27 results about "Amorphous phase" patented technology

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.

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.

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.

This invention discloses a biomimetic corrugated layered Fe-based amorphous composite coating, its preparation method, and its application, belonging to the fields of materials science and surface engineering technology. The biomimetic corrugated layered Fe-based amorphous composite coating has a periodically staggered corrugated layered structure along its thickness direction, consisting of alternating TiNx-rich layers and amorphous-rich layers; each layer has a transition layer with a thickness of 20-40 μm between it and the others; the total coating thickness is 300-400 μm; the thickness of the TiNx-rich layer is 50-80 μm; in the TiNx-rich layer, the TiNx reinforcing phase is uniformly distributed with a particle size between 50-200 nm; the thickness of the amorphous-rich layer is 80-120 μm. This invention achieves natural stratification and interfacial synergy between the amorphous phase and the TiNx phase in the thickness direction by controlling the powder particle size distribution, spraying distance, plasma hydrodynamic parameters, and additive atmosphere, forming a composite coating with a significant crack-blocking effect.

The application discloses a preparation method and application of high-stability lead-free halide core-shell nanocrystals and belongs to the field of semiconductor material preparation. The nanocrystal core layer is and the shell layer is an in-situ grown anatase phase / amorphous phase. Tetrabutyl titanate is used as a single titanium source, and one-step coating is carried out through precursor solution preparation-titanium source in-situ hydrolysis-anti-solvent induction-post treatment. Optionally, a chelating agent can be introduced to passivate defects, and a polymer+inorganic dense layer double-coating can be used to strengthen the stability. The oxygen-free preparation conditions are optimized, and one or mixed halogen nanocrystals can be prepared by passing nitrogen gas throughout the whole process, so that the problems of poor water oxygen and thermal stability of traditional nanocrystals are solved. In-situ coating forms an interface bonding, and the fluorescence retention rate is greater than or equal to 80% in air for three months, and the Cl / Br phase can reach greater than or equal to 90%. The process is simple and easy to scale, and the material can be widely applied to the fields of photocatalysis, flexible X-ray imaging, LED, photoelectric detection and the like, and has significant academic and industrial application values.

In one embodiment, a granule can comprise a mixture, the mixture comprising an amorphous phase material and a biocidal agent including calcium oxide, wherein a 24-hour Ca2+ leaching factor change of the granule (24-LF Change) is at least 10%, the 24-LF Change=(24-LFG710 / 24-LFG)×100%, with 24-LFG being a 24 hour Ca2+ leaching factor of the granule and 24-LFG710 being a 24 hour leaching factor of the granule after subjecting the granule to sintering for 3 hours at a temperature of 710° C. In another embodiment, the granule can comprise a 24-hour Ca2+ Leaching Factor (LFG) of not greater than 1700 ppm. The granule can be essentially free of a copper compound, a silver compound, and a zinc compound, and can be implemented in a building component with long time biocidal activity.

The application discloses a lanthanum-based oxychloride nanocrystal-amorphous composite solid electrolyte material and a preparation method and application thereof. a O b ] unit, 1<=a<=5, 1<=b<=5; wherein the chemical general formula of the solid electrolyte material is Li 2x Ta 0.25 La 0.5 Cl 2.75 O x , 0.15<=x<=0.2. The preparation method of the solid electrolyte material is used for preparing a solid electrolyte or a composite positive electrode of a lithium ion solid battery. By introducing an oxygen-containing precursor Li2O to replace LiCl, the application utilizes oxygen to preferentially coordinate with Ta to form a distorted [TaCl a O b ] unit to produce local amorphization, and forms a nanocrystal-amorphous composite structure. The composite structure retains a complete one-dimensional ion transmission channel of the LaCl3 skeleton, and provides an additional three-dimensional ion seepage network through the amorphous phase, thereby significantly improving ion conductivity, and having good electrochemical stability and mechanical deformation capacity, and exhibiting high ion conduction capacity, a wide electrochemical window and excellent cycle stability in a solid battery system.

