221 results about "Amorphous phase" patented technology

The invention provides an iron tailing-based geopolymer electromagnetic wave attenuation performance optimization control method and system, and relates to the technical field of electromagnetic wave attenuation, and the method comprises the steps: 1, setting a synthesis condition parameter set of an iron tailing-based geopolymer in a simulation environment, comprising virtual matching of raw materials, particle size distribution, concentration gradient of an alkali activator and curing temperature-time coupling parameters, and a forming process is deduced through an amorphous phase topological configuration and a pore network evolution rule of aluminosilicate gel in a geopolymer microstructure; and step 2, constructing an interface reaction kinetics process based on the synthesis condition parameter set, and generating an enhanced interface digital mapping system with periodically arranged aluminum oxide and silicon oxide regular tetrahedrons through virtual iteration of mineral admixture ratio and forming process parameter boundary conditions. According to the method, a strengthened interface is constructed through simulation synthesis, a loss layer database is established, and microstructure regulation and control and multi-band electromagnetic wave efficient attenuation are achieved.

According to the mullite castable preparation method based on comprehensive utilization of the secondary aluminum ash nonferrous smelting slag, components are regulated and controlled by controlling the molar ratio of Al2O3 to SiO2, so that porous light mullite stably falls into a mullite phase region, and generation of excessive corundum phases is avoided. PMMA microspheres, corn flour, carbonized rice husks and SiO2 coated calcium carbonate composite pore-forming agent systems are adopted, and a layered slurry formula, gradient slip casting and segmented sintering processes are combined, so that the porosity and strength distribution are accurately regulated and controlled, and low-temperature sintering and amorphous phase change control are realized. By optimizing the grading of the porous light mullite aggregate and adding the homologous fine powder, the bonding strength and compressive strength of the castable are improved. And finally, the surface of the castable is coated with a compact mullite coating, so that the porosity is reduced, and the erosion resistance, corrosion resistance and stripping resistance are remarkably improved. The obtained castable has the advantages of light weight, high temperature resistance, high strength, low cost and excellent thermal stability and erosion resistance.

The invention discloses a silicon powder activity on-line dynamic monitoring method, which comprises the following steps: S1, on-line monitoring: monitoring characteristic parameters by using a plurality of spectrum detectors in the operation process of a fluidized bed; s2, parameter conversion: calculating intermediate parameters according to a parameter conversion formula by utilizing the characteristic parameters monitored in the step S1 in the online monitoring; and S3, activity calculation: calculating the real-time activity index of the silicon powder in the fluidized bed according to an activity calculation formula by using the intermediate parameters calculated in the step S2. The method has the advantages that the activity condition of the silicon powder in the fluidized bed can be accurately reflected in real time, and a scientific basis is provided for evaluating the activity of the silicon powder by accurately calculating key parameters such as a hydroxyl inhibition factor, an amorphous phase activity gain and a metal impurity inhibition factor; a regulation and control basis is provided for real-time regulation and control of the feeding proportion and the like of the fluidized bed, the production process is optimized, the product quality is improved, the production cost is reduced, and remarkable economic benefits are brought to enterprises.

The invention relates to the technical field of amorphous TiC ceramics, in particular to a wear-resistant plate based on an amorphous TiC ceramic wear-resistant coating and a surfacing process thereof, and the wear-resistant plate comprises the following raw materials in parts by weight: 20-40 parts of multi-element powder, 70-80 parts of Ti powder and 20-30 parts of C powder; the preparation process of the multi-element powder comprises the following steps: step 1, synthesizing Al2O3-Cr2O3 core-shell particles through a sol-gel method; 2, mechanical alloying is carried out; 3, sintering is conducted, and multi-element powder is obtained; according to the invention, Al2O3 coated Cr2O3 core-shell particles are adopted to solve the problem of reinforcement phase / matrix interface failure; in-situ amorphous TiC forming realizes instantaneous high temperature and rapid cooling under the powder blank density of 60-80% through resistance wire short-circuit self-propagating reaction, and breaks through amorphous phase preparation limitation.

