118 results about "Binary alloy" patented technology

A neuromorphic computing array includes horizontal lines and vertical lines that intersect the horizontal lines at cell locations. Magnetic tunnel junction cells are located at the cell locations. Each cell is electrically connected to a corresponding one of the horizontal lines and to a corresponding one of the vertical lines. Each cell includes a substrate, a seed layer overlying the substrate, and a nitride layer, overlying the seed layer, and optionally having a thickness greater than 5 Angstroms. Each cell further includes a templating layer, outward of the nitride layer, including a binary alloy having an alternating layer lattice structure, and having a thickness greater than 50 Angstroms. Each cell still further includes a magnetic layer overlying the templating layer, a tunnel barrier outward of the magnetic layer; and a magnetic layer outward of the tunnel barrier. The magnetic layer includes a Heusler compound and exhibits perpendicular magnetic anisotropy (PMA).

The invention discloses a design method and a preparation method of low-melting-point high-entropy liquid metal GaInSnBiZn, and belongs to the field of alloy research and development. The liquid metal alloy is formed by mixing five metal elements including Ga, In, Sn, Bi and Zn according to the equal atomic proportion, and aims at avoiding formation of intermetallic compounds and optimizing the microstructure through the high-entropy effect, and low melting point, high stability and good mechanical property of the alloy are achieved. The mixing enthalpy of the binary alloy and the formation enthalpy of the ternary alloy are calculated, thermodynamic analysis and phase diagram research are combined, the proportion of the five elements is determined, the high-entropy alloy is prepared through a vacuum arc melting method under the high vacuum condition, and the high purity and stability of the high-entropy alloy are ensured. The liquid alloy is low in melting point and high in stability, theoretical guidance and technical support are provided for design and preparation methods of novel liquid metal materials, some limitations in the prior art are overcome, and the liquid alloy has high practical application value.

The invention belongs to the technical field of catalyst preparation, and relates to efficient preparation of clean energy, in particular to an energy-saving hydrogen production system using a binary alloy catalyst formed by rare earth elements under the assistance of ethanol. The preparation method comprises the following steps: uniformly mixing metal precursors of palladium and lanthanum, molybdenum hexacarbonyl and an n-caprylic acid solvent by adopting a wet chemical synthesis method, carrying out an oil bath reaction for a period of time, separating precipitates, and sequentially washing and drying to obtain the binary alloy catalyst. The improvement and promotion effects of ethanol on a traditional water electrolysis hydrogen production system are researched in an H-shaped electrolytic tank, and it is proved that ethanol-assisted hydrogen production is an efficient and energy-saving hydrogen production mode. The preparation method of the catalyst is simple, has few steps and is simple and convenient to operate. Compared with a Pd metal alkene catalyst and commercial Pd black, the catalyst provided by the invention has more excellent catalytic activity and stability. The hydrogen production mode is more efficient, and energy consumption is greatly reduced.

A neuromorphic computing array includes horizontal lines and vertical lines that intersect the horizontal lines at cell locations. Magnetic tunnel junction cells are located at the cell locations. Each cell is electrically connected to a corresponding one of the horizontal lines and to a corresponding one of the vertical lines. Each cell includes a substrate (1401), a seed layer (1403) overlying the substrate, and a nitride layer (1403A) overlying the seed layer, and optionally having a thickness greater than 5 Angstroms. Each cell further includes a templating layer (1403B) outward of the nitride layer, including a binary alloy having an alternating layer lattice structure, and having a thickness greater than 50 Angstroms. Each cell still further includes a first magnetic layer (1405) overlying the templating layer, a tunnel barrier (1409) outward of the first magnetic layer; and a second magnetic layer (1411) outward of the tunnel barrier. The first magnetic layer (1405) includes a Heusler compound and exhibits perpendicular magnetic anisotropy, PMA.

The invention belongs to the technical field of hydrogen evolution catalysts, and particularly relates to an amorphous metal hydrogen evolution catalyst, a preparation method and application. The preparation method comprises the steps that metal nickel serves as a working electrode, binary alloy powder of different proportions serves as a precursor, the binary alloy powder is sprayed to the surface of the metal nickel, and a first intermediate electrode is obtained; reducing the binary alloy powder on the surface of the metallic nickel into metal to obtain a second intermediate electrode; taking the second intermediate electrode as a substrate to obtain a metallic nickel loaded binary metal / amorphous metal electrode; the binary metal / amorphous metal loaded on the metallic nickel in the metallic nickel loaded binary metal / amorphous metal electrode is the amorphous metal hydrogen evolution catalyst. The problems that an existing hydrogen evolution catalyst is high in cost, poor in hydrogen evolution catalytic activity and low in stability are solved, the prepared amorphous metal hydrogen evolution catalyst has excellent hydrogen evolution catalytic activity and long-time stability, and the excellent hydrogen production effect can be achieved in the electro-catalysis hydrogen evolution process.

