50 results about "Co element" patented technology

The application discloses a kind of martensitic age steel of additive manufacturing and preparation method thereof, the martensitic age steel, according to mass percentage, its composition is as follows: Ni 16~22%, Co0-5%, Mo 2~6%, Ti 0.2~2.5%, Al 0~1.5%, Re 0~0.3%, wherein Re is selected from at least one of Y or La, the balance is Fe and inevitable impurities.In the application, by reducing Co element, adjusting the ratio of Ni, Ti and Mo in the alloy, while adding a small amount of rare earth (Y and La) element, the alloy has higher M s Under the premise, the raw material cost of alloy powder and the preparation cost of alloy are greatly reduced, and the fine equiaxed grains and high-density nano precipitates formed after aging are formed by combining with the process parameter control of additive manufacturing, so that the mechanical properties of the martensitic age steel are greatly better than those of the traditional casting process.

The invention relates to the technical field of high-entropy alloys, and discloses a high-entropy alloy with high mechanical property and high corrosion resistance and a preparation method thereof, the high-entropy alloy comprises Fe, Cr, Ni, Al and Si, the atomic ratio of Fe to Cr to Ni to Al to Si is 2: x: 1: 0.2: 0.3, and x is more than or equal to 1.22 and less than or equal to 1.26. Elementary substances corresponding to corresponding elements in the high-entropy alloy are used as raw materials, and the high-entropy alloy is obtained through smelting. The high-entropy alloy has excellent mechanical properties and corrosion resistance and is low in cost, no expensive Co element is added, Fe and Cr elements with relatively low cost are added, and the production cost is reduced.

The application belongs to the technical field of gas sensing material preparation, and discloses an Ag / AgCl modified Co3O4 nano-composite material, a preparation method and application, and comprises the following steps: dissolving inorganic compounds of Ag elements and inorganic compounds of Co elements in deionized water, adding a proper amount of NaCl solution first, then adding N2H4.H2O solution, and obtaining Ag / AgCl loaded alpha-Co(OH)2 nanosheet material by using coprecipitation and in-situ reduction method; and drying and sintering the Ag / AgCl loaded alpha-Co(OH)2 nanosheet material to obtain the Ag / AgCl modified Co3O4 nano-composite material. The application provides a preparation method of a low-temperature high-response gas sensing material, the prepared Ag / AgCl loaded Co3O4 material has higher ethanol gas response performance, can significantly reduce the optimal working temperature of the sensing material, has potential application prospect, and can be used for monitoring alcohol pollutant gases in atmospheric environment, chemical plant environment, home environment and the like.

A positive electrode active material, a preparation method thereof, a secondary battery, and an electric apparatus. The positive electrode active material includes a matrix and a coating layer at least partially covering the matrix. The positive electrode active material satisfies: W1>W2, where W1 is a mass content of Co element in the coating layer, and W2 is a mass content of Co element in the matrix, both based on a mass of the positive electrode active material.

The application relates to a feed for metal injection molding, a preparation method of the feed and a metal product, wherein the preparation method of the feed comprises the following steps: S1, obtaining the following components according to weight parts: 40-50 parts of Fe elements, 2-8 parts of Ni elements, 20-25 parts of Cr elements, 20-25 parts of Co elements, 2-8 parts of Mo elements, 2-8 parts of Cu elements, 0.1-3 parts of Si elements, 1-3 parts of Mn elements, mixing and then heating to melt the material, and then adopting a high-pressure water-gas combined atomization method to obtain mixed powder; S2, obtaining a forming agent; S3, preheating the mixed powder obtained in S1 under vacuum conditions, then adding the forming agent into the mixed powder for mixing, and then performing plasticizing extrusion granulation to prepare the feed. The feed can meet the size precision requirements of MIM injection, green compact degreasing sintering and related post-process machining, the existing MIM materials on the market cannot simultaneously meet the problem of high polishable hardness, and the obtained metal product has the comprehensive advantages of appearance and hardness.

The invention discloses copper alloy powder and a method for conducting printing repair on an aluminum bronze workpiece through the copper alloy powder, and belongs to the technical field of alloys and repair of the alloys. The alloy comprises 25-32% of Ni, 12-17% of Co, less than or equal to 1.8% of Mn and less than or equal to 2% of Si. O is less than or equal to 0.03%, and the balance is Cu. By preferably increasing the contents of Ni and Co elements, the wear resistance of the repaired surface and the bonding performance between the matrix and the additive repair layer are improved while the safety in the large-batch preparation and use process of the powder is ensured. The proportion of nickel and cobalt in the alloy is increased, the strength and hardness of the copper alloy can be improved, the nickel and the cobalt hinder dislocation movement in metal lattices through different micromechanisms, in other words, the nickel plays a role through solid solution strengthening, and the cobalt plays a role through precipitation strengthening.