A metal powder having a composition including the following elements, expressed in content by weight: 6.5%≤Si≤10%, 4.5%≤Nb≤10%, 0.2%≤B≤2.0%, 0.2%≤Cu≤2.0%, C≤2% and optionally containing Ni≤10 wt % and / or Co≤10 wt % and / or Cr≤7 wt % and / or Zr as a substitute for any part of Nb on a one-to-one basis and / or Mo as a substitute for any part of Nb on a one-to-one basis and / or P as a substitute for any part of Si on a one-to-one basis, the balance being Fe and unavoidable impurities resulting from the elaboration, the metal powder having a microstructure including at least 5% in area fraction of an amorphous phase, the balance being made of crystalline ferritic phases with a grain size below 20 μm and possible precipitates, the metal powder having a mean sphericity SPHT of at least 0.80.

The invention relates to a Bi19Br3S27-NiSX catalyst. In the Bi19Br3S27-NiSX catalyst, an amorphous phase NiSX is loaded on a crystal phase Bi19Br3S27. The preparation method of the catalyst comprises the following steps: taking bismuth salt and nickel salt as raw materials, dissolving the raw materials into ethylene glycol, and then adding a sulfur source and a bromine source to obtain a mixed solution; and carrying out solvothermal reaction on the mixed solution to obtain the Bi19Br3S27-NiSX catalyst. The invention relates to a Bi19Br3S27-NiSX catalyst which is applied to production of ethylene through photo-thermal CO2 reduction. The catalyst has the beneficial effects that the catalyst has excellent sunlight full-spectrum light absorption property and photo-thermal conversion capacity, the surface activity of the catalyst is remarkably improved through introduction of the NiSX amorphous phase, the electron transfer efficiency in catalytic reaction is enhanced, the light energy utilization efficiency is improved through the synergistic effect of the multi-component catalyst, and CO2 is subjected to high-selectivity catalytic reduction to produce ethylene.

According to one embodiment, provided is a tungsten oxide powder including primary particles having an average particle size of 100 nm or less. Each of the primary particles include a crystal phase and an amorphous phase coexisting in each primary particle.

The invention provides an iron-tin co-doped amorphous gallium oxide-based ferromagnetic ceramic film, and belongs to the technical field of magnetic semiconductor ceramic materials. The preparation method comprises the following steps: sufficiently mixing Ga, Fe and Sn organic precursor solutions according to a certain proportion to form a GaFeSn organic precursor solution; the cleaned single crystal aluminum oxide substrate is coated with the GaFeSn organic precursor solution in a spinning mode; then putting the obtained GaFeSn organic precursor film into a tube furnace with a single temperature zone; under the air atmosphere, the temperature of the tubular furnace is slowly increased to 550 DEG C at the speed of 5 DEG C / min, heat preservation is carried out for 1 h at the temperature of 550 DEG C, annealing treatment is carried out, and the amorphous GaFeSnO magnetic ceramic film which is uniform in thickness and has the amorphous phase and strong ferromagnetism is prepared. Strong ferromagnetism of the thin film is excited with low iron element doping concentration (10%), and the problem of low conductivity caused by transition metal doping in the magnetic ceramic thin film is solved. The amorphous GaFeSnO magnetic ceramic film prepared by the method has strong ferromagnetism of 170 emu / cm < 3 > under 2K and 90 emu / cm < 3 > under 300K, and the Curie temperature of 335K.

To provide an additive for producing dielectric ceramics which can easily realize a state of atomized powder, has low hygroscopicity, and can realize high density of dielectric ceramics.SOLUTION: An additive for producing dielectric ceramics is a composite powder comprising an alkaline earth metal element A and boron, and in the composite powder, the molar amount a of the alkaline earth metal element A and the molar amount b of the boron satisfy the following formula (1). The composite powder satisfies at least one condition selected from the group consisting of the following condition (i) and the following condition (ii). (i) The composite powder includes an amorphous phase. (ii) The composite powder includes two or more crystal phases.SELECTED DRAWING: Figure 4

