36 results about "Amorphous matrix" patented technology

The application belongs to the technical field of alloy smelting, and particularly relates to a high-frequency nanocrystalline material and a preparation method and application thereof. The application provides a high-frequency nanocrystalline material, the material is a high-frequency nanocrystalline alloy, and the composition expression of the alloy is: Fe a Ni b Si c M d N e ; the M is one or more of Ti, Mn, Zn and Al; the N is one or more of La, Ce and Tb; wherein a, b, c, d and e respectively represent the atomic percentage content of each corresponding component, 60<=a<=72, 10<=b<=15, 5<=c<=10, 3<=d<=8, and e=100-a-b-c-d. The high-frequency nanocrystalline material utilizes the characteristics of amorphous alloy, and distributes nanocrystalline particles on the amorphous matrix, so that excellent soft magnetic performance is achieved. The material has the characteristics of high saturation magnetic flux density and low coercivity, and has more excellent performance in high-frequency application.

This invention relates to an Fe-Ni based alloy with enhanced soft magnetic properties utilizing a medium-range ordered structure and its preparation method. The chemical formula of the alloy is: Fe bal Ni a Cr y Si b B c M d Cu e X f Its microstructure is as follows: the alloy matrix is ​​mainly amorphous, with dispersed atomic-scale medium-range ordered (MRO) clusters comprising 15%–40% by volume. The size of these clusters is controlled between 1 nm and 5 nm, and no long-range crystalline phases larger than 10 nm are formed. By introducing Ni element to couple magnetic moments with Fe to reduce the saturation magnetostriction coefficient, and by using a low-temperature relaxation annealing process to control the pre-precipitation behavior of Cu element, a high-density MRO-reinforced framework is established in the amorphous matrix. This material possesses high saturation magnetic induction, low coercivity, and excellent high-frequency permeability, which can improve the problems of large magnetostriction coefficients and high high-frequency noise in existing high-Bs iron-based nanocrystalline alloys. It is particularly suitable for high-frequency high-power transformers and wireless charging magnetic shielding modules.

A method for preparing a sealing ring material for ultra-supercritical steam turbines belongs to the field of metallic materials. A master alloy is prepared by vacuum induction melting, followed by gas-supported electroslag remelting to obtain an electroslag ingot. The composition of the electroslag ingot is (3.5–4 wt%) Fe, (7.5–8 wt%) Mn, (1.8–2.0 wt%) Nb, (1.5–1.8 wt%) Si, (1.9–2.1 wt%) Ti, (17–18 wt%) B, with the remainder being Co. The electroslag ingot is then processed into a sealing ring blank of the required size using conventional hot deformation technology, held at 250–280°C for 60–90 minutes, and then precision-machined to obtain the finished sealing ring. The material of this invention exhibits excellent wear resistance, corrosion resistance, and high-temperature resistance. Two highly hard submicron-scale dispersed reinforcing phases are formed in the Co matrix. These two reinforcing phases possess high hardness and high strength, and are small in size, ensuring excellent high-temperature resistance of the sealing ring. At application temperatures above 400°C, some Co... 54 B 40 Fe6 can dissolve into the matrix, causing the amorphous matrix lattice to expand, which is beneficial to improving the sealing performance of the sealing ring.

The invention belongs to the field of nuclear fuel cladding material surface engineering, and particularly relates to a gradient structure protective coating and a preparation method and application thereof. According to the method, the Cr layer, the Cr-Al-Si layer and the Cr-Al-Si-N layer are sequentially deposited, a three-layer structure with components and density in gradient transition is constructed, interlayer stress concentration is effectively avoided, and the binding force and toughness are improved. Wherein the grain size of the Cr-Al-Si intermediate layer is 25-45nm, and the Cr-Al-Si intermediate layer can accommodate and combine irradiation point defects; the surface Cr-Al-Si-N layer is of a composite structure with 5-15 nm nanocrystals wrapped by an amorphous matrix, a rapid defect annihilation channel is provided, and the anti-irradiation performance is synergistically enhanced. The method is completed through single-period sequential deposition, the process is easy and convenient to control, reproducibility is good, industrialization implementation is easy, and the prepared coating has excellent radiation resistance, high-temperature water vapor oxidation resistance and good film-substrate bonding strength.