A composite solid-state electrolyte material, comprising a crystalline phase component and an amorphous phase component. The chemical general formula of the crystalline phase component is expressed as: B%AaREbX1 cDg <sb / >+C%AdMeX2 fDh, A being a carrier, RE being a rare earth element, M being a metal element, X1 and X2 being halide anions, D being an anion doping element or group, 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, AaREbX1 cDg and AdMeX2 fDh being crystalline phase substances, B% being the mass fraction of AaREbX1 cDg in the composite solid-state electrolyte material, C% being the mass fraction of AdMeX2 fDh in the composite solid-state electrolyte material, 85<B+C<98, 10%<B%≤85%, 10%<C%≤85% and 0.2≤C / B≤10.

The application discloses a cutting tool deposited with a multilayer nanocomposite coating and a preparation method thereof, and relates to the technical field of cutting blades. The spherical alumina sand particles are used in the application, different particle sizes of the sand particles are compounded, large particle size alumina sand particles A are introduced, the coating adhesion is improved, and then the wear resistance of the cutting tool is improved. The (TiZrHfNb)N alloy transition layer is deposited in the application, the element interdiffusion between the coating and the substrate is effectively blocked, the high-temperature stability of the cutting tool is improved, the internal stress of the coating is relieved, and the interface bonding force is improved. The Si element in the (TiAlSi)N layer deposited in the application forms an amorphous phase, the high-temperature stability of the cutting tool is improved; the (TiNbCN) layer generates an oxide phase with self-lubricating characteristics at high temperature, the wear resistance can be improved; the addition amount of Si is increased, a dense oxide film is formed at high temperature to protect the cutting tool, and thus the wear resistance is improved.

The invention provides a ceramic material, a panel and a cooking utensil, the ceramic material comprises multiple crystal phases, the multiple crystal phases comprise a first crystal phase and a second crystal phase, and the thermal expansion coefficient of the first crystal phase is smaller than that of the second crystal phase; and the amorphous phase is arranged in a gap between the crystal grains of the plurality of crystal phases. The ceramic material provided by the invention comprises an amorphous phase and multiple crystal phases, the multiple crystal phases comprise a first crystal phase and a second crystal phase, the thermal expansion coefficient of the first crystal phase is smaller than that of the second crystal phase, and the content of the first crystal phase in the ceramic material is larger than that of the second crystal phase in the ceramic material. The ceramic material has a relatively low thermal expansion coefficient as a whole, and cracking of the ceramic material can be avoided. The amorphous phase is arranged in the gaps of the crystal grains of the multiple crystal phases, so that the strength and toughness of the ceramic material are enhanced, and the mechanical shock resistance of the ceramic material is improved.

The application discloses a component-controllable simulated moon soil preparation method based on thermal phase change and belongs to the technical field of moon soil simulation material preparation.The application realizes controllable adjustment of the content of main mineral phases (plagioclase, pyroxene, olivine and amorphous phase) through thermal melting and crystallization processes, and determines the mixing ratio in combination with a nonlinear programming model, so that the simulated moon soil is highly similar to the target moon soil in terms of mineral phase composition, microstructure, optical performance and thermal performance.The method provides a high-fidelity simulation material with adjustable components for the ground experiment of ISRU technology (such as sintering, metallurgy and in-situ 3D printing), and solves the problem that the traditional simulation material preparation method cannot perform fine component factor test design in the related technical research process.

The application discloses a high-bonding-strength metal spraying coating material and a preparation method thereof, and belongs to the technical field of metal surface coating. The coating is composed of a micron-sized metal skeleton phase, a nanometer metal glass amorphous phase and rare earth oxides, a metal-oxygen-rare earth transition phase is generated in situ at an interface through a low-temperature spraying process, a gradient connection structure is formed, and metallurgical-mechanical double bonding is realized. The application solves the problems of low bonding strength, easy peeling and large internal stress of a traditional coating, the bonding strength of the coating is 40-50 MPa, and the cold and hot cycle resistance of the coating is significantly improved. The process is simple, the cost is low, the practicality is high, and the application is suitable for the field of metal surface protection and strengthening with high requirements on bonding strength and reliability.