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.

Provided are: a sputtering target configured to suppress trouble that could occur at the time of sputtering; and a method for manufacturing the same. The sputtering target contains a binary alloy of Cu and Al, with the balance being unavoidable impurities. The content (at%) of Cu and Al satisfies the condition of: 0.48 ≤ Al / (Cu + Al) ≤ 0.70; and further satisfies at least one of conditions (1)-(3). Condition (1): 0.48 ≤ Al / (Cu + Al) < 0.55, and the area ratio of pores in the field of view when observed by SEM being 2.0% or less. Condition (2): 0.55 ≤ Al / (Cu + Al) ≤ 0.70, and the area ratio of pores in the field of view when observed by SEM being 1.0% or less. Condition (3): the oxygen content of the sputtering target is 1000 ppm by mass or less, and the bending strength of the sputtering target is 70 MPa or more.

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 invention discloses a preparation method of a compact gamma-TiAl alloy sheet, which comprises the following steps: firstly, obtaining an Al-Ti-Al three-layer composite plate, then thinning the Al-Ti-Al composite plate to a target thickness through a rolling and recrystallization annealing circulating process, and finally, carrying out zero-pressure low-temperature and high-temperature reaction annealing treatment to synthesize the compact gamma-TiAl alloy sheet. According to the preparation method, holes in the TiAl3 phase are fundamentally avoided, and the compact and hole-free gamma-TiAl binary alloy plate can be prepared only by performing non-pressure reaction annealing treatment in a common atmosphere furnace or a vacuum heat treatment furnace. Besides, pressure does not need to be applied in the annealing process, the Al-Ti-Al composite thin plate can be pre-machined into a part in a complex shape, then the part is reacted and annealed to be synthesized into a compact gamma-TiAl alloy plate product, and the purpose that synthesis is conducted after forming is truly achieved.

The invention discloses a reaction device for preparing NiB binary alloy through magnesiothermy rapid reduction, and relates to the technical field of alloy preparation, the reaction device comprises a rotary drum, the rotary drum is rotatably erected on a supporting seat, and the driving end of the rotary drum is provided with a rotation driving assembly used for driving the rotary drum to rotate along the axis of the rotary drum in a transmission mode; the heating assembly is arranged outside the rotary drum, and the heating assembly is used for heating materials in the rotary drum; the material shoveling assembly is arranged in the rotary drum and comprises a material shoveling plate, a material guiding plate and a material shoveling driving assembly, the output end of the material shoveling driving assembly is in transmission connection with the material shoveling plate, and the material shoveling driving assembly is used for driving the material shoveling plate to be switched between a material shoveling terminal position and an initial position; when the material shoveling plate moves to the material shoveling terminal position from the initial position in the rotating direction of the rotary drum, the material shoveling plate shovels away the ultrahigh part of the materials accumulated in the rotary drum, and the ultrahigh part is guided and conveyed to the position behind the materials in the rotary drum through the material guiding plate. The reaction device prevents excessive accumulation of materials.

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 the technical field of arc additive manufacturing, and particularly to a method for additive manufacturing of heterogeneous dual-wire arc of NiTi-based shape memory alloy. The manufacturing method is to feed NiTi alloy wire and metal wire simultaneously through a dual-wire arc additive device, and use an ultra-high frequency pulsed TIG welding power source to realize the additive manufacturing of heterogeneous dual-wire arc of NiTi-based shape memory alloy. The present invention is used to solve problems such as low phase transformation temperature and large phase transformation hysteresis in existing arc additive manufacturing technology. Moreover, the ultra-high frequency pulsed TIG arc can improve the microstructure morphology, thereby being beneficial to stabilizing and improving the performance of NiTi-based alloys, broadening the application fields of NiTi-based ternary alloys, and providing an effective solution for arc additive manufacturing of NiTi-based shape memory alloys.

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 invention relates to the technical field of chemical synthesis and preparation, and discloses a NiB binary alloy preparation technology and system.The NiB binary alloy preparation system comprises an ultrasonic oscillation mechanism, an ultrasonic oscillation mechanism, a control module and a control module, and the ultrasonic oscillation mechanism comprises a control terminal and an ultrasonic oscillation groove; the chemical reaction mechanism comprises a supporting plate and a reduction reaction mechanism which are arranged on the ultrasonic oscillation tank, and a stirring mechanism, a mixing mechanism I and a mixing mechanism II which are arranged on the supporting plate; the reduction reaction mechanism comprises a tank body connected to the ultrasonic oscillation tank, a first constant-speed flow guide assembly and a second constant-speed flow guide assembly, wherein the first constant-speed flow guide assembly and the second constant-speed flow guide assembly are arranged on the supporting plate. According to the method, the reversed-phase micro-emulsions with different components can be automatically prepared, finally, the reversed-phase micro-emulsions with the different components are collected to be subjected to the reduction reaction, the NiB amorphous alloy is generated, the NiB amorphous alloy can be conveniently taken out from the top-suspension waste liquid obtained after the reaction, the top-suspension waste liquid does not need to be discharged firstly and then taken, and the cost is reduced. And the production efficiency and the preparation precision can be effectively improved.