This invention discloses a carbon nanotube / ZIF-67 derived Co-C / CNT catalytic membrane, its preparation method, and its application. The method involves acidifying carbon nanotubes to immobilize the growth of ZIF-67 on the carbon nanotubes. ZIF-67 serves as the Co source. The carbon nanotube / ZIF-67 composite material is first acidified, then ground with a eutectic mixture, and finally carbonized. This effectively inhibits the aggregation of Co elements in ZIF-67 during pyrolysis, achieving high dispersion of metal active sites while preventing metal ion leaching. This improves the catalytic activity of the Co-C / CNT catalytic membrane, achieving highly efficient PMS activation, effectively inhibiting the loss of Co active components, and preventing Co degradation. 2+ The problem of secondary heavy metal pollution caused by leaching.

The invention discloses a Ce-doped Co-MOF derived CuO composite oxide catalyst and a preparation method thereof, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps that S1, rare earth waste residues containing Ce elements and Co elements are obtained and treated, and a cerium salt solution and a cobalt salt solution are obtained; s2, the cerium salt solution and the cobalt salt solution are mixed with an organic ligand, and a Ce-Co-MOF precursor is prepared; s3, carrying out calcining and annealing treatment to obtain a Ce-Co-O porous composite oxide carrier; s4, preparing a copper salt solution, impregnating the Ce-Co-O porous composite oxide carrier with the copper salt solution, and then performing drying and calcining treatment to obtain a CuO-coated Ce-Co-O composite oxide; and S5, carrying out surface plasma activation treatment to obtain the Ce-doped Co-MOF derived CuO composite oxide catalyst. According to the invention, high-valued utilization of rare earth resources and precise structural regulation and control of catalytic materials can be realized, and the prepared catalyst can show excellent activity and stability in low-temperature CO oxidation reaction.

Embodiments of the present application provide a martensitic steel and a preparation method therefor, a structural member, and a terminal device. The martensitic steel provided in the embodiments of the present application comprises the Ni element, the Co element, the Mo element, the Nb element, the C element, the Fe element and other trace elements; on the basis of the total mass of the martensitic steel, the mass fraction of the Ni element is 14%-16%, the mass fraction of the Co element is 16%-18%, the mass fraction of the Mo element is 7%-10%, the mass fraction of the Nb element is 0.1%-0.6%, and the mass fraction of the C element is 0.003%-0.1%. On the basis of the element selection of the martensitic steel and the design of the content of each element, the martensitic steel can be prepared by means of a powder molding process such as metal injection molding, and the martensitic steel prepared by means of the described process can have high strength, good toughness, and a preset shape.

This invention relates to the field of battery anode material technology, specifically to Co-Sb composite hard carbon materials, their preparation methods, anode sheets, and applications. The method first combines a Co source and an Sb source to obtain a Co-Sb material. Then, based on the Co-Sb material as a core, organic carbon is deposited and coated, and finally carbonized to obtain the Co-Sb composite hard carbon material. This method is simple and easy to implement. Combining the electrocatalytically active Co element with Sb, and then combining it with carbon materials, is beneficial for the anode material to produce excellent electrochemical performance. As an anode material, this material can improve the problem of limited capacity in anode materials, enhance its reversible capacity, and simultaneously maintain excellent stability and good fast-charge and fast-discharge capabilities during charge-discharge cycles, thereby improving the overall electrical performance of the battery.

The invention provides a high-strength and high-conductivity copper-nickel-titanium-cobalt alloy and a short-process preparation method thereof, and belongs to the technical field of copper-based alloys. The alloy comprises the following components: 2.5%-3.5% of Ni; 0.8% to 1.2% of Ti; 0.3%-0.7% of Co; and the balance of Cu and inevitable impurities. The preparation method comprises the following steps: smelting and casting according to alloy components to obtain a cast ingot; and the cast ingot is sequentially subjected to homogenization treatment, hot rolling, cold rolling and aging treatment, the alloy is obtained, and the solid solution treatment step is omitted. Through microalloying of Co element, precipitation of a nanoscale strengthening phase (Ni, Co) 3Ti is promoted, and formation of an unfavorable phase is inhibited; and meanwhile, a short-flow process without solid solution treatment is adopted, and aging precipitation is directly driven by strain energy introduced by hot rolling and cold rolling. The alloy prepared by the method has high strength, high conductivity and good plasticity, is short in process flow and low in energy consumption, and is particularly suitable for the fields of lead frames in the field of electronic appliances and the like.