A transistor with improved low-frequency noise characteristics is disclosed. Phase complexing channel layer having quantum dots distributed within an amorphous matrix is formed, and a surface stabilization layer is formed in contact with the phase complexing channel layer. The surface stabilization layer has a repeating structure of an inorganic insulating layer and an organic shielding layer. Since the quantum dots of the phase complexing channel layer are in a quantized state, carriers trapped in the quantum dots are limited. Even if current is generated at the phase complexing channel layer by the drain-source voltage, the carriers trapped at the quantum dots are maintained at a constant level. Accordingly, the drain-source current is constant even when the gate voltage increases, and the noise component of the gate voltage is not reflected in the drain current.

The present disclosure relates to a healable superplastic amorphous alloy, and specifically, to a healable superplastic amorphous alloy capable of exhibiting superplastic behavior and unique healable behavior by maximizing the complexity of the amorphous structure for an Icosahedral quenched-in nuclei quasi-crystal cluster to be formed in the amorphous matrix through the composition limitation and additive element control of Zr-Cu-Ni-Al alloy.

This invention provides an amorphous solid electrolyte material, comprising: an amorphous matrix based on a disordered arrangement of polyhedra and an ion-conducting substance; wherein the polyhedra in the amorphous matrix are composed of at least one cation and at least one halide anion or oxygen-containing anion; the ion-conducting substance comprises at least one of the following: Li + Na + K + Cu + Ag + This invention also provides a method for preparing an amorphous solid electrolyte material and its application in an all-solid-state alkali metal battery.

A compound having a formula Lia(NixW1-x)1-yZryOb, wherein 0.5≤x<1, 0<y<1, 0<a<10, 0<b<10 and having nanocrystals dispersed in an amorphous matrix, the nanocrystals all having a d-spacing < 2.5 Å. Counter-electrode (22) comprising the compound, electrochromic device (10) comprising the counter-electrode, and double-glazing unit comprising the electrochromic device. Method for forming a layer of the compound and method for preparing the electrochromic device.

The invention discloses a TiNx skeleton structure reinforced high-wear-resistance amorphous composite coating and a preparation method thereof. Belongs to the technical field of functional protection materials and surface engineering. The composite coating is composed of a Fe-based amorphous matrix and a TiNx skeleton phase, the TiNx phase is distributed in the coating in a three-dimensional penetrating form, and the TiNx phase and the Fe-based amorphous matrix form a continuous metallurgical bonding structure. According to the framework structure, the interface bonding strength and the crack resistance of the coating are remarkably improved, and the problems of brittle fracture and oxidative wear of a traditional amorphous coating in the frictional wear process are effectively inhibited. Compared with a traditional physical powder mixing method and a thermal spraying method needing to introduce a metal bonding layer, the method has the advantages that the double effects of high adhesive force without the bonding layer and self-supporting framework structure strengthening are achieved through a powder self-construction mechanism, the process is simplified, and the structure is stable. The coating has the characteristics of high hardness, low friction coefficient and excellent wear resistance, and has good engineering adaptability and popularization value.

A Zr-based amorphous composite material with high room temperature plasticity and its preparation method belong to the field of new materials technology. Its nominal atomic percentage chemical composition is Zr. 100‑a‑b Al a Cu b Where 5≤a≤15, 20≤b≤30; the matrix is ​​Zr-based amorphous material with uniformly and dispersedly distributed Cu soft particles, and the size and number density of the Cu soft particles are adjusted by the preparation process; the particle diameter is 100-1000 nm, and when the size is constant, the number density corresponds to the volume fraction of particles in the composite material, which is 2%-10%. First, Zr is prepared... 100‑a‑b Al a Cu b The process involves: first, determining the melting point of the alloy ingot; then, using melt blowing casting technology to control the melt overheating temperature and holding time, thereby regulating the size and distribution density of Cu particle precipitates to obtain a Zr-based amorphous composite material with good microstructure uniformity. This invention significantly improves its room-temperature plastic deformation capability. The composite material combines the high strength advantages of an amorphous matrix, the unique plastic coordination ability brought by in-situ pure Cu particles, and the work hardening characteristics induced by twinning.

The application discloses a high-entropy alloy material with a heterogeneous structure, which is composed of Fe, Ni, Cu, Co, Zn, V and P elements; wherein the atomic percentages of the metal elements Fe, Ni, Cu, Co and Zn in the high-entropy alloy material are the same, and are all 14% to 16%; the atomic percentage of the metal element V in the high-entropy alloy material is 10% to 20%; and the balance is the non-metal element P. The application further discloses a preparation method of the high-entropy alloy material with the heterogeneous structure. The high-entropy alloy material with the heterogeneous structure can be prepared through the regulation of element components, contents and ball milling process parameters, the alloy material has an amorphous structure matrix, the structure can provide a large number of unsaturated sites, the catalytic activity is improved, meanwhile, nano-crystals are dispersedly distributed on the amorphous matrix, the nano-crystals have good conductivity, the transfer efficiency of electrons can be effectively improved, and thus the OER catalytic reaction is facilitated.