The present application discloses a multi-anion doped solid electrolyte material, a preparation method, an application and a all-solid-state lithium-ion battery, which relates to the technical field of solid electrolytes. The chemical formula of the multi-anion doped solid electrolyte material is Li 2a+b+ 3c ZrCl4O a F b N c , where 0.7 < a < 1.3, 0 < b < 0.3, 0 < c < 0.3; the amorphous phase ratio of the material is ≥ 90%, and the ionic conductivity is ≥ 2.5 mS·cm ‑ ¹, and the electrochemical stability window is 2.2 - 4.2 V. The present application introduces multi-anion (O, F, N) doping into the Zr-based halide system and uses the ball milling method to achieve sufficient mixing and structural regulation, so that the Li 2a+b+ 3c ZrCl4O a F b N c solid electrolyte material doped with multi-anions improves the ionic conductivity, broadens the electrochemical stability window and the interfacial stability.

The application discloses a reconfigurable indium tin oxide-based mid-infrared metasurface filter device, which comprises a substrate, a dielectric layer and a metasurface structure unit arranged on the substrate in sequence; the metasurface structure unit is concentrically arranged with the dielectric layer and jointly forms a basic unit, and the basic unit is periodically arranged on the upper surface of the substrate; the material of the metasurface structure unit is indium tin oxide, so that the device can work stably for a long time under complex working conditions. Meanwhile, the amorphous phase has a relatively low refractive index and extinction coefficient in the mid-infrared wave band, which is beneficial to reducing the internal optical loss of the device. By adjusting the key geometric parameters of the metasurface structure unit, including thickness h , radius R and arrangement period p , the filter range can be flexibly regulated. In addition, the reversible switching between the amorphous phase and the crystal phase of ITO can be driven by external excitation, so that the filter range of the device can be switched, and dynamic regulation between the two wave bands of 6-7 mu m and 8-10 mu m can be realized.

This invention discloses a method for reconstructing the grain boundary microstructure at the interface between a titanium-aluminum alloy melt and a niobium crucible. The method includes: S1, controlling the interface temperature and temperature gradient between the titanium-aluminum alloy melt and the niobium crucible to construct columnar (Nb,Ti) interfacial structures. x - Al intermetallic compound; S2, continue to control the interface temperature and temperature gradient to cause aluminum elements to segregate at the bottom of the columnar intermetallic compound grain boundaries, undergoing a phase transformation reaction to generate (Nb,Ti)3Al crystalline and amorphous phases; S3, control the interface temperature, temperature gradient, and interaction time to cause the generated phases to pin the grain boundaries, causing the grain boundaries to shift laterally, and generating a composite interface of (Nb,Ti)3Al, (Nb,Ti)2Al, and (Nb,Ti,Al) solid solutions at the bottom of the grain boundaries, eliminating unstable interfaces. This invention can slow down the interaction between the titanium-aluminum alloy melt and the niobium crucible interface, reducing the corrosion rate of the niobium crucible by an order of magnitude, and achieving controllable quantitative introduction of niobium elements.

This invention discloses a low-friction coating for grounding grouting pipes and its preparation method, belonging to the field of surface treatment of grounding materials in power engineering. The method first involves hydrothermally reacting magnesium acetate tetrahydrate with a mixed acid and n-propanol to prepare MgF2 nanoparticles, dispersing them in anhydrous ethanol, adding PVP-K30, and then reacting them with tetraethyl orthosilicate and ammonia to prepare a SiO2-MgF2 composite sol. The sol is then coated onto the inner wall of the pipe using an dip-coating method, followed by multiple cycles of programmed heating and calcination, and natural cooling to obtain the target coating. This coating is a SiO2 amorphous phase-MgF2 crystalline phase composite inorganic coating, with SiO2 as the framework phase and MgF2 as the friction-reducing and wear-resistant phase. It contains uniform nanopores and forms a continuous three-dimensional framework through high-temperature recrystallization. The coating of this invention possesses low friction, high wear resistance, and strong adhesion.

