14 results about "Fe element" patented technology

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 application provides a copper alloy, a preparation method thereof and an elastic electronic component, and relates to the technical field of copper alloys.The copper alloy comprises the following elements in percentage by mass: the content of Ti element is 2.70-4.20%, the content of Y element is 0.010-0.030%, the content of La element is 0.010-0.030%, the content of B element is 0.010-0.020%, the total content of unavoidable impurities is less than or equal to 0.01%, and the balance is Cu element and M element; wherein, the M element is Fe element or P element, when the M element is Fe element, the content of Fe element is 0.28-0.45%, and when the M element is P element, the content of P element is 0.05-0.15%. The copper alloy has excellent tensile strength, hardness, elastic modulus and conductivity.

This invention provides a method for steel / aluminum butt brazing joints based on grid control, belonging to the field of dissimilar material welding. The method includes: spot welding a steel grid to the back of the area to be welded on a steel plate; applying flux and then clamping the aluminum alloy plate butt-welded to the steel plate; performing brazing using a laser-MIG composite heat source; feeding welding wire into the molten pool and adding an additional cold wire. During welding, the back grid partially dissolves to provide Fe element and utilizes capillary action to promote the spread of molten aluminum to the back side. The cold wire absorbs heat to compensate for the metal on the front side. Together, these two elements create a uniform intermetallic compound layer on the front, sides, and back of the joint, achieving a large back weld width and a full front weld height. Using this method, the joint's positive and negative bending angles both reach 180° without failure, significantly improving the bending performance of the steel / aluminum butt brazing joint.

The application provides a two-dimensional Cu x Fe y Te crystal thin film and a preparation method thereof, and the method comprises the following steps: S1, selecting Cu, Fe and Te precursors, and pretreating a substrate; S2, mixing Cu and Fe, placing the mixed Cu and Fe in a first carrier, placing the Te precursor in a second carrier, and respectively arranging the first carrier, the second carrier and the substrate in corresponding areas of a CVD reaction device; S3, performing airtightness detection and carrier gas treatment on the CVD reaction device, and heating under the carrier gas condition to make the precursors sublimate and transport; S4, performing heat preservation growth under a preset temperature and the carrier gas condition to make the sublimated precursors react and deposit on the surface of the substrate; and S5, after the growth is completed, cooling the CVD reaction device to room temperature under an inert atmosphere, and obtaining a two-dimensional Cu x Fe y Te crystal thin film. Through regulation and control of the use amount ratio of the Cu, Fe and Te precursors and process parameters, the application realizes the synergistic transport and controllable deposition of the multi-element precursors, and prepares the two-dimensional Cu x Fe y Te crystal thin film with adjustable Cu / Fe element ratio and good crystallization quality.

The application discloses an Al-Fe-Mn heat-resistant high-strength rare earth reinforced aluminum alloy and a preparation method thereof, and belongs to the field of additive manufacturing technology.The aluminum alloy comprises Fe, Mn, Y, Sm, Er, V and Si in a mass percentage of 0.5-3 wt%, 0.5-2 wt%, 0.01-0.3 wt%, 0.05-0.2 wt%, 0.01-0.1 wt%, 0.01-0.3 wt% and 0.02-0.5 wt% respectively, and the balance is Al.The Y, Sm and Er rare earth elements are added to maintain the high-temperature stability of Al-TM particles, and the Mn and Fe elements are added to form a large number of dispersed distribution and heat-stable precipitated phases under the condition of the rapid cooling of 3D printing, so that the heat-resistant performance of the aluminum alloy is improved, and the solid solution strengthening effect can be achieved, and the problem of low solid solubility of a traditional Al-TM alloy is solved.