The present application relates to a coating and a method for preparing the coating. The coating comprises a first amorphous phase coating, a second amorphous phase coating, a third crystalline phase coating and a fourth amorphous phase coating arranged in sequence from a substrate. The method comprises the following steps: forming the first amorphous phase coating on the substrate by using a first laser-induced pulse arc source process; forming the second amorphous phase coating on the first amorphous phase coating by using a second laser-induced pulse arc source process; forming the third crystalline phase coating on the second amorphous phase coating by using a direct current arc source process; and forming the fourth amorphous phase coating on the third crystalline phase coating by using a third laser-induced pulse arc source process, wherein the first laser-induced pulse arc source process, the second laser-induced pulse arc source process and the third laser-induced pulse arc source process all use a laser-induced pulse arc source process.

The phase structure evolution phase field analysis method in the annealing and crystallization process of the amorphous hafnium oxide-based ferroelectric film comprises the following steps: S1, setting a sequence parameter xi according to the evolution process from an amorphous phase to a crystal phase in the annealing process, and setting a sequence parameter eta according to the process of the crystal phase and the crystal phase; s2, a phase field theoretical model is established, the total free energy is the sum of the free energy of the sequence parameter xi and the free energy of the sequence parameter eta, and the free density in the free energy of the sequence parameter eta is obtained through coupling of the sequence parameter xi and the sequence parameter eta; s3, deducing a weak form of the control equation; and S4, compiling the weak form equation into COMSOL finite element software, solving and analyzing the phase structure in the annealing crystallization process of the thin film. According to the method, the sequence parameter xi representing the transformation process from the amorphous phase to the crystalline phase is introduced and coupled with the sequence parameter eta to construct a new free energy equation and a new control equation, the weak form of the control equation is deduced, and the phase structure and the evolution rule of the hafnium oxide-based ferroelectric film at different annealing moments can be dynamically reproduced.

The invention discloses a high-corrosion-resistance coating material with a high-entropy effect and an amorphous effect and a preparation method of the high-corrosion-resistance coating material, and belongs to the technical field of surface engineering and functional materials. The high-entropy amorphous alloy powder comprises the following alloy raw materials: 21-22 wt% of Fe; % of Co: 22 to 25 wt. % of Cr: 19 to 20 wt.%; % of Mo: 18 to 19 wt.%; % of Ni: 11 to 12 wt.%; % of B: 1.5 to 3.0 wt.%; %, Si: 2.0 to 4.5 wt.%. According to the high-corrosion-resistance coating material with the high-entropy effect and the amorphous effect, the porosity of the coating material is 3.2% or below, the amorphous phase content is 85% or above, and the average microhardness reaches 1120-1180 HV 0.1. The coating provided by the invention shows lower corrosion current, wider passivation interval and higher hardness in a corrosive medium, and is suitable for long-term protection of ocean, aviation and energy equipment.

This invention relates to the field of solid-state battery technology, and particularly to a composite solid-state electrolyte material, its preparation method, and its application. The composite solid-state electrolyte material contains a crystalline phase substance with the general chemical formula: B%A a RE b X 1 c D g +C%A d M e X 2 f D h Where A represents charge carriers; RE represents rare earth elements; M represents metallic elements; X represents... 1 X 2 D is a halide anion; A is an anion doping element or group; a RE b X 1 c D g and A d M e X 2 f D h It is a crystalline phase substance; B% is A a RE b X 1 c D g The mass fraction of the composite solid electrolyte material; C% is A d M e X 2 f D h The mass fraction of the composite solid electrolyte material is defined as follows: 0 ≤ a ≤ 3, 0 < b ≤ 1, 0.5 < c ≤ 12, 0 < d ≤ 5, 0 < e ≤ 2, 1 < f ≤ 20, 0 ≤ g ≤ 4, 0 ≤ h ≤ 5; 85 < B + C < 98, 10% < B% ≤ 85%; 10% < C% ≤ 85%, 0.2 ≤ C / B ≤ 10. The composite solid electrolyte material of this invention includes crystalline and amorphous phase components, giving it high ionic conductivity. The use of moisture-resistant non-metallic halide components instead of traditional halides and oxyhalides in the raw materials also provides it with good air stability.