The present invention discloses a method for evaluating the breakdown delay and jitter performance of gas switches, relating to the technical field of gas switches. By searching for data on the melting point, density, specific heat capacity, and work function of electrode materials and calculating changes in the work function of binary alloy materials, the method can directly evaluate the breakdown delay and jitter performance of different electrode materials. Compared with previous methods that required extensive experimental comparisons of the breakdown delay and jitter performance of gas switches made of different electrode materials, this method can significantly reduce work time and workload, thereby improving experimental efficiency and reducing experimental costs.

The invention discloses an alloy nanoparticle catalyst for a water electrolysis hydrogen evolution reaction. The alloy nanoparticle catalyst is characterized in that the catalyst is PtFe alloy nanoparticles. The PtFe alloy catalyst is nano-particles with uniform size, and the particle size of the nano-particles is 2-5 nm. The content of Pt is 28%-42%, and the content of Fe is 58%-72%. A one-step hydrothermal synthesis method is adopted, transition metal Fe is introduced through an alloy strategy, Pt-based binary alloy nanoparticles are synthesized, and the particle size is about 2-5 nm. By testing an X-ray diffraction spectrum, the crystal configuration is face-centered cubic. The corresponding overpotential of the PtFe alloy nanoparticles under the current density of 10 mA cm <-2 > is 25 mV, which is superior to that of commercial Pt / C (32 mV), so that the PtFe alloy nanoparticles are more favorable for promoting the hydrogen evolution reaction of electrolyzed water. After 20,000 cycles of cyclic stability tests, the activity of the PtFe alloy nanoparticles is only reduced by 4%, and commercial Pt / C is reduced by 20%. In a constant-current stability test, the voltage of the PtFe alloy nanoparticles is almost unchanged within 100 hours, and commercial Pt / C is reduced by 14%. The catalyst not only has good catalytic activity, but also has excellent stability.

A magnetoresistive random-access memory cell includes a substrate; a seed layer outward of the substrate; a resistive layer outward of the seed layer; and an ultra-thin templating layer. The ultra-thin templating layer is outward of the resistive layer, and includes a binary alloy having an alternating layer lattice structure. The ultra-thin templating layer has a thickness of 7-30 Angstroms. A Heusler layer is located outward of the ultra-thin templating layer, includes a Heusler compound, and exhibits perpendicular magnetic anisotropy (PMA).

The invention discloses a high-wear-resistance Fe-Sn binary alloy part and a preparation method thereof, and belongs to the technical field of alloy materials. The binary alloy part comprises the following components in percentage by mass: 1.5-2.5% of Sn and the balance of Fe, and is prepared by the following steps: (1) mechanical alloying: weighing Fe powder and Sn powder as raw materials of the binary alloy part, and carrying out step-by-step ball milling on the raw materials of the binary alloy part under the protection of high-purity Ar gas to obtain mechanical alloying powder; and (2) hot pressing sintering is conducted, specifically, the mechanical alloying powder obtained in the step (1) is sequentially subjected to pre-pressing and dual-pressure gradient heating sintering, and the binary alloy part is obtained. By optimizing the alloy component design and combining with the improvement of the preparation method, the negative influence of factors such as large melting point difference and low solid solubility on the performance of the binary alloy part is effectively relieved, so that the binary alloy part with high hardness, excellent wear resistance and good processability is obtained, and the requirement of the industrial field on a high-performance wear-resistant material is met.

The invention discloses a grain boundary diffusion method and application thereof in preparation of a sintered neodymium-iron-boron magnet. The grain boundary diffusion method comprises the following steps: providing a rare earth permanent magnet base material; after a heavy rare earth metal layer and a metal protection layer are sequentially formed on the surface of the rare earth permanent magnet base material, permeation and diffusion treatment is carried out, and grain boundary diffusion is completed; wherein the heavy rare earth metal layer is composed of heavy rare earth metal dysprosium, and the metal protection layer is composed of metal copper. According to the grain boundary diffusion method, a metal protection layer copper is formed on the surface of a heavy rare earth metal layer dysprosium, evaporation of dysprosium elements under the vacuum high-temperature condition is avoided, and it is guaranteed that the heavy rare earth metal dysprosium is diffused into a magnet grain boundary phase to the maximum extent; meanwhile, the metal protective layer copper reacts with the heavy rare earth diffusion source to form a binary alloy diffusion source, the binary alloy diffusion source is diffused into a grain boundary, uniform distribution of a rare earth-rich phase is improved, the diffusion effect of heavy rare earth metal elements is improved, the coercivity of the magnet is obviously improved, and efficient utilization of heavy rare earth resources is achieved.