The invention relates to a composite chlorine evolution electrode and a preparation method and application thereof, and the preparation method comprises the following steps: placing a titanium-based material as a carrier in an anode, carrying out electro-deposition in a cobalt-ytterbium mixed salt solution, and calcining to obtain the composite chlorine evolution electrode. According to the composite chlorine evolution electrode provided by the invention, the active material simultaneously contains the Co element and the Yb element, the introduced Yb element can generate a synergistic effect with the Co element, the charge distribution around the Co element is adjusted, the conductivity of the composite chlorine evolution electrode is improved, the adjustment of the charge distribution and the improvement of the conductivity jointly optimize a chlorine evolution reaction mechanism, and the catalytic chlorine evolution activity is enhanced; the preparation method disclosed by the invention is simple, quick, green and efficient, low in raw material cost, low in manufacturing cost and suitable for large-scale production, and shows the potential of industrial large-scale application.

The invention provides a Fe-Mn-Al-Ni-based superelastic alloy and a preparation method thereof, and belongs to the technical field of iron-based superelastic alloys. The Co element is added, so that a gamma phase with high number density can be formed, after the gamma phase is heated to an alpha single-phase region, a sub-crystal structure with wide orientation distribution, high average orientation difference and number density is formed in alpha-phase crystal grains, abnormal growth of individual sub-crystals is caused, other sub-crystals in mother crystal grains are completely consumed by the sub-crystals which grow abnormally, and therefore the performance of the alloy is improved. A huge free energy gradient is formed between mother crystal grains and surrounding normal crystal grains with sub-crystals, so that a greater driving force is provided for the growth of abnormal crystal grains, and the growth process of the abnormal crystal grains is greatly shortened; by adding the Mo element, the width of the sub-grain low-density area can be increased, the time that the grain boundary crosses the sub-grain low-density area is prolonged, and therefore the number of abnormal grains is reduced, and the final size of the grains is increased.

The present invention discloses a high-performance sintered NdFeB magnet and a preparation method thereof. The high-performance sintered NdFeB magnet comprises raw materials for preparing the NdFeB magnet, including a main alloy and an auxiliary alloy, wherein the auxiliary alloy does not contain Fe and Co elements; the microstructure of the NdFeB magnet comprises a matrix phase and a rare earth-rich grain boundary phase, wherein the matrix phase is (RE / RE')2(F) 14 B, where F is Fe and Co, the Co content is 0-3, the mass ratio of Fe and RE / RE' in the rare earth-rich grain boundary phase is 1:(1.4-7), RE is Nd or PrNd, and RE' is one or more of Pr, Ho, Dy, and Tb. This NdFeB magnet has high magnetic properties.

The application provides a high-speed steel and a preparation method thereof, and the chemical components of the high-speed steel include the following in percentage by mass: C: 0.86-0.90%, Si: 0.20-0.45%, Mn: 0.20-0.40%, Cr: 7.00-7.50%, W: 5.00-5.50%, Mo: 1.70-2.20%, V: 1.50-1.90%, Co: 0.50-2.00%, and the balance is Fe and impurities. The high-speed steel is designed through alloy components, and through the organic cooperation of W+Mo, the Co element is added to improve the quenching property of heat treatment, the design principle of multi-element compound, and the mechanism of the precipitation and growth of different element carbides in the solidification process, so that the steel has excellent high wear resistance and high corrosion resistance.

The application discloses a Ce-doped Co-MOF derived CuO composite oxide catalyst and a preparation method thereof, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps: S1, obtaining rare earth waste residue containing Ce elements and Co elements, and processing the rare earth waste residue to obtain a cerium salt solution and a cobalt salt solution; S2, mixing the cerium salt solution and the cobalt salt solution with an organic ligand to prepare a Ce-Co-MOF precursor; S3, performing calcination and annealing treatment to obtain a Ce-Co-O porous composite oxide carrier; S4, preparing a copper salt solution, impregnating the Ce-Co-O porous composite oxide carrier with the copper salt solution, and then performing drying and calcination treatment to obtain a CuO@Ce-Co-O composite oxide; and S5, performing surface plasmon activation treatment to obtain the Ce-doped Co-MOF derived CuO composite oxide catalyst. The application can realize high-value utilization of rare earth resources and precise structure regulation of catalytic materials, and the prepared catalyst can exhibit excellent activity and stability in a low-temperature CO oxidation reaction.