The application discloses a heat treatment process of a thermodynamic auxiliary design Cu-Ni-Fe alloy, and belongs to the technical field of copper alloy heat treatment. The application constructs a thermodynamic model of the Cu-Ni-Fe alloy through first principle calculation, accurately matches the Fe element addition amount and heat treatment process parameters based on thermodynamic calculation, and realizes accurate regulation and control of the alloy organization and performance through steps such as homogenization, solid solution, quenching, grading aging, performance feedback closed loop optimization and the like. The application solves the problems of high development trial and error cost and poor strength and plasticity matching of the traditional Cu-Ni-Fe alloy, the prepared alloy has a tensile strength greater than 1000 MPa and a total elongation at break greater than 43%, and can be widely applied in the field of ocean engineering.

The application discloses a Cu-Fe additive piece based on a wire-based directed energy deposition laminated structure and a preparation method and application thereof, Cu welding wire and Fe welding wire are alternately deposited on a substrate by wire-based directed energy deposition technology to obtain a laminated structure Cu-Fe additive piece; the proportion of Cu and Fe elements in the additive piece is regulated by controlling the wire feeding speed, the fusion condition of the Cu and Fe deposition layer interface layer and the transition of alloy elements are regulated by controlling the welding current and voltage; the prepared Cu-Fe alloy additive piece has higher strength, hardness and electrical conductivity; the Cu-Fe additive piece prepared by using the wire-based directed energy deposition technology can solve the problem of performance decline caused by material metallurgical incompatibility in other preparation processes; compared with other additive processes, the Cu-Fe additive piece has the characteristics of relatively high deposition rate, low cost and small size limitation, and has great potential in building large structural parts with complex structures.

The application provides a brazing process of an aluminum alloy material for brazing. The material of a runner plate used in the brazing process is an aluminum rare earth material, which comprises, in percentage by mass, 7.0-9.0% of a rare earth metal element RE, 0.4-0.6% of an Fe element, 0.6-1.2% of an Mn element, 0.3-0.5% of a Cr element, 0.02-0.15% of an Mg element, 0.1-0.2% of a Ti element, 0.02-0.2% of a V element, 0.02-0.1% of a B element, ≤0.1% of an Si element, ≤0.01% of a Cu element, the balance of an Al element and inevitable impurities, and ≤0.05% of a single impurity element. After brazing by the brazing process, the weld is full and has high strength, and the brazing process is suitable for brazing of runner plates with various complex structures.

This invention relates to the field of laser cladding wear-resistant alloy technology, and discloses a titanium carbide alloy wear-resistant coating for non-magnetic oil drill collars and its preparation method. The coating includes a composite alloy powder comprising titanium carbide powder and NiCrMoFeCu nickel-based alloy powder mixed in a specific ratio; and a CrMnN non-magnetic stainless steel substrate disposed at the bottom of the composite alloy powder to support the composite alloy powder being simultaneously laser-clad. By selecting nickel-based alloy powder containing Mo and Fe elements and mixing it with titanium carbide powder in a specific ratio, a composite alloy powder for laser cladding is prepared. Combined with a simultaneous laser cladding process, the prepared wear-resistant coating achieves a relative permeability of less than 1.005, far exceeding the API 7-1 standard requirement that the relative permeability of non-magnetic drill collars must be less than 1.01, effectively solving the problem that coatings prepared by conventional processes often fail to meet the non-magnetic index.

The present application belongs to the technical field of recycled aluminum alloy materials, and particularly relates to a recycled aluminum iron-rich phase alloy material and a method for regulating and controlling the preparation thereof. The method constructs a technical system of "precise regulation and control of Si content - directional transformation of iron-rich phase - synergistic optimization of mechanical properties", effectively solving the core problem of recycled aluminum production and performance improvement. In the system of 75% to 85% recycled material ratio, the mass fraction of Si is regulated to 0.5% to 0.9%, and recycled aluminum is prepared through a specific smelting process. Through the synergistic effect of Si and Fe elements, the iron-rich phase is transformed from the harmful needle-shaped β-Al5FeSi phase to the beneficial block-shaped and bone-shaped α-Al 15 Fe3Si2 phase, and the size of the iron-rich phase is reasonably regulated and controlled to improve the performance of the aluminum alloy. The method can make the Brinell hardness of the recycled aluminum reach 30 HB to 32.69 HB and the elongation rate reach 12.9% to 14.1% when the recycled material ratio is 75% to 85% and the Si content is 0.7% to 0.9%, significantly improving the comprehensive mechanical properties of the alloy. The method is simple, low in cost, and strong in operability, and is suitable for industrial production.