A production method of niobium(V) oxide nanocrystals is provided which is capable of obtaining niobium(V) oxide nanocrystals having a size of less than 100 nm in a state where an amorphous phase is less likely to be generated. The production method of niobium(V) oxide nanocrystals according to the present invention includes heating a mixture containing a pentaalkoxyniobium(V), water, and a water-soluble solvent to 255° C. or higher to allow a hydrothermal reaction to proceed, wherein alkoxy groups in the pentaalkoxyniobium(V) are independently an alkoxy group having 2 to 5 carbon atoms. A molar ratio between water and pentaalkoxyniobium(V) is preferably 0.20 or more. The hydrothermal reaction is preferably allowed to proceed at a pressure of 400 psi or more.

The application discloses a high-entropy AlCrNbSiTi composite hard coating with high toughness and a preparation method thereof. The composite hard coating has a gradient layer structure and is composed of an adhesion barrier layer and a tough layer which are sequentially deposited on a substrate by an arc ion plating method. The adhesion barrier layer is a pure Cr layer, and the tough layer is an AlCrNbSiTi layer. The AlCrNbSiTi layer has a composite structure in which nanocrystals and amorphous phases coexist. The AlCrNbSiTi composite hard coating with high hardness, high toughness, excellent high-temperature stability and high film-substrate adhesion can be flexibly designed and prepared according to requirements, so as to meet the required performance of cutting tools, precision molds and wear-resistant parts. The prepared coating has good adhesion and high deposition rate, the performance and production efficiency of the coating are improved, the production cost is reduced, and it is also possible to prepare a relatively thick functional coating.

This invention relates to the field of magnetic powder preparation technology, and more specifically, to a method for preparing high-performance samarium iron nitrogen magnetic powder based on powder metallurgy. The method comprises the following steps: Step S1: Master alloy melting: Sm blocks and Fe blocks are mixed at an Sm:Fe atomic ratio of 1:(11.8-12.6), and 1.2%-1.8% of nanomaterials by mass are added. The mixture is then melted in a vacuum induction melting furnace to obtain a master alloy melt. Step S2: Gradient cooling rapid solidification: The master alloy melt is cast into a twin-roll rapid solidification machine, and a gradient cooling process is adopted, including an initial high-speed cooling stage and a secondary slow cooling stage, to obtain a rapidly solidified ribbon with an amorphous phase ratio ≤5%. The gradient cooling rapid solidification process used in this invention effectively suppresses the formation of amorphous phase by controlling the cooling rate in stages, resulting in a uniform ribbon with fine grains (50nm-80nm) and an amorphous phase ratio ≤5%.

In one embodiment of the present invention, a metallic magnetic thin film is provided, comprising a plurality of columnar structures having an amorphous phase and whose long sides extend in the thickness direction. The columnar structures include a main body portion and a sidewall portion continuous with the main body portion. The columnar structures contain Fe, Co, Si and B. In the sidewall portions, the total amount of Fe and Co is greater than the total amount of Si and B when converted in atomic percentage concentration.

This application relates to a high-strength silicon nitride ceramic, its preparation method, and its applications, belonging to the field of advanced structural ceramic materials technology. This silicon nitride ceramic has a dual gradient structure, both radial and axial: the radial gradient structure is characterized by a decreasing content of intergranular amorphous phase from 8-15 vol% of the total volume to 1-5 vol% from the central axis towards the outer contour surface; the axial gradient structure is characterized by an increasing content of intergranular crystalline phase from 2-6 vol% of the total volume to 10-18 vol% from the first end face to the second end face. This high-strength silicon nitride ceramic exhibits excellent flexural strength and fracture toughness. It is suitable for applications such as high-performance bearings, gas turbine blades, and armor protection materials.

The present disclosure relates to a black alumina ceramic containing alumina and an amorphous phase, the weight ratio of SiO2, CaCO3, MgO, Co3O4, Mn3O4 and Fe2O3 in the amorphous phase being 1:(0.8-1.0):(0.4-0.6):(1.5-2.3):(2.5-3.0):(2.5-3.0). The black alumina ceramic of the present disclosure does not contain toxic elements, has high black chroma, large strength and drop height, and very low sintering temperature.