The invention relates to a nickel-based single-crystal high-temperature alloy and a preparation method thereof, and relates to the technical field of nickel-based single-crystal high-temperature alloys, and the main technical scheme is as follows: the nickel-based single-crystal high-temperature alloy comprises the following chemical components in percentage by weight: 6-8 wt% of Cr, 7-9 wt% of Co, 2-3 wt% of Mo, 8-9 wt% of W, 5-7 wt% of Ta, 5-7 wt% of Al, 1-2 wt% of Ti, 0-0.05 wt% of C and the balance of Ni; wherein the sum of the percentage contents of the Co element, the W element and the Ta element is A; the sum of the percentage contents of the Mo element and the Cr element is B; wherein A / B is equal to 2.9 to 3.1. The invention mainly provides and prepares a nickel-based single-crystal high-temperature alloy, and the alloy has low gamma / gamma'phase interface energy and good long-term structure stability, and also has high-temperature mechanical properties obviously superior to those of typical second-generation Re-containing single-crystal high-temperature alloys.

The invention discloses a Co-C / CNT catalytic membrane derived from a carbon nano tube / ZIF-67, a preparation method and application, the growth of ZIF-67 on the carbon nano tube is fixed by acidifying the carbon nano tube, the ZIF-67 is used as a Co source, a carbon nano tube / ZIF-67 composite material is acidified firstly, then ground with a eutectic mixture, and finally carbonized, so that the Co element in the ZIF-67 is effectively inhibited from gathering in the pyrolysis process, and the Co-C / CNT catalytic membrane is prepared. According to the Co-C / CNT catalytic membrane, high dispersion of metal active sites is achieved, meanwhile, metal ion leaching is avoided, the catalytic activity of the Co-C / CNT catalytic membrane is improved, the efficient PMS activation effect is achieved, loss of Co active components is effectively inhibited, and meanwhile the problem of heavy metal secondary pollution caused by Co < 2 + > leaching is avoided.

The invention relates to a high-strength and high-plasticity easily-processed nickel-cobalt-based wrought superalloy and a preparation method thereof. The alloy comprises 18%-25% of Co, 11%-16% of Cr, 2.4%-3.4% of Al, 4.5%-6.5% of Ti, 0.8%-2% of W, 1.6%-3.2% of Mo, 0.5%-1.5% of Ta, 0%-1.5% of Nb, 0.001%-0.1% of C, 0.001%-0.05% of B, 0.001%-0.1% of Zr, 0-0.1% of Hf and the balance Ni, and the mass percent ratio of Al to Ti is smaller than or equal to 0.6. The sum of the mass percentages of W and Mo is 3-5%; the sum of the mass percentages of Nb and Ta is 0-2%; the ratio of the mass percent of the Co element to the mass percent of W + Mo is greater than or equal to 4; the ratio of the mass percent of the Al element to the mass percent of Nb + Ta is larger than or equal to 2, and the volume fraction of a gamma'strengthening phase of the high-temperature alloy is 40%-60%. The alloy element distribution in the gamma phase and the gamma'phase is adjusted through the reasonable element proportion, on one hand, the alloy has a large machining interval while the high gamma 'phase volume fraction is kept, and on the other hand, the alloy stacking fault energy is adjusted to make full use of the strengthening effect of the interaction effect of surface defects on the alloy.

The present disclosure relates to a cathode active material, a method of preparing the same, and a lithium secondary battery including a cathode including the cathode active material, the cathode active material including: a transition metal (M) other than a Co element, includes at least one element of W, Mg and Ti, and further includes an S element, a preparation method thereof, and a lithium secondary battery including a cathode including the cathode active material.

