40 results about "Binary alloy" patented technology

The application discloses an accident-tolerant nuclear fuel cladding coating and a preparation method and application thereof, and belongs to the technical field of nuclear fuel cladding coating. The coating is a Cr-based binary alloy coating deposited on the surface of a zirconium alloy base, and is selected from Cr-Fe, Cr-V or Cr-Mo alloy coatings, wherein the content of Fe is 3-10 wt%, the content of V is 3-20 wt%, and the content of Mo is 1-5 wt%. The preparation method adopts a magnetron sputtering process, and is realized by controlling parameters such as vacuum degree, temperature, gas pressure, bias voltage and power. Through alloying, the application effectively inhibits the element interdiffusion between the coating and the zirconium alloy base at high temperature, reduces the formation of brittle intermetallic compounds and Kirkendall holes, significantly improves the thermal stability and service life of the coating under accident conditions, meanwhile, the process is mature, the coating quality is high, and the coating is suitable for surface protection of zirconium alloy fuel cladding of nuclear power stations.

The application provides a magnesium-gadolinium binary alloy fuel powder and a preparation method and system thereof. The mass content of gadolinium in the magnesium-gadolinium binary alloy fuel powder is 6-30%, the density is 2.11-3.59 g / cm 3 , and the mass heat value is 20.01-24.06 kJ / g. The preparation method comprises the following steps: under the condition of argon positive pressure, melting the metal containing magnesium and gadolinium in a manganese steel crucible smelting furnace, conveying the obtained magnesium-gadolinium binary alloy liquid to a tightly coupled gas atomization tank for atomization through a stainless steel conveying pipe, and obtaining the magnesium-gadolinium binary alloy fuel powder after screening. The system comprises a smelting furnace, a tightly coupled gas atomization tank, a liquid conveying pipeline, a mechanical screening machine, an air flow sorting machine and a high-pressure argon tank. The application solves the phase segregation caused by the high density difference between magnesium and gadolinium in the magnesium-gadolinium alloy atomization powder preparation, and the safety problem caused by the volatility of magnesium, and the prepared magnesium-gadolinium alloy powder has a uniform metallographic structure and no serious segregation.

A magnetoresistive random-access memory cell includes a templating layer, including a binary alloy having an alternating layer lattice structure, and a half metallic Heusler multilayer structure including a plurality of layers of two different Heusler compounds, at least one of which is half metallic. The half metallic Heusler multilayer structure is located outward of the templating layer and exhibits perpendicular magnetic anisotropy (PMA). A tunnel barrier is outward of the half metallic Heusler multilayer structure, and a magnetic layer is outward of the tunnel barrier.

The invention provides a method for detecting the content of zinc in a lithium-zinc binary alloy strip based on ICP-OES, and belongs to the technical field of metal material component analysis. According to the method, the lithium matrix is separated by adopting a nitric acid-perchloric acid digestion system, and the stock solution is diluted by 500 times, so that the concentration of the lithium matrix can be efficiently reduced, meanwhile, the signal inhibition effect is effectively eliminated by combining lithium salt matching, and the detection precision is greatly improved. According to the method, Zn 213.856 nm analysis spectral lines are carefully selected, RF power is optimized, spectral interference of other elements can be avoided, the linear range can be expanded, and the method is suitable for rapid determination of the zinc content of 1%-20%. According to the method, the detection limit can reach 0.01%, the relative standard deviation is smaller than or equal to 1.0%, the recovery rate is 98.5%-101.2%, and high-precision detection is achieved.