The invention discloses a rare earth soft magnetic nanocrystal with high plane orientation and a preparation method thereof. The alloy component of the material is R2 (FexCo1-x) 14B, x is larger than 0 and smaller than or equal to 1, Fe is an iron element, Co is a cobalt element, R is one or more of rare earth elements Y, La, Pr, Nd, Sm and Gd, the material is of an amorphous / nanocrystalline double-phase structure, a nanocrystalline phase is a rare earth soft magnetic phase and has the characteristic of easy plane orientation, and the plane orientation degree is not lower than 75%. According to the method, the rare earth soft magnetic amorphous strip is obtained through rapid hardening melt-spinning, and in the crystallization process, a substrate is used for inducing an amorphous matrix to separate out nanocrystals with high plane orientation, so that the plane anisotropy and the exchange coupling effect are enhanced. The rare earth soft magnetic nanocrystalline has the characteristics of high saturation magnetic flux density, high cut-off frequency, low coercive force and the like, and has important significance on miniaturization, high frequency and light weight development of metal soft magnetic materials.

The invention relates to a preparation method of HoErMn alloy fibers, in particular to a preparation method of HoErMn alloy fibers for wide-temperature-range magnetic refrigeration. The invention aims to solve the problems that a preparation process of a HoErMn alloy is difficult to accurately regulate and control a microstructure and a magnetic entropy variable temperature zone is narrow, and provides a preparation method of a HoErMn alloy fiber for wide-temperature-zone magnetic refrigeration, the directional regulation and control of the microstructure of the alloy fiber are realized by accurately controlling melt drawing and rapid solidification process parameters, and the preparation method of the HoErMn alloy fiber for wide-temperature-zone magnetic refrigeration is provided. And a multi-phase structure in which an amorphous matrix and a nanocrystalline phase coexist is formed, so that magnetic phase change distribution and magnetic entropy variable temperature area widening are realized, the magnetic-thermal performance of the alloy is optimized, and the application requirements of low-temperature wide-temperature-area magnetic refrigeration are met. The method is simple and controllable in technological operation, the cooling rate and the microstructure are accurately regulated and controlled, the preparation process is environmentally friendly and efficient, no pollutant is generated, and large-scale production is facilitated.

The application provides a full-metal iron-based nanocrystalline soft magnetic alloy, which is processed by using full-metal raw materials and does not add non-metal elements; has an Fe-Co-M-N-Cu nanocrystalline alloy system, wherein M=Zr, Hf, Nb; N=Li, Be; the Fe-M-N-Cu system contains 85-90% of Fe. By using the technical scheme, the full-metal iron-based nanocrystalline soft magnetic alloy material is provided, which is a full-metal high-iron-content Fe-Co-M-N-Cu nanocrystalline alloy material, the structure of which comprises an amorphous matrix and nanocrystalline grains, the nanocrystalline grain phase is a body-centered cubic alpha-Fe(Co), and the average grain size is less than 12nm; the iron content is up to 90% and the material can also have high thermal stability and magnetic induction performance.

The invention relates to the technical field of batteries, in particular to a binder preparation method, a binder, a positive wafer pole piece and a wafer semiconductor all-solid-state battery. The preparation method of the binder provided by the invention comprises the following steps: weighing 20%-35% by mass of an electron conduction phase, 30%-45% by mass of an ion conduction phase, 10%-20% by mass of a high-entropy adjustment phase and 15%-25% by mass of an amorphous promotion phase as raw materials; the raw materials are smashed and then subjected to ball milling, and precursor powder with at least five metal elements is obtained; melting and quenching the precursor powder, crushing and sieving to obtain high-entropy amorphous matrix powder; and mixing the high-entropy amorphous matrix powder with a lithium salt, carrying out melt blending, and carrying out post-treatment to obtain the binder. According to the binder prepared by the method provided by the invention, the electron conduction phase, the ion conduction phase, the high-entropy adjustment phase and the amorphous promotion phase are mutually matched and cooperated, so that the generation of an SEI / CEI film can be greatly inhibited, and the interface impedance is remarkably reduced.