To provide a halogen-based compound capable of exhibiting high ionic conductivity and enabling visual checking of the mixing state of an additive when a dark-colored additive is incorporated.SOLUTION: There is provided a compound that satisfies formula (1) and has a mass fraction of an amorphous phase of 10% or more, wherein in formula (1), α and β are each independently a value greater than 0, γ is a value of 0 or more and less than 6, D represents an alkali metal element, M includes an element serving as a metal cation other than alkali metal elements, X represents a halogen element, and A represents an atomic group serving as a polyatomic anion containing two or more elements. Formula (1): DαMβX6-γAγ.SELECTED DRAWING: None

To provide an iron-based soft magnetic alloy that possesses Bs≥1.7 T, exhibits low iron loss characteristics, and enables lamination core formation.SOLUTION: An iron-based soft magnetic alloy has a composition expressed by the formula (Fe1-mCom)100-x-ySix(B1-nCn)y, in which the composition ratios x, y, m, and n satisfy 1.0≤x≤3.0 atom%, 11.0≤y≤14.0 atom%, 0.05≤m≤0.5, and 0.0≤n≤0.3. The alloy has a metal structure composed of an α-Fe phase, with an amorphous phase of 20 vol.% or less, a saturation magnetic flux density of 1.7 T or more and 2.0 T or less, and an iron loss of 50 W / kg or less at a magnetic flux density of 1.5 T and a frequency of 1 kHz, wherein the thickness of the iron-based soft magnetic alloy is 18 μm or more and less than 40 μm.SELECTED DRAWING: Figure 2

The invention relates to the technical field of coated cutting tools, and provides a high-temperature wear-resistant coated cutting tool and a preparation method thereof.The high-temperature wear-resistant coated cutting tool comprises a base body and a high-temperature wear-resistant coating, and the base body is coated with the high-temperature wear-resistant coating; the matrix is a WC-based hard alloy; the coating comprises a WaAlbSicB2 bonding layer and a Ti < x > Al < y > Si < z > B2 functional layer from inside to outside, wherein the Ti < x > Al < y > Si < z > B < 2 > functional layer is of a columnar crystal layer-equiaxed crystal layer alternating structure and has a grain size, amorphous phase proportion and Al / Si element triple gradient structure in the thickness direction. A double-peak structure design is adopted in the matrix, namely coarse-grain WC constructs a framework, fine-grain WC fills gaps, and the strength and the toughness are synergistically improved through the double-peak structure design; and meanwhile, the micro-texture array is arranged on the surface of the substrate, so that the coating and the substrate form mechanical interlocking, and the film-substrate bonding strength is remarkably enhanced. The cutter has good wear resistance, good toughness, excellent film-substrate bonding strength and good high-temperature oxidation resistance, and is suitable for high-speed cutting of difficult-to-machine materials such as titanium alloy and nickel-based high-temperature alloy.

The magnetic element of the present embodiment includes a wiring layer and a first ferromagnetic layer in contact with the wiring layer, and the wiring layer includes a first layer of a crystal phase and a second layer of an amorphous phase between the first ferromagnetic layer and the first layer.

The invention discloses a cobalt hydroxide electrode, the cobalt hydroxide electrode is cobalt hydroxide loaded by foamed nickel, the cobalt hydroxide is amorphous phase cobalt hydroxide, and the microstructure of the cobalt hydroxide is a nanoneedle. The electrode obtained by the invention has the characteristics of relatively high catalytic activity and relatively strong reaction kinetics. The invention further discloses a preparation method and application of the cobalt hydroxide electrode.

The solid electrolyte has: first crystallites formed on primary particles and having a first crystal structure; a second crystallite formed in the same primary particle as the first crystallite and having a second crystal structure different from the first crystal structure; and an amorphous phase, the first crystallites and the second crystallites each contain lithium, the first crystal structure is a hexagonal crystal, the second crystal structure is an orthorhombic crystal, and both the crystallite size of the first crystallites and the crystallite size of the second crystallites are 50 nm or less.