The application discloses a preparation method of high-strength Mg-Gd binary alloy rod material, comprising the following steps: alloy smelting: preparing Mg-Gd alloy; solid solution treatment: carrying out solid solution treatment on the Mg-Gd alloy obtained by smelting; preliminary extrusion: extruding the Mg-Gd alloy blank after the solid solution treatment at 380-440 DEG C, the extrusion ratio is 6-12, the extrusion speed is 0.2-2 mm / s, and a preliminary extrusion rod material is obtained; secondary extrusion: extruding the preliminary extrusion rod material at 300-340 DEG C, the extrusion ratio is 4-9, the extrusion speed is 0.1-1 mm / s, and a secondary extrusion rod material is obtained; aging treatment: aging the secondary extrusion rod material to a peak aging state, and high-strength Mg-Gd binary alloy rod material is obtained. According to the preparation method, the aging type Mg-Gd binary alloy rod material with high strength and good plasticity is obtained.

The invention relates to the technical field of alloy raw material mixing, and discloses a NiB binary alloy raw material mixing device, the raw material mixing device comprises a reaction kettle, a stirrer and a filler port, the stirrer is installed at the bottom of the reaction kettle, stirring and mixing are generated in the reaction kettle, the filler port is formed in the side wall of the reaction kettle, and the filler port is communicated with the stirrer. A temperature control assembly capable of switching heating and cooling is arranged on the outer side of the reaction kettle, a temperature control system capable of switching a circulating medium is constructed on the outer side of the reaction kettle on the basis of the jacket, and compared with a single temperature control medium in conventional equipment, a very stable effect can be achieved during temperature control; the chemical nickel plating process requiring accurate temperature change is more friendly, in addition, the setting form that the jacket wraps the medium for temperature conduction is adopted, so that the acting part is very uniform during temperature control, more accurate temperature control can be provided, and good product production is ensured.

The present invention relates to a catalyst system comprising more than one catalyst network, wherein at least one of the catalyst networks contains at least one noble metal wire consisting of a binary PtRh alloy. The binary PtRh alloy consists of 3.4-4.6 wt. % of rhodium, impurities and the remainder platinum. The catalyst system does not comprise a catalyst network containing a noble metal wire made of a further binary PtRh alloy comprising more than 7 wt. % of rhodium. The invention also relates to a method for the catalytic oxidation of ammonia, in which a catalyst system according to the invention is used.

The application discloses a strain-induced supersaturated solid solution analysis method for a non-miscible alloy system based on mixed entropy evolution, and the method comprises the following steps: for a target A-B binary alloy, a mixed entropy-component relationship diagram of the target A-B binary alloy is drawn; the average component and the initial equilibrium phase component point of the target A-B binary alloy are calibrated in the diagram; based on the increase of the mixed degree of the entropy generation driving force, the two-phase components are predicted to evolve in the entropy increase direction during a severe plastic deformation process, until a single-phase supersaturated solid solution is formed. Based on the irreversible thermodynamic principle, the severe plastic deformation process is defined as a continuous external entropy generation source for driving the evolution of the system, through the analysis of the dynamic competition mechanism of element mixing and element demixing dominated by the entropy generation source, the formation mechanism of the supersaturated solid solution is revealed, and the application provides a universal theoretical tool for understanding and predicting the supersaturated solid solution behavior of the non-miscible alloy system under the severe plastic deformation.

The application discloses a self-lubricating porous copper-based oil-containing bearing material and a preparation method, application and bearing containing the material thereof, and the preparation method comprises the following steps: material pretreatment: reducing and drying treatment is performed on copper-tin binary alloy powder; mold pressing and sintering forming: the pretreated copper-tin binary alloy powder is sequentially subjected to mold pressing preforming and near-melting-point sintering treatment, and a porous copper-tin binary alloy blank is obtained; borax immersion treatment: the blank is placed in a container containing a borax aqueous solution, and is sequentially immersed under vacuum and normal pressure conditions, and is dried and solidified, so that a borax film is formed on the inner wall of the pores of the blank; gradient solid solution treatment: the blank after the borax immersion treatment is subjected to two-stage temperature rising heat treatment in a protective atmosphere, and is rapidly cooled to room temperature, and a self-lubricating porous copper-based oil-containing bearing material is obtained, the preparation method is simple and efficient, the heat energy consumption is greatly reduced, and the prepared bearing material has a stable porous gap structure and has the characteristics of self-lubrication and high strength and toughness.