The application relates to a degradable ZnZrCu alloy with an amorphous-crystal heterostructure and a preparation method thereof, and belongs to the field of material design and preparation. The application proposes a combined process route of mechanical alloying and selective laser melting to in-situ synthesize a ductile phase in an amorphous matrix, and develops a degradable ZnZrCu alloy with both amorphous phase and ductile phase. The medical Zn-based amorphous alloy developed by the application shows good strength-plasticity synergy and good degradation rate. The application inherits the advantages of additive manufacturing of selective laser melting, can effectively break through the size limitation of traditional forming process of amorphous alloy, realize the individual customization of the shape and structure of the amorphous alloy, and provides a new idea for the preparation of the amorphous-crystal heterostructure alloy and biomedical application. Meanwhile, the application is simple in composition, controllable in process, and convenient for large-scale industrial application.

The present invention belongs to the technical field of metallic materials, and relates to a nanocrystalline toughened titanium-based amorphous composite material and a preparation process thereof. The copper mold suction casting method + high-pressure torsion process is adopted, and the morphology and size of dendrites in the composite material are regulated by a large plastic deformation method, so as to realize the evolution of micron-scale dendrites in the composite material into nanoscale ones, thereby obtaining a nanocrystalline toughened titanium-based amorphous composite material. The size of the nanocrystals is 20-300 nm, the nanoindentation hardness is ≥4.05 GPa, and the uniform plastic deformation strain is ≥4%. The formation of nanocrystals avoids the softening caused by highly localized shear in the amorphous matrix and improves the work hardening ability of the titanium-based amorphous composite material.

The application provides a kind of amorphous surface heterogeneous amorphous coating and its preparation method and application, it is related to amorphous coating preparation technical field.The application provides a kind of preparation method of amorphous surface heterogeneous amorphous coating, comprising the following steps: using heterogeneous amorphous powder is sprayed on the surface of amorphous alloy matrix to form heterogeneous amorphous coating;The chemical composition of the heterogeneous amorphous powder and amorphous alloy matrix is not same.The application uses cold spraying method, and the porosity of heterogeneous amorphous coating prepared on the surface of amorphous alloy is low, shrinkage is small, amorphous rate is high, the thermal influence on zirconium-based amorphous matrix of high strength, high hardness and metastable state is small, which greatly improves the hardness, wear resistance, corrosion resistance and service life of the matrix, and widens its application range.

The invention provides a heterojunction solar cell and a preparation method thereof. The preparation method comprises the following steps: providing a semiconductor substrate; forming a first functional layer on the first side of the semiconductor substrate, wherein the material of the first functional layer comprises a semiconductor doping material and an intrinsic material; forming a second functional layer on the second side of the semiconductor substrate, wherein the material of the first functional layer comprises a semiconductor doping material and an intrinsic material; wherein the first side is opposite to the first side, the second side is opposite to the first side, at least one of the first functional layer and the second functional layer comprises an amorphous matrix and unit cells dispersed in the amorphous matrix, the material of the amorphous matrix comprises the intrinsic material, and the material of the unit cells comprises the semiconductor doping material. According to the embodiment of the invention, the intrinsic material and the semiconductor doped material are formed in the same preparation process, so that the replacement frequency of the heterojunction solar cell in different process chambers can be reduced in the preparation process, the cross contamination phenomenon is improved, the exposure time of an intermediate product in the air is reduced, and the pollution is further reduced.

The invention belongs to the field of amorphous nanocrystalline composite coatings, and discloses an anti-corrosion wear-resistant high-toughness core-shell structure amorphous nanocrystalline composite coating and a preparation method thereof.The anti-corrosion wear-resistant high-toughness core-shell structure amorphous nanocrystalline composite coating comprises an amorphous matrix phase and a nanocrystalline phase, the volume ratio of the amorphous matrix phase to the nanocrystalline phase is 80-90%, the volume ratio of the nanocrystalline phase to the nanocrystalline phase is 10-20%, the nanocrystalline phase is composed of particles of a crystalline state core-shell structure, and the volume ratio of a shell layer in any particle is 70-80%; the volume ratio of the core part is 20%-30%, the shell layer simultaneously comprises a Ni solid solution phase and a Mg6Cu16Si7 configuration intermetallic compound phase, the core part is a Co2Si configuration intermetallic compound phase, the hardness of the amorphous matrix phase is between the hardness of the shell layer and the hardness of the core part, and the hardness of the core part is greater than that of the shell layer. The invention further discloses a method for preparing the coating in an ultra-high-speed laser cladding mode. The method solves the problem that a coating with comprehensive high corrosion resistance, excellent wear resistance and good plasticity and toughness cannot be prepared in the prior art.