An inorganic particle according to the present invention has a shape in which a plurality of spherical protrusions are formed on the surface of a spherical primary particle, and is composed of a mixture of amorphous and crystalline phases, and thus the crystallinity of the entire particle is low. In particular, due to these properties, the inorganic particle has greatly increased chemical surface activity on the surface of a nanoparticle while having a large specific surface area. In addition, surface charge control according to pH adjustment is easy. As a result, due to an increase in the efficiency of forming chemical bonds with a silicon film during a semiconductor polishing process, the speed of polishing can be improved, and scratch damage is low, and thus, when used as polishing particles included in a CMP slurry, polishing efficiency is excellent.

This invention belongs to the semiconductor field, specifically relating to a stress-controllable amorphous carbon film and its preparation method. The stress of the amorphous carbon film of this invention ranges from -100 to 100 MPa. This invention employs traditional PECVD thin film deposition conditions, controlling the doping ratio of deposition gases such as C2-C4 alkynes, C2-C4 alkenes, and C1-C4 alkanes to obtain amorphous carbon films with specific tensile stress, compressive stress, and neutral stress. This invention develops a method for preparing stress-controllable amorphous carbon films through deposition gas doping. This method is simple, the process is stable and controllable, and process adjustment parameters can be added, making it suitable for processes with high requirements for stress conditions.

The application belongs to the technical field of new energy, and relates to an amorphous phase change peak regulation system and method based on photon-phonon cooperative excitation. The system comprises an optical processor, a phase change calculation unit and a near-field radiation heat transfer module. The phase change calculation unit comprises a copper substrate, an elastic interface modification layer arranged on the copper substrate, an amorphous phase change material layer arranged on the elastic interface modification layer, and a dielectric film layer covering the outer surface of the amorphous phase change material layer. The optical processor is connected with the dielectric film layer. The amorphous phase change material layer is connected with the near-field radiation heat transfer module. The application solves the problems of slow response speed, poor regulation and control capacity, and long energy conversion path in the prior art, and realizes direct, rapid and efficient regulation and control of power fluctuation of a power grid.

A processing method of a single crystal material includes the following steps. A single crystal material is provided as an object to be modified. The amorphous phase modification apparatus is used for emitting a femtosecond laser beam to process an internal portion of the object to be modified. The processing includes using a femtosecond laser beam to form a plurality of processing lines in the internal portion of the object to be modified, wherein each of the processing lines include a zigzag pattern processing, and a processing line spacing between the plurality of processing lines is in a range of 200 μm to 600 μm, wherein after the object to be modified is processed, a modified layer is formed in the object to be modified. Slicing or separating out a portion in the object to be modified that includes the modified layer.

This invention discloses an iron-nitride-based amorphous and nanocrystalline electromagnetic wave absorbing material, its preparation method, and its applications. The material comprises an in-situ generated Fe4N phase, which forms a composite structure with an iron-based amorphous and / or nanocrystalline matrix. The material possesses a composite phase structure of the amorphous phase and Fe4N phase, or an amorphous phase, α-Fe(Si) phase, and Fe4N phase. The preparation method involves a three-step nitriding treatment of iron-based amorphous and / or nanocrystalline powder: first, stress-relief heat treatment in a nitrogen atmosphere; second, reduction heat treatment in a mixed atmosphere of nitrogen and hydrogen; and third, nitriding heat treatment in a mixed atmosphere of hydrogen and ammonia, resulting in the in-situ generation of the Fe4N phase. This invention can improve the dielectric loss of the material, optimize impedance matching, and enhance electromagnetic wave absorption performance. This material has a minimum reflection loss of -73.28dB in the 1-18GHz frequency band, a -10dB bandwidth of up to 1.99GHz, and a matching thickness as low as 3.85mm. It can be applied to electromagnetic wave absorbing devices in fields such as high-frequency communication, radar detection, and remote sensing navigation.