiber and 0.1 to 0.2 percent of water reducing agent. The oxidation resistance, slag corrosion resistance and scouring resistance of the blast furnace slag runner castable are improved, the cost is reduced, and the service life is prolonged.

A sliding member 1 is made of a metal material as a base material, has a sliding surface 10, and has, in the sliding surface 10, a diffusion penetration layer 11 containing at least one of a carbide or a boride. In a plan view, the sliding surface 10 has: a plurality of furrow parts 3 extending in a prescribed direction; a plurality of raised bed parts 2 positioned between two adjacent furrow parts 3 of the plurality of furrow parts 3; and a plurality of protrusion parts 4 that are arranged along the two edges of each of the plurality of furrow parts 3 and that are each positioned between a corresponding one of the furrow parts 3 and an adjacent one of the raised bed parts 2. In a cross-sectional view, the furrow parts 3 are each more recessed than the raised bed parts 2 adjacent thereto on both sides, and each of the plurality of protrusion parts 4 protrudes more than the raised bed parts 2 adjacent thereto on both sides.

The invention discloses a preparation method of a vanadium-nickel boride nanoparticle electro-catalysis material, and belongs to the technical field of nano material electro-catalysis. Carbon black is used as an auxiliary source, sodium borohydride is used as a reducing agent, a nickel and vanadium mixed salt solution is adopted, precursor powder containing nickel, vanadium and boron is obtained through a one-step reduction method, then calcination treatment is conducted at a certain temperature to obtain NiVB2 / C, the morphology of the catalyst is regulated and controlled by controlling the molar ratio of sodium borohydride to metal salt and the calcination temperature, and the nano-particles NiVB2 / C are obtained. The production process is simple and controllable, the cost is low, the catalytic activity of the hydrogen evolution reaction is greatly improved, and the excellent electro-catalytic performance is achieved.

The invention relates to the field of ultrahigh-temperature ceramic materials, and discloses rare earth element doped quinary high-entropy boride powder and a preparation method thereof. The preparation method of the rare earth element doped quinary high-entropy boride powder comprises the following steps: 1) taking metal oxide powder, boron carbide powder and graphite powder as raw materials, and performing wet mixing to prepare mixed powder, 2) briquetting the mixed powder to prepare a green body, putting the green body into a high-temperature carbon tube furnace into which protective gas is introduced, heating, and carrying out pressureless sintering to obtain clinker; and 3) grinding the clinker to obtain the rare earth element doped high-entropy boride powder. The rare earth element doped quinary high-entropy boride powder prepared by the method has the advantages of high purity, no impurity phase, uniform metal element distribution and high rare earth element content, the preparation process is simple, the cost is low, the reaction temperature is lower, and large-scale production is facilitated.

This invention belongs to the field of laser additive manufacturing and surface engineering technology, and discloses a ternary boride Mo2NiB2 cermet and its preparation method, as well as an alloy barrel and its preparation method. The ternary boride Mo2NiB2 powder of this invention generates a stable, uniformly dispersed, high-hardness ternary boride hard phase in situ during the cladding process, endowing the alloy layer with excellent resistance to abrasive wear and corrosion. Simultaneously, a collaborative technical equipment system is formed by combining specialized internal hole laser cladding equipment, specially prepared ternary boride Mo2NiB2 cermet powder, and an optimized process integrating synchronous preheating, to overcome the technical bottleneck of internal wall cladding and ensure the acquisition of a dense, firmly bonded, and uniformly performing reinforced layer.

The invention provides a composite solid positive electrode material and a preparation method thereof, a lithium ion battery and electric equipment, and relates to the field of lithium ion batteries. The composite solid positive electrode material comprises a positive electrode material and an organic elastic sphere which are uniformly mixed, the positive electrode material comprises an inner core, a metal compound coating layer and a boride coating layer, wherein the metal compound coating layer and the boride coating layer are sequentially arranged on the surface of the inner core; the raw materials of the organic elastomeric sphere comprise a hydrocarbon derivative monomer, an alkenyl monomer, an emulsifier, an oxidant and a solvent. The organic elastic sphere solves the problem of untight interface contact caused by volume change in the charging and discharging process of the solid-state battery positive electrode material; the inner core of the organic elastic sphere has certain rigidity, and the shell has high elasticity, so that the organic elastic sphere can be used as a rigid framework support and an elastic support to always keep close contact with the surface of a positive electrode material.

The application discloses a low-temperature preparation method of a high-wear-resistance boride layer on a GH4169 alloy surface, and belongs to the technical field of wear-resistant material preparation. By using a solid powder embedding boronizing technology and adjusting a boronizing agent (3%-6% KFB4, 10% ZrO2, and the rest being B4C), a high-hardness and high-wear-resistance boride layer with a thickness of about 8.2 microns is successfully prepared on the surface of a solid solution GH4169 nickel-based high-temperature alloy under low-temperature conditions of 800 DEG C. Compared with a traditional high-temperature boronizing process of the GH4169 alloy, the boronizing method can unify the aging process of the alloy heat treatment and the boronizing process, avoids a secondary heat treatment process after the high-temperature boronizing, and significantly improves the wear resistance of the GH4169 alloy. The preparation process of the boride layer is simple, the cost is low, and the boride layer with good quality and firm combination can be obtained.

The invention relates to a spectrum selective absorbing coating driven by anion and cation co-entropy engineering. The coating is composed of a polished stainless steel heat absorber substrate, a (HfZrTiTaMo) B absorbing layer and a Si3N4 antireflection layer. And the absorption layer is obtained by sputtering high-entropy boride targets with equal molar ratios under different parameters through radio frequency reaction magnetron sputtering. The preparation process is simple, the cost is low, the absorption rate of the prepared coating is larger than or equal to 0.91, the emissivity is smaller than or equal to 0.13 under the condition of the atmospheric quality factor AM1.5, and the coating has the good spectrum selection characteristic and has the important application value in the fields of solar photo-thermal power generation, photo-thermal sterilization, seawater desalination, water evaporation and deicing.

The invention discloses a directional solidification high-boron high-speed steel jet nozzle for oil field hydraulic power and a preparation method thereof, and belongs to the technical field of oil field exploitation equipment. The preparation method comprises the steps that raw materials such as electrical pure iron and micro-carbon ferrochrome are proportioned according to the specific mass fraction, and high-boron high-speed steel molten steel is obtained through vacuum melting; after the molten steel is subjected to rare earth aluminum desulfurization and temperature control, an as-cast blank is obtained through directional solidification treatment; and the cast blank is subjected to machining, austenitizing quenching, tempering heat treatment and fine polishing treatment, and a finished product is obtained. The finished product comprises a metal matrix and a directionally-arranged (Fe, Cr) 2B boride hard phase, alloy components are accurate and controllable, the hardness is 58.5-64.5 HRC, and the surface roughness is 0.25-0.40 mu m. The high-wear-resistance and high-brittleness high-wear-resistance and high-performance alloy nozzle has low cost and high performance, the problems that a traditional nozzle is poor in wear resistance, high in cost and large in brittleness are solved, the service life is remarkably prolonged, and the high-wear-resistance and high-brittleness high-wear-resistance and high-brittleness high-wear-resistance high-brittleness high-wear-resistance high-brittleness high-wear-resistance high-brittleness high-