The application discloses a preparation process of B-Zr doped cobalt-based alloy powder and coating, and the alloy powder is composed of the following components with mass percentage: 90-95% of Stellite6, 1-5% of B and 1-5% of Zr. By introducing appropriate amounts of B and Zr elements into the Stellite6 alloy powder, the Zr and B elements synergistically alleviate the brittle boride to inhibit cracks, and synergistically form fine and dispersed ZrB2 and other stable high-hardness phases, promote the refinement of the structure, improve the hardness of the coating, and prevent B from forming a continuous network of brittle phases. The addition of the B element can also generate intermetallic compounds with Co elements and Cr elements, which have high hardness and high wear resistance, so that the overall strengthening layer hardness is improved. The finally formed high-hardness strengthening layer has a thickness of more than 0.5 mm and no cracks are generated. The hardness of the strengthening layer is more than 1100 HV, and the hardness of the strengthening layer can be more than 2-4 times of the substrate.

The application discloses a high-coercivity low-temperature-coefficient neodymium-iron-boron magnet and a preparation method and application thereof. The preparation method comprises the following steps: mixing a first alloy, a second alloy, a third alloy and a fourth alloy, and performing orientation compression, sintering and tempering heat treatment to obtain the high-coercivity low-temperature-coefficient neodymium-iron-boron magnet; wherein the first alloy is a Co-containing rare earth alloy. The preparation method can utilize the temperature compensation effect of heavy rare earth to improve the magnet saturation magnetization intensity within a certain temperature range, and the synergistic effect of Co elements is combined to obtain the high-coercivity low-temperature-coefficient neodymium-iron-boron magnet, which can meet the strict requirements of high-precision instrument and equipment field on the service stability of the neodymium-iron-boron material.

The invention discloses a process for separating and purifying waste powder (hereinafter referred to as Co-containing waste powder) formed by mixing pure Co powder and other pure metal powder for additive manufacturing. According to the technology, through the four-step technology of electromagnetic separation coarse screening, centrifugal separation semi-fine screening, high-gradient magnetic separation fine screening and electrolytic refining, efficient recovery of the Co element in the Co-containing waste powder for additive manufacturing is achieved. In the coarse screening stage, non-magnetic metal powder is removed through dry type / wet type electromagnetic separation; in the semi-fine screening stage, other magnetic metal powder except Co-Ni is removed through variable-speed centrifugal separation; in the fine screening stage, Ni powder is separated and removed through high-gradient magnetic separation; and the high-purity Co element is obtained through electrolytic refining in the purification stage. The problem that the Co-containing waste powder is difficult to recycle in BJAM, SLM, DED and other additive manufacturing technologies is solved, the purity of the recycled Co element is larger than or equal to 95%, cost and resource waste are remarkably reduced, and the method is simple in process, low in cost and suitable for large-scale application.

The invention provides a high-strength corrosion-resistant low-thermal-expansion self-lubricating material and a preparation process thereof. The high-strength corrosion-resistant low-thermal-expansion self-lubricating material comprises the following components in percentage by mass after optimization: 25-30% of Ni, 17-25% of Co, 1-2% of Cr, 8-10% of graphite and the balance of F. According to the low-expansion corrosion-resistant self-lubricating material and the preparation process thereof, a proper amount of Ni, Co and other elements are added into Fe, so that a metal matrix is a face-centered cubic structure solid solution, the thermal expansion coefficient is low, and corrosion resistance is achieved; the composite material is prepared through hot pressed sintering and pressureless re-sintering, so that the composite material has high strength, low thermal expansion coefficient, low dry friction coefficient, low wear rate and good salt spray corrosion resistance. The material has the potential of serving for a long time in a marine environment with heavy load and large temperature fluctuation.

This invention relates to the field of electrocatalytic materials technology, and discloses a Ni / Co co-doped Fe(OH)3 composite electrocatalytic material, its preparation method, and its application. The preparation method involves using Fe(NO3)3·9H2O as the iron precursor, and Ni(NO3)2·6H2O and Co(NO3)2·6H2O as Ni precursors, respectively. 2+ and Co 2+ The doping source was prepared into a mixed precursor solution; the cleaned conductive substrate was dried; then the conductive substrate was placed in the electrochemical reaction system for deposition, and after deposition, it was rinsed and dried. This invention, by introducing Ni and Co elements to synergistically regulate the electronic structure and surface properties of Fe(OH)3, improves the conductivity and active site density of the material, reduces the overpotential of the oxygen evolution reaction, and enhances the catalytic reaction kinetics, providing a new technical solution for developing high-performance non-noble metal electrocatalysts and reducing the cost of hydrogen production through water electrolysis.