A magnetoresistive random-access memory cell includes a templating layer. The templating layer includes a binary alloy having an alternating layer lattice structure. The cell further includes a half metallic Heusler layer including a half metallic Heusler material having a tetragonal lattice structure. The half metallic Heusler layer is located outward of the templating layer, and has a Heusler in-plane lattice constant that is different from an in-plane lattice constant in a cubic form of the half metallic Heusler material. A tunnel barrier is located outward of the half metallic Heusler layer, and a magnetic layer is located outward of the tunnel barrier.

A spark plug electrode made of a ruthenium-based material having one or more of the following properties: an equiaxed grain structure, a grain structure having an average grain size of less than or equal to 50 [mu] m, a grain structure having an average porosity of less than or equal to 2%, and / or a grain structure having an average non-uniformity ratio of less than or equal to 6%. In one example, the ruthenium-based material is a binary alloy comprising, by weight, from 1% to 15% of rhodium and the balance ruthenium. In various examples, the ruthenium-based material is a ternary alloy that includes from 1 wt% to 15 wt%, including an end value, rhodium, from 0.5 wt% to 5 wt%, including an end value, rhenium, and a balance of ruthenium. The invention further provides a powder metallurgy method for manufacturing the spark plug electrode.

This invention belongs to the technical field of lead-free solder powder for electronic soldering. The invention discloses a graphene-coated copper-tin composite solder powder and its preparation method. The core phase is a CuSn binary alloy powder, with a Cu content of 0.5~1.0 wt% and the balance being Sn; the D50 particle size is 15~45 μm, approximately spherical, and the loose packing density is 4.8~5.2 g / cm³. 3，壳相：少层还原氧化石墨烯，连续致密包覆层厚度 The graphene coating is 0.8~3.0nm, with a coating amount of 0.03~0.22wt% (based on the total mass of the composite solder powder). The interface is that the core phase and the shell phase are covalently bridged by silane coupling agent, with a coating integrity rate of ≥95%. The graphene does not agglomerate or fall off, and it plays a stable role in the reflow soldering process. The wettability, solder joint strength, and thermal fatigue performance of the solder powder reach or exceed those of SAC305 silver-containing solder powder. The process conditions are mild, highly controllable, and have good repeatability, making it suitable for large-scale industrial production. Moreover, the preparation process is environmentally friendly and generates no harmful waste.

A neuromorphic computing array includes horizontal lines and vertical lines, with the vertical lines intersecting the horizontal lines at cell locations. Magnetic tunnel junction cells are located at the cell locations. Each cell is electrically connected to a corresponding horizontal line and a corresponding vertical line. Each cell includes a substrate (1401), a seed layer (1403) covering the substrate, and a nitride layer (1403A) covering the seed layer (optionally, the nitride layer has a thickness greater than 5 angstroms). Each cell also includes a template layer (1403B) located outside the nitride layer, the template layer comprising a binary alloy having an alternating layered lattice structure and having a thickness greater than 50 angstroms. Each cell also includes a first magnetic layer (1405) covering the template layer, a tunnel barrier (1409) located outside the first magnetic layer, and a second magnetic layer (1411) located outside the tunnel barrier. The first magnetic layer (1405) comprises a Hessler alloy and exhibits perpendicular magnetic anisotropy (PMA).

The application relates to the field of metallurgical and plastic processing of biomaterials, and provides a biodegradable Zn-Mg binary alloy and a preparation method and application thereof. The biodegradable Zn-Mg binary alloy is prepared by adopting a method of smelting-semi-continuous casting-forging-rolling-reverse extrusion and taking metal Zn and Zn-Mg intermediate alloy as raw materials. The Zn-Mg binary alloy prepared by the application has good mechanical properties, and the strength and ductility can meet the requirements of medical implant devices. Meanwhile, the Mg is added in the form of Zn-Mg intermediate alloy, so that the burning loss of the Mg can be effectively controlled, and the uniformity of the alloy composition and structure is improved. Further, high-purity raw materials are selected, and high-purity graphite crucibles are adopted for smelting, so that the heavy metal content in the Zn-Mg binary alloy is effectively controlled, the contents of Pb, As and Cd reach the standard of drinking water, and the safety of the Zn-Mg binary alloy implant in the body is ensured.