To provide a thin ribbon that improves density of a compact formed from a thin ribbon.SOLUTION: A thin ribbon 4 contains an alloy comprising a rare earth element, iron, and boron. The thin ribbon 4 has a surface R and a surface F located on the opposite side of the surface R. The surface R includes an amorphous region 3 in which only an amorphous phase of the alloy is exposed. The surface F includes a crystalline region 7 in which at least a crystalline phase of the alloy is exposed. A plurality of recesses 9 are formed in the crystalline region 7. The surface R does not include the crystalline region 7 in which the plurality of recesses 9 are formed.SELECTED DRAWING: Figure 2

The application discloses CaTiSiO5 glass and a preparation method and application thereof. The preparation method comprises the following steps: under a container-free gas suspension condition, a CaTiSiO5 ceramic preform is melted by using a laser to obtain a CaTiSiO5 melt; and the CaTiSiO5 melt is cooled to room temperature after being kept for a period of time, so that CaTiSiO5 glass is obtained. The CaTiSiO5 glass with a metastable amorphous phase is prepared from the CaTiSiO5 ceramic, the ion release rate and the in-vitro biological activity are improved, so that the prepared new CaTiSiO5 glass can provide a suitable ion release rate and a weak alkaline pH environment, and promote bone tissue repair.

Provided is a laminated structure in which epitaxial growth of a functional thin film can be achieved, problems such as interlayer peeling can be suppressed, and crack progression of the functional thin film can be suppressed. This laminated structure is provided with: a substrate, at least the surface of which is composed of a single crystal; a crystalline orientation control film that contains zirconium oxide (ZrO2) as a main component provided on the single crystal surface of the substrate; and a functional thin film provided on the crystalline orientation control film. The liquid crystal display device is further provided with a buffer layer containing a mixed phase of a crystalline phase and an amorphous phase, and the buffer layer is interposed between the substrate and the orientation control film. In addition, the crack penetration degree is 80% or less as determined by the ratio of the depth of the crack in the vertical direction to the film thickness of the functional film.

This application relates to a cathode material, a preparation method thereof, and an application. The cathode material includes a core and a coating layer coated on the surface of the core. The coating layer is in a composite state of crystalline phase - amorphous phase, and the amorphous phase is distributed on the outer surface of the cathode material. The lattice parameter c / a of the cathode material is 4.935 - 4.950; the chemical formula of the core is LiyNixCozMndAeDmO2, where 1 ≤ y ≤ 1.03, 0.5 ≤ x ≤ 0.96, 0 ≤ z ≤ 0.4, 0 ≤ d ≤ 0.4, 0.01 ≤ e < 0.1, 0.01 ≤ m < 0.1, A is selected from at least one of Mg, Al, Ca, and B, D is selected from at least one of Ti, Ce, Ta, Mo, and Zr, and the surface layer of the core is a rich X layer, where X is selected from at least one of P, S, Si, B, Al, Mg, Mo, Zr, and Nb; the crystalline phase is a lithium salt polyanion compound, and the amorphous phase is Li - M1 - M2 - O, where M1 is selected from at least one of P and S, and M2 is selected from at least one of Al, Mg, Mo, Zr, and Nb. The cathode material described in this application significantly improves the high-temperature cycle stability in a sulfide all-solid-state battery.

To provide silicate glass excellent in chemical durability and having low surface resistivity, and to provide a method for producing the same.SOLUTION: A glass ceramic, comprising a crystalline phase and an amorphous phase, wherein the glass ceramic comprises SiO2, RO, and oxides of an element X, wherein the RO represents oxides of an element R; The element R is one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, and Zn, the element X is one or more elements selected from the group consisting of Nb, Ti, Sn, Ta, W, and Ce, the crystal phase includes one or more crystals containing Si as a constituent element, A value represented by a formula (1a): {(total content ratio of the element X in the amorphous phase) / (total content ratio of the element X in the base glass) * 100} using a total content ratio of the element X in the amorphous phase and a total content ratio of the element X in the base glass of the crystallized glass is more than 100.SELECTED DRAWING: Figure 1

A transparent β-quartz glass ceramic is provided. The glass ceramic comprises a primary crystalline phase comprising a β-quartz solid solution, a secondary crystalline phase comprising tetragonal ZrO2, and an amorphous phase of lithium aluminosilicate. The glass ceramic can be ion exchanged using a molten nitrate bath. A method for producing the glass ceramic is also provided.