The invention relates to the field of getter alloys, and discloses a low-temperature deposition method and a passive vacuum maintenance film getter, a deposition chamber is provided, a substrate is loaded on a sample table, and the sample table is sent into the deposition chamber; introducing a first reaction gas containing boron and a second reaction gas containing carbon into the deposition chamber; turning on an RF plasma source to perform low-temperature deposition, and enabling the first reaction gas and the second reaction gas to react with sputtered metal atoms or ions by controlling the power of the RF plasma source, the partial pressure of the trimethylborane gas and the partial pressure of the methane gas, and co-depositing on the substrate to form the amorphous alloy film. According to the invention, crystallization and grain growth of the amorphous film during long-term work or subsequent thermal process are inhibited through process regulation and control, so that the high-activity structure of the amorphous substrate is stabilized.

The invention discloses an ion-induced doped amorphous material as well as a preparation method and application thereof, and belongs to the technical field of synthesis of amorphous materials. Wherein the ion-induced doped amorphous material is prepared from the following raw materials in parts by weight: 0.1 to 0.2 part of TiO2, 0.35 to 0.5 part of NaBH4, 0.02 to 0.04 part of NH4F, 0.01 to 0.015 part of Ga (NO3) 3.9 H2O, 0.02 part of (NH4) H2PO4, 0.08 part of citric acid, 0.05 part of PVP (Polyvinyl Pyrrolidone) and 30 parts of alcohol liquid; a crystalline material is used as a base, and hydrothermal anion-induced amorphization and low-temperature liquid-phase in-situ reduction are combined: strong coordination anions break crystal lattices to form a high-activity amorphous matrix, Ga is synchronously reduced into a zero-valent cluster, and the CO2 reduction rate is increased by virtue of a Ga-O-Ti bond; the PO4 < 3-> doped amorphous material is hydrophilic, alkali-resistant, adaptive to multiple pH values, and helpful to dissolve alkaline CO2, so that the traditional limitation is broken through.

The invention belongs to the technical field of metal materials, and relates to a nanocrystalline toughened titanium-based amorphous composite material and a preparation process thereof, a copper mold suction casting method and a high-pressure torsion process are adopted, and the morphology and size of dendrites in the composite material are regulated and controlled through a severe plastic deformation method, so that the evolution from micron-sized dendrites to nano-sized dendrites in the composite material is realized; the size of the nanocrystalline is 20-300 nm, the nanoindentation hardness is larger than or equal to 4.05 GPa, and the uniform plastic deformation strain is larger than or equal to 4%. The formation of nanocrystals avoids softening caused by highly localized shearing in an amorphous matrix, and improves the work hardening ability of the titanium-based amorphous composite material.

This invention relates to a peptide-like deep eutectic solvent, comprising glycerol, proline, and arginine. The invention utilizes the synergistic effects of glycerol, proline, and arginine to construct a continuous, dense, and dynamically tunable multi-site hydrogen bond network. This hydrogen bond network achieves highly efficient antifreeze protection through both bulk and interfacial mechanisms: at the bulk level, it inhibits ice nucleus formation by disrupting the ordered arrangement of water molecules through competitive hydrogen bonding, and promotes a glass transition during cooling, forming a metastable amorphous matrix that spatially restricts the diffusion and rearrangement of water molecules; at the ice-water interface level, it forms a dynamic adsorption layer that effectively hinders ice crystal growth and recrystallization. This peptide-like deep eutectic solvent achieves highly efficient inhibition of the entire ice crystal formation process, solving the problems of single hydrogen bond networks and insufficient antifreeze regulation in existing deep eutectic solvents. It can be widely applied in antifreeze fields such as food freezing and preservation, and anti-frost and anti-icing coatings.

The application relates to the material field and relates to an amorphous composite material and a preparation method thereof. a Cu b Al4Ag1Sn 0.75 , 43<=a<=55.25, 39<=b<=51.5; a+b=94.25; the amorphous composite material controls the thermodynamic precipitation enthalpy of the austenite phase B2-CuZr by regulating the molar ratio of alloy atoms Zr and Cu, simultaneously reduces the stacking fault energy of the martensitic phase transformation of the austenite phase B2-CuZr, and improves the martensitic phase transformation capacity of the austenite phase B2-CuZr. The austenite phase B2-CuZr in the amorphous composite material absorbs a large amount of strain energy by undergoing martensitic phase transformation in the deformation process, and the austenite and the martensite can hinder the expansion of shear bands in the amorphous matrix and promote the proliferation of shear bands, so that good plasticity and work hardening capacity are obtained, and the toughness and plasticity of the amorphous composite material are significantly improved.