The invention relates to the technical field of metallurgy and plastic processing of biological materials, and provides a biodegradable Zn-Mg binary alloy and a preparation method and application thereof. The biodegradable Zn-Mg binary alloy is prepared by taking metal Zn and Zn-Mg intermediate alloy as raw materials and adopting a smelting-semi-continuous casting-forging-rolling-backward extrusion method, the prepared Zn-Mg binary alloy is good in mechanical property, and the strength and the ductility can meet the requirements of medical implantation instruments; meanwhile, Mg is added in the form of Zn-Mg intermediate alloy, the burning loss amount of Mg can be effectively controlled, and the uniformity of alloy components and structures is improved. Furthermore, high-purity raw materials are selected, a high-purity graphite crucible is adopted for smelting, the content of heavy metal in the Zn-Mg binary alloy is effectively controlled, the content of Pb, the content of As and the content of Cd reach the standard of drinking water, and therefore the safety of the Zn-Mg binary alloy implanted into a body is guaranteed.

The present application relates to the field of light metal alloy smelting. To meet market requirements for high-quality large ingots of magnesium-lithium (Mg-Li) and aluminum-lithium (Al-Li) alloys, the present application provides a preparation process for high-quality Mg-Li and Al-Li alloys with large melting capacity under atmospheric pressure. First, a Li-Mg binary alloy element is prepared by means of a reduction reaction between a lithium salt and oxides of Ca, Mg and Al, and the Li-Mg binary alloy element is melted with a magnesium ingot or an aluminum ingot under atmospheric pressure to obtain a corresponding Mg-Li or Al-Li alloy. According to the method of the present application, high-quality Mg-Li and Al-Li alloy large castings can be prepared under atmospheric pressure, and moreover, the yield of lithium is improved. Metal lithium produced by electrolysis is not used as a raw material for preparing the Mg-Li or Al-Li alloy, thereby avoiding the pollution caused by chlorine generated by conventional lithium electrolysis.

The present invention relates to a composite having the advantages of economy, excellent catalyst activity, and significantly improved stability compared to conventional pure platinum catalysts, and specifically, the composite according to the present invention includes: a carbon support; and a binary alloy loaded on the carbon support and containing platinum (Pt) and an alkaline earth metal, wherein, in a Pt 4f XPS spectrum of the binary alloy based on X-ray photoelectron spectroscopy (XPS), E1 and E2 defined by the following Formula 1 and Formula 2 satisfy the following Formula 3. (Formula 1) E1 = E0 - E0(ref) (Formula 2) E2 = EII - EII(ref) (Formula 3) E1 / E2 ≤ 0.85, in Formula 1 and Formula 2, E0(ref) and EII(ref) are binding energies (centers) of a Pt(0) peak and a Pt(II) peak, respectively, in a Pt 4f XPS spectrum of pure platinum (Pt), and E0 and EII are binding energies (centers) of a Pt(0) peak and a Pt(II) peak, respectively, in a Pt 4f XPS spectrum of the binary alloy.

The invention discloses a composite substrate, a negative electrode and an all-solid-state battery. The composite substrate includes a polymer layer, a first nickel alloy layer on a first surface of the polymer layer, and a second nickel alloy layer on a second surface of the polymer layer. At least one of the first nickel alloy layer and the second nickel alloy layer includes a nickel-iron binary alloy.