An object holder configured to support an object is provided, the object holder including a support surface having a plurality of support elements, where the plurality of support elements includes a reversible change crystalline / amorphous phase material configured to provide a selective change height of the individual support elements. Also provided are a stage comprising such an object holder, an apparatus for controlling the flatness of a surface comprising such an object holder, a lithographic apparatus or tool comprising such an object holder, a method of controlling the shape of a surface, a method of manufacturing an object holder, and a lithographic apparatus or tool comprising such an object holder. And the use of such an apparatus or method in a lithographic apparatus or process.

The invention relates to the technical field of inorganic materials, in particular to low-dielectric SiOC ceramic powder as well as a preparation method and application thereof. The low-dielectric SiOC ceramic powder provided by the invention has low dielectric property and high insulativity, the dielectric loss tangent value is less than 0.0010, the surface resistance is more than 4 * 10 < 14 > ohm, the volume resistance is more than 5 * 10 < 12 > ohm, the conductivity Ec is less than 10 [mu] S / cm, the crystal form of the low-dielectric SiOC ceramic powder is an amorphous phase and has no carbon crystal peak, the whiteness is less than 5%, and the density is greater than or equal to 2.0 g / cm < 3 >. The prepared low-dielectric SiOC ceramic powder has the low dielectric property and high insulativity, the crystal form of the low-dielectric SiOC ceramic powder is an amorphous phase and has no carbon crystal peak, and the evaluation result of the embodiment meets the requirements of the low-dielectric SiOC ceramic powder for high-frequency and high-speed circuits, packaging and other electronic-grade scenes.

The invention relates to a solid electrolyte material for a sodium ion battery and a preparation method, and the preparation method comprises the following steps: building a structure-conductivity correlation model of a Na-Hf-Zr-Si-P-O multi-element system by using computer simulation, and providing an optimal molar ratio interval of a sodium source, a hafnium-containing source, a zirconium-containing source, a silicon-containing source and a phosphorus-containing source through algorithm iteration; weighing each source and primarily mixing in a dry environment; carrying out ball milling to form a uniform nanoscale pre-reaction body; carrying out low-temperature calcination on the pre-reaction body in an oxidizing atmosphere to generate a crystal nucleus and remove amorphous phase impurities; and carrying out compression molding on the low-temperature calcined product, carrying out high-temperature sintering, and continuously growing by using the formed crystal nucleus to finally obtain the compact and pure-phase solid electrolyte sheet. Compared with the prior art, the method has the advantages that high-phase-purity, low-grain-boundary-resistance and large-scale preparation can be realized on the premise that rare earth doping is not needed by a computer simulation-solid-phase reaction integrated method, so that a common bottle exposed in the prior art is effectively overcome.

The present invention relates to a positive electrode active material and a lithium secondary battery comprising the same, and more particularly, to a positive electrode active material comprising a overlithiated lithium manganese-based oxide, wherein a coating layer comprising a crystalline phase and an amorphous phase is formed on the surface of the lithium manganese-based oxide, thereby alleviating elution of transition metals from the lithium manganese-based oxide and suppressing side reactions on the surface of the lithium manganese-based oxide, and to a lithium secondary battery comprising the same.

A glass frit includes a glass which contains: Li; at least one selected from the group consisting of B, Si, P, Ge, and Te; O; and at least one selected from the group consisting of F, Cl, Br, and I. The glass is to turn into a crystallized glass including an amorphous phase and a crystalline phase, the crystalline phase precipitated by a heat treatment at a temperature equal to or higher than a glass transition temperature and equal to or lower than a glass crystallization temperature. The crystallized glass shows diffraction peaks at 2θ=22.8±0.5°, 2θ=32.1±0.5° and 2θ=39.6±0.5° in a powder X-ray diffraction pattern using Cu-Kα radiation.