The application provides a low-cost high-toughness aluminum alloy material and a preparation method thereof. The aluminum alloy material comprises the following components in percentage by mass: Si 9.0-10.0%, Mg 0.4-0.6%, Fe 0.55-0.7%, Mn 0.4-0.5%, Cu 0.25-0.32%, Zn 0.2-0.4%, Ti 0.02-0.04%, Sr 0.02-0.04%, the balance of Al and inevitable impurities, and the total content of the inevitable impurities is less than 0.25%. The aluminum alloy reduces the content of noble metal elements such as Cu, adopts low-cost alloy elements such as Si, Mg and Mn, allows a high Fe element content to adapt to the preparation of the alloy by using recycled aluminum raw materials, simultaneously uses Sr to modify the silicon phase in the alloy, and adds Ti elements to refine the alloy organization. The content of Si, Fe and Mn elements in the alloy satisfies 0.075*Si content-0.05%>=Fe content, and Fe+Mn>=1.0%. The obtained alloy can be used for high-pressure casting, low-pressure or differential-pressure casting processes, and can be simultaneously used for the production of high-pressure cast automobile suspensions and low-pressure or differential-pressure cast calipers, and has excellent strength and toughness.

The objective is to provide a soft magnetic material in powder form that exhibits high magnetization, low coercivity, and low eddy current loss. [Solution] Core-shell particles having a core and a shell made up of two or more crystallites: The core portion has oxide grain boundary layers between crystallites. The crystallite consists of Fe element or Fe element and M element (M element is one or more elements selected from the group consisting of Co, Ni, Cu, Zn, Sn, Ga, Sn, Pb, and Bi); The shell is porous, made of oxide, and covers the entire surface of the core; and, The oxide in the oxide grain boundary layer within the core and the oxide in the shell are the same oxide and contain either a rare earth element R or a rare earth element R and element T (the rare earth element R is one or more elements selected from the group consisting of Y and lanthanide elements, and element T is one or more elements selected from the group consisting of Al, Si, Ti, V, Cr, Zr, Nb, Mo, Mn, Hf, Ta, and W).

The application provides an aluminum alloy comprehensive modifier and a preparation method thereof. The modifier comprises an Al matrix, TiC x seeds and a second phase in the Al matrix, wherein the second phase comprises Al and a transition metal element, the TiC x seeds comprise a first TiC x seed with a sub-micron scale and a second TiC x seed with a nanometer scale, at least a part of the first TiC x seed is dispersed in the Al matrix, and at least a part of the second TiC x seed is coated by the second phase, wherein x satisfies x < 1. The modifier can modify an Fe-rich phase in an aluminum alloy containing an Fe element and refine an α-Al phase.

The application discloses an Fe-induced CoMoO4 partial oxidation electrocatalyst, a preparation method and application, and belongs to the technical field of hydrogen evolution of electrocatalytic materials. A cobalt source, a molybdenum source and an iron source are dissolved in water to form a uniform mixed solution; the mixed solution is transferred to a reaction kettle, pretreated foamed nickel is added, and hydrothermal reaction is carried out at 100-150 DEG C for 4-12 h; after the reaction is completed, the foamed nickel loaded with the catalyst is taken out, washed and dried to obtain the Fe-induced CoMoO4 partial oxidation electrocatalyst. The crystal structure and surface morphology of CoMoO4 are regulated and controlled through doping of the Fe element, the OER catalytic activity and stability of CoMoO4 are improved, the cost of water electrolysis hydrogen production is reduced, and industrial application is promoted.