The application discloses a kind of high tensile ductility and tensile strength can alloy and preparation method.The chemical formula of the can alloy is Fe v Ni w Co x Al y Ta z Wherein, 60 < v ≤ 70, 40 < w ≤ 50, 0 < x ≤ 10, 0 < y ≤ 10, 1 < z ≤ 5.The main element of preparation method is face-centered cubic Fe-Ni alloy.By introducing Co element in solid solution Fe-Ni for chemical control, obtain the can alloy with thermal expansion performance, but due to the low tensile strength of face-centered cubic solid solution.By introducing a small amount of Al and Ta element, intracrystalline precipitation coherent (Ni, Fe) 3 (Al, Ta) ordered phase, and then realize high tensile ductility and tensile strength.The synthesis steps of the high tensile ductility and tensile strength can alloy of the application are simple and easy to realize, and the raw material cost is low, realize the mechanical property and the thermal expansion attribute of can alloy.

The invention discloses a preparation process of B-Zr doped cobalt-based alloy powder and a coating. The alloy powder is prepared from the following components in percentage by mass: 90 to 95 percent of Stellite6, 1 to 5 percent of B and 1 to 5 percent of Zr. A proper amount of B and Zr elements are introduced into the Stellite6 alloy powder, the Zr and the B elements act synergistically to relieve brittle boride and inhibit cracks, fine and dispersed ZrB and other stable high-hardness phases are formed synergistically, structure refinement is promoted, the hardness of the coating is improved, B is prevented from forming a continuous net-shaped brittle phase, and the corrosion resistance of the coating is improved. An intermetallic compound generated by the element B, the element Co and the element Cr has high hardness and high wear resistance, so that the hardness of the whole strengthened layer is improved, the thickness of the finally formed high-hardness strengthened layer can reach 0.5 mm or above, no crack is generated, the hardness of the strengthened layer exceeds 1100 HV, and the hardness of the strengthened layer can reach 2-4 times or above of that of a matrix.

The present invention provides a grain boundary diffusion method for synchronously optimizing the coercive force and remanent magnetization temperature coefficient of a sintered NdFeB magnet. The method comprises the following steps: first, preparing a heavy rare earth element coating R1-A1 on the surface of a NdFeB magnet perpendicular to an orientation C-axis; R1 is at least one of Tb and Dy, and A1 is at least two of Al, Mg, Zn, Cu, Pr, and Nd; then preparing a Co element coating Co-A2 on the surface of the NdFeB magnet parallel to the orientation C-axis; A2 is at least two of Gd, Nd, Al, Mg, Zn, and Cu; after the heavy rare earth element coating R1-A1 and the Co element coating Co-A2 are prepared, the NdFeB magnet perpendicular to and parallel to the orientation C-axis is heat treated. The present invention has a reasonable concept, can achieve synchronous optimization of the coercive force and remanent magnetization temperature coefficient of a sintered NdFeB magnet, and is suitable for promotion and application.

This invention relates to the field of Fe-Ni alloy technology, and more particularly to an Fe-Ni alloy, its preparation method, and its applications. The chemical composition of the Fe-Ni alloy, by weight percentage, consists of the following elements: Ni: 30.0~35.0%, Co: 0.5~4.0%, Cu: 0.4~2.0%, Mn: 0.2~0.5%, Si: 0.2~0.5%, Ti: 0.1~0.3%, Ce: 0.01~0.1%, C: ≤0.05%, with the balance being Fe and other unavoidable impurities. By adjusting the content of Ni and Co elements, and through multi-element alloying design, as well as controlling subsequent processing techniques, a thermal expansion coefficient of 3~6×10⁻⁶ is obtained in the temperature range of -40℃ to 100℃. ‑6 / K is a Fe-Ni alloy with certain strength and lower production cost.

This invention discloses an alloy powder for laser additive repair of beryllium bronze and its additive repair method, belonging to the field of laser additive repair. The alloy powder composition is Ni 29-33%, Co 10-15%, Fe≤0.9%, Mn≤1.2%, O≤0.03%, with the balance being Cu. This invention optimizes the content of Ni and Co elements by increasing their content and eliminating Be elements, ensuring safety during large-scale powder preparation and use, while improving the wear resistance of the repaired surface and the bonding performance between the substrate and the additive repair layer. The repair process of this invention utilizes a small-diameter spot, high-energy-density laser additive repair to effectively reduce the heat-affected zone, minimize deformation, and improve repair quality. The method of this invention significantly reduces the repair cycle.