The present invention relates to a method for forming a noble metal binary alloy thin film by atomic layer modulation (ALM). For the platinum-ruthenium alloy thin film according to the present invention, an alloy thin film is provided in which two elements are completely mixed by using dimethyl (N,N-dimethyl-3-butan-1-amine-N) platinum (DDAP: C8H19NPt) as a platinum precursor, tricarbonyl (trimethylene methane) ruthenium ([Ru(TMM) (CO)3]) as a ruthenium precursor, and oxygen as a reaction gas. The present invention makes it possible to form a platinum-ruthenium alloy thin film in which precise compositional control is achieved at the atomic level.

The present invention relates to a composite that is-cost-effective, has an excellent catalytic activity, and significantly improves stability compared to a pure platinum catalyst according to the related art. Specifically, the composite according to the present invention contains a carbon support and a binary alloy consisting of platinum and an alkaline earth metal supported on the carbon support which satisfies a specific condition in a Pt 4f X-ray photoelectron spectroscopy (XPS) spectrum of the binary alloy.

A kind of preparation method of high-toughness super-hydrophilic titanium-zirconium alloy dental implant, comprising the following steps: step 01, preparation of titanium sponge and zirconium sponge;Step 02, Ti-Zr binary alloy ingot is melted by using vacuum melting furnace;Step 03, heat preservation of Ti-Zr binary alloy ingot;Step 04, Ti-Zr binary alloy ingot is opened by using free forging process;Step 05, equal-diameter angular extrusion of Ti-Zr binary alloy ingot blank;Step 06, the blank is soaked in etching liquid for 6-12 hours, and then surface finishing and cleaning are carried out;Step 07, mechanical treatment is carried out on the blank;Step 08, Ti-Zr binary alloy rod is finely ground, and the implant semi-finished product is obtained after machining by the heart machine, and then sand blasting treatment is carried out after cleaning and drying;Step 09, super-hydrophilic acid etching treatment is carried out on the implant semi-finished product after sand blasting. It has good biocompatibility, good bone bonding performance and excellent mechanical properties.

Metastable alloys have recently emerged as high-performance catalysts, extending the toolbox of binary alloy materials that can be utilized to mediate electrocatalytic reactions. In particular, nanostructured metastable ordered intermetallic compounds are particularly challenging to synthesize. Here the present invention is directed to a method for synthesizing sub-15 nm metastable ordered intermetallic Pd31Bi12 nanoparticles at room temperature, in a single step, by pulsed electrochemical deposition onto high surface area carbon supports. The resulting Pd31Bi12 nanoparticles displays a 7× enhancement of the mass activity relative to Pt / C and a 4× enhancement relative to Pd / C for the oxygen reduction reaction (ORR). The high performance of Pd31Bi12 nanoparticles is demonstrated to arise from reduced oxygen binding caused by alloying of Pd with Bi. The isolation of Pd-sites from each other facilitate methanol tolerant ORR behavior.

A spark plug electrode made of a ruthenium-based material having one or more of the following properties: an equiaxed grain structure, a grain structure having an average grain size of less than or equal to 50 [mu] m, a grain structure having an average porosity of less than or equal to 2%, and / or a grain structure having an average non-uniformity ratio of less than or equal to 6%. In one example, the ruthenium-based material is a binary alloy comprising, by weight, from 1% to 15% of rhodium and the balance ruthenium. In various examples, the ruthenium-based material is a ternary alloy that includes from 1 wt% to 15 wt%, including an end value, rhodium, from 0.5 wt% to 5 wt%, including an end value, rhenium, and a balance of ruthenium. The invention further provides a powder metallurgy method for manufacturing the spark plug electrode.

Disclosed are composite substrates, negative electrodes, and all-solid-state batteries. The composite substrate includes a polymer layer, a first nickel alloy layer on a first surface of the polymer layer, and a second nickel alloy layer on a second surface of the polymer layer. At least one of the first and second nickel alloy layers includes a nickel-iron binary alloy.