The invention relates to a light-weight high-strength and high-toughness magnesium-lithium alloy, a preparation method and application of the light-weight high-strength and high-toughness magnesium-lithium alloy in preparation of horseshoes, the light-weight high-strength and high-toughness magnesium-lithium alloy is prepared from the following raw materials in percentage by mass: 5-13% of Li, 0.5-3.5% of Al, 0-1.5% of Y and the balance of Mg and inevitable impurities, and the total amount of the impurities accounts for less than or equal to 0.1% of the alloy. On the basis of a traditional Mg-Li binary alloy, the Al element is introduced to form AlLi and Mg2Al3 phases, the Al element and the Al2Y phase induced by the Y element are cooperated, multi-phase synergistic strengthening is achieved, the synergistic breakthrough that the tensile strength is larger than or equal to 350 MPa and the elongation is larger than 20% is achieved while the density is ultralow, and compared with a traditional Mg-Li alloy, the strength of the alloy is improved by 50% or above, and the weight reduction effect is remarkable; through a spontaneous twin crystal mechanism in an alpha + beta double-phase region alloy, dislocation proliferation induced by groove rolling is combined, the damping performance (Q1 value) of the alloy is greatly improved, the damping potential of a horseshoe made of the alloy is far better than that of a traditional aluminum product, the joint impact load during horse movement can be remarkably reduced, and the protection effect is achieved.

A spark plug electrode made from a ruthenium-based material that includes one or more of the following characteristics: an equiaxed grain structure, a grain structure with an average grain size that is less than or equal to 50 μm, a grain structure with an average porosity that is less than or equal to 2%, and / or a grain structure with an average non-homogeneity ratio that is less than or equal to 6%. In one example, the ruthenium-based material is a binary alloy that includes rhodium from 1 wt % to 15 wt %, inclusive, and the balance ruthenium. In a different example, the ruthenium-based material is a ternary alloy that includes rhodium from 1 wt % to 15 wt %, inclusive, rhenium from 0.5 wt % to 5 wt %, inclusive, and the balance ruthenium. A powder metallurgy method is also provided for manufacturing the spark plug electrode.

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.

This invention discloses a method for preparing a nickel-titanium alloy ingot containing a low-melting-boiling-point metal, comprising: Step 1: placing a first nickel rod vertically and making a hole to form a receiving hole; Step 2: filling the receiving hole with low-melting-boiling-point metal particles; Step 3: placing a second nickel rod on top of the first nickel rod and then welding them to obtain a binary alloy preform; Step 4: placing the binary alloy preform in a crucible, with the second nickel rod placed close to the bottom of the crucible; Step 5: placing the crucible containing the binary alloy preform in a vacuum induction melting furnace for melting to obtain a binary alloy body; Step 6: pressing sponge titanium, electrolytic nickel blocks, and the binary alloy body in a pressing machine to obtain an electrode. This invention does not require specialized equipment and does not incur additional equipment purchase costs. Compared with additive manufacturing and self-propagating high-temperature synthesis methods, it has advantages such as low cost, high efficiency, and high yield.

The invention relates to the technical field of metal surface treatment and intelligent monitoring, and discloses an intelligent monitoring management system in a NiP binary alloy preparation process. The method comprises the following steps: acquiring ultraviolet-visible-near-infrared full-spectrum scanning data of a plating solution sample, constructing a three-dimensional absorption spectrum matrix, generating a separated spectral feature vector by utilizing principal component analysis, carrying out simultaneous quantitative analysis on multiple components based on a Lambert-Beer law and a chemometrics principle, and predicting a byproduct accumulation rate in combination with a recurrent neural network. Real-time monitoring and intelligent management of by-products in the NiP chemical plating process are achieved, and the technical problem that traditional single-wavelength detection is insufficient in selectivity is solved.

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.

The invention discloses a preparation method of a binary V-based alloy and application of the binary V-based alloy in hydrogen permeation, and relates to development and preparation of a novel binary alloy material for hydrogen permeation, and the component of the alloy is V90Al10. The preparation method of the alloy comprises the following steps: firstly, cleaning the raw materials V and Al, and then accurately weighing the raw materials; and then smelting in a vacuum glove box electric arc smelting furnace for multiple times to ensure uniform distribution of alloy components. The prepared material has good hydrogen permeation performance, hydrogen embrittlement resistance and corrosion resistance, and has a good application prospect.