There is provided a pellicle film for an exposure apparatus, wherein the pellicle film comprises MoSi2 and Mo5Si3 crystals dispersed in an amorphous matrix, wherein the pellicle film is characterized by one or both of: i) 70% or more MoSi2 crystals and 30% or less Mo5Si3; crystals as a volume percentage of a total volume of MoSi2 crystals and Mo5Si3; crystals in the film; and ii) a multi-layered microstructure. Also described is a pellicle assembly for an exposure apparatus, such as a lithographic apparatus, the pellicle assembly including such a pellicle film and a support frame for supporting the pellicle film. There is also provided an exposure apparatus comprising such a pellicle or pellicle film. A method of manufacturing a pellicle film, wherein the method comprises deposition of material layers to form a pellicle film according to the invention.

To provide a glass-metal composite capable of suitably achieving both of at least 1000°C heat resistance and nitriding resistance.SOLUTION: A glass-metal composite 1 includes a glass member 2, a ceramic member 3 and a metal member 4 sandwiched thereby. The metal member 4 includes two metal lead 5 on the side of one shorter side; in the glass member 2, a crystallized portion is mixed in an amorphous matrix; and when leaving a sintered body consisting of a glass powder green compact constituting the glass member on the following conditions: a temperature of 1000°C (in the atmospheric atmosphere) and a period of time of 100 hours, the rate of change of a thermal expansion coefficient before and after the leaving is 10% or less.SELECTED DRAWING: Figure 1

The application relates to a high-damping zirconium-based amorphous composite material and a preparation method thereof, and belongs to the field of functional material research and preparation. 63.5‑ a M a Al9Cu 23 Fe 4.5 ) 100‑b X b , M=Nb, Ti or Hf, X=O, C or B, wherein 0.5<=a<=4.5, 0.1<=b<=0.5. In the preparation process, industrial pure Zr, M, Fe, Al, Cu and N are used as raw materials, vacuum arc melting technology is used to melt and prepare alloy ingots, and the required alloy material is obtained through copper mold casting technology, and the damping performance Q ‑1 value of the material is 0.011-0.015. The amorphous composite material of the application has the performance advantages of the material itself, high damping performance, and expanded application fields and ranges of the amorphous material; the material has more excellent room-temperature plastic deformation capacity and fracture strength; the Snoek relaxation peak value temperature of the material is lower than the glass transition temperature of the amorphous matrix, the material is used at the optimal damping temperature, the alloy has excellent structure stability, and is not prone to glass transition or crystallization instability.

The invention relates to a high-heat-conductivity amorphous nitride coating as well as a preparation method and application thereof. The high-heat-conductivity amorphous nitride coating is composed of crystals and an amorphous matrix, the crystals are distributed in the amorphous matrix in a dispersed mode, the amorphous matrix is SiNx amorphous, and the crystals comprise TiN, BN and AlN. Compared with the prior art, the double-phase nitride coating is prepared by adopting a microstructure precise control technology, the limitation that an amorphous material is generally low in thermal conductivity at 2W / mK is broken through, the highest thermal conductivity of the nitride coating of a SiNx / TiN, SiNx / BN or SiNx / AlN double-phase structure can reach 100W / mK, and the nitride coating can be widely applied to the fields of electronic chips, LEDs, optical devices, lasers and the like.

This invention discloses a lyophilized formulation of fosfomycin sodium for injection and its preparation method. The lyophilized formulation comprises fosfomycin sodium, L-histidine, trehalose dihydrate, glycine, and disodium edetate, wherein L-histidine serves as a buffer component, trehalose dihydrate serves as an amorphous matrix protectant, glycine serves as a crystalline framework agent, and disodium edetate serves as a metal ion chelating agent. The preparation method includes solution preparation, pH adjustment and fine filtration, pre-freezing and annealing, primary drying, secondary drying, and nitrogen sealing. This invention, through the synergistic combination of quaternary excipients, specifically solves multiple technical problems in the fosfomycin sodium system, such as epoxy hydrolysis degradation, difficulties in lyophilization due to high sodium content, and extreme hygroscopicity. The resulting lyophilized formulation exhibits intact appearance, rapid reconstitution, and good stability.