The invention relates to a dynamic evolution simulation method and system for an aluminum alloy high-solid-phase rheo-die-casting microstructure, and belongs to the technical field of aluminum alloy material solidification numerical simulation and calculation material science. The simulation method comprises the following steps: (1) establishing a rheo-die-casting whole-process model, and constructing a control equation set of a coupling phase field and a solute field by adopting a quantitative phase field model framework; a macroscopic temperature field is obtained through multi-scale parameters, thermodynamic parameters are coupled and called in real time, secondary alpha2-Al phase nucleation in the second-stage rheology die-casting forming process is simulated through a spontaneous nucleation calculation method, and numerical solution and visualization are conducted; (2) setting boundary conditions; (3) solving an equation; and (4) data processing. The invention also discloses a simulation system. According to the method, whole-process dynamic simulation is achieved for the first time, macroscopic-to-mesoscopic multi-scale thermodynamic multi-physics field accurate coupling is achieved, and the method is high in engineering applicability and suitable for binary alloy.

The invention provides a titanium ore electrolysis-tungsten extraction titanium-silicon efficient separation method based on a liquid metal cathode, and relates to the technical field of thermometallurgy. The method comprises the steps that metal which is in a liquid state at the working temperature is laid at the bottom of an electrolytic furnace to serve as a cathode matrix, and metal tungsten is prepared to serve as an extraction agent; ore containing titanium dioxide is added into the furnace to serve as electrolyte, and an inert electrode material or graphite is adopted as an anode. Raising the temperature to a target temperature under the protection of inert atmosphere, keeping the temperature to fully pre-melt the electrolyte, lowering the electrode, and applying a certain current for electrolysis. And titanium and silicon elements deposited in the liquid cathode are separated by utilizing the extraction effect of metal tungsten on silicon in a molten state, and electrolysis products are tungsten-silicon alloy and titanium-cathode matrix alloy. The method has the advantages of being wide in raw material adaptation range, high in current efficiency, flexible in cathode metal selection, green and low-carbon in process, controllable in whole process and the like, and a new technical path is provided for recycling metallurgical resources and preparing binary alloy through an electrolytic method.

A two-type nanoparticle-reinforced Al-Cu binary alloy and its preparation method are disclosed. The preparation method includes the following steps: A) Prepare a cast Al-Cu binary alloy with a mass percentage of 2-10% Cu, unavoidable impurity element content ≤0.1%, and the remainder being Al; B) Anneal the cast Al-Cu binary alloy; C) Hold the Al-Cu binary alloy at 300-450℃ for 2-4 hours, and then perform hot extrusion at a temperature of 300-450℃, an extrusion speed of 0.1-5 mm / s, and an extrusion ratio of 9-30:1. D. Place the Al-Cu binary alloy in a heat treatment furnace and heat it to 530-630℃ for semi-solid isothermal treatment, holding it at that temperature for 0.1-3 hours, followed by water quenching. E. Hold the Al-Cu binary alloy at 150-250℃ for 0.5-2 hours, then perform a secondary extrusion at a temperature of 150-250℃, an extrusion speed of 0.1-5 mm / s, and an extrusion ratio of 9-30:1 to obtain a nanoparticle-reinforced Al-Cu binary alloy. F. Perform aging treatment on the nanoparticle-reinforced Al-Cu binary alloy to obtain the final product. The Al-Cu binary alloy prepared by the above method possesses excellent yield strength, tensile strength, and elongation.

A spark plug electrode is manufactured from a ruthenium-based material that includes one or more of the following properties: an equiaxial grain structure, a grain structure with an average grain size of less than or equal to 50 µm, a grain structure with an average porosity of less than or equal to 2%, and / or a grain structure with an average inhomogeneity ratio of less than or equal to 6%. In one example, the ruthenium-based material is a binary alloy comprising rhodium at 1 wt.% to 15 wt.% and ruthenium as the remainder. In another example, the ruthenium-based material is a ternary alloy comprising rhodium at 1 wt.% to 15 wt.%, rhenium at 0.5 wt.% to 5 wt.%, and ruthenium as the remainder. A powder metallurgy process for manufacturing the spark plug electrode is also provided.