76 results about "Oxide coating" patented technology

The invention relates to a laser deep penetration welding method for producing a metallurgical joint of at least two oxide-coated metallic workpieces (1, 2) by means of a laser beam unit (11) which is controlled for laser beam shaping of a laser beam (10) such that a temperature gradient (gradT) is generated in the liquid melt of the weld seam (4') to form a broad-lens-shaped weld seam (4'), which results in a broad-lens-shaped weld seam (4') with a contour angle (α) relative to the joining zone (3). F ) of less than 80 degrees, in particular of less than or equal to 75 degrees and a width-to-depth ratio between 1:0.8 and 1:1.2.

A system and method for process water and oxide coating recovery and distribution in a direct reduction system, such as a system for producing direct reduced iron. A warm lime softener is used to remove (recover) calcium, alkalinity, and other constituents from the process water system and to produce an effluent that can be further processed and returned as makeup to the process water system. The lime softening process requires lime (or similar material) to be added to the influent, thereby increasing the calcium and pH levels until they become supersaturated and precipitate. This chemical process results in effluent that is low in calcium, alkalinity, and total suspended solids.

A method for creating oil-filled porous anodic oxide coatings for stainless steel is disclosed. The coating has anti-corrosion and omniphobic properties to resist both atmospheric conditions, or other conditions with exposure to vapor, and wet conditions, in which the coating is exposed to and / or immersed in liquid. The anodic oxide coating of the present invention can be made by the steps of cleaning and / or electropolishing a steel substrate, applying anodic oxidation to the steel substrate, washing the steel substrate in an organic solvent, and annealing the substrate at high temperature. To fill the porous coating with an oil, a solvent exchange method may be applied.

The application provides a cold coke water treatment process and system. The cold coke water treatment process comprises the following steps: step one: after being collected by a coke storage pool, the cold coke water is filtered by a flat ceramic membrane to obtain concentrated coke water and dilute coke water, and the concentrated coke water is returned to the coke storage pool; step two: after being stored by a cold coke water tank, the dilute coke water is divided into dilute coke water I and dilute coke water II, the dilute coke water I is sequentially treated by a first-stage electro-catalytic oxidation unit, a second-stage electro-catalytic oxidation unit and a reverse osmosis unit to obtain purified water; and the dilute coke water II is used as cold coke water makeup water and recycled; the first-stage electro-catalytic oxidation unit is provided with an electro-catalytic oxidation reaction tank, the electro-catalytic oxidation reaction tank is provided with a cathode and an anode, the cathode is a titanium electrode, and the anode is a titanium-based metal oxide coating electrode; the second-stage electro-catalytic oxidation unit is provided with an electro-catalytic oxidation reaction tank, the electro-catalytic oxidation reaction tank is provided with a cathode and an anode, the cathode is a titanium electrode, and the anode is a boron-doped diamond electrode. The treatment process has good treatment effect and is environmentally friendly and economical.

The application discloses a surface-coated and bulk-gradient co-doped sodium ion battery positive electrode material and a preparation method and a sodium ion battery thereof, and belongs to the technical field of sodium ion batteries. The sodium ion battery positive electrode material comprises a layered transition metal oxide and a coating layer coated on the surface of the layered transition metal oxide; the layered transition metal oxide is a nickel-iron-manganese-based layered transition metal oxide, and the coating layer is an amorphous boron oxide coating layer; the chemical formula of the surface-coated and bulk-gradient co-doped sodium ion battery positive electrode material is Na(Ni 1 / 3 Fe 1 / 3 Mn 1 / 3 ) x B y M z O2, 0.9≤x≤0.98, 0.01≤y<0.2, 0.01≤z<0.1, and x+y+z=1, and M is selected from W or Nb; wherein the doping concentration of boron elements and metal M elements presents a gradient decreasing trend from the surface layer to the inside along the radial direction; the surface boron oxide coating and the bulk-gradient doping of boron elements and metal M elements are simultaneously realized; the surface coating layer effectively reduces the interface side reaction, and the bulk-gradient doping stabilizes the crystal structure from the inside; and the two synergistically act to jointly inhibit the structural degradation in the cycle process.

The application discloses a high-thermal-stability high-nickel ternary material, a preparation method and application. The application utilizes the characteristic that the high-nickel ternary material is sensitive to water, reconstructs a layer of NiOOH on the surface of the high-nickel ternary material, changes the NiOOH coating layer into various transition metal oxyhydroxides by means of an ion exchange reaction, constructs a layer of phosphide on the surface of the transition metal oxyhydroxide through a phosphorization reaction, finally, decomposes the various transition metal oxyhydroxides into high-entropy oxides by means of high-temperature calcination, and then obtains a high-nickel ternary material coated with double layers; the high-entropy oxides have high thermal stability and lithium ion conductivity. In-situ construction of the high-entropy oxide coating layer can not only improve the thermal stability of the high-nickel material, but also help to improve the rate performance and cycle performance of the high-nickel ternary material. The phosphide has strong conductivity, and in-situ coating of the phosphide on the surface of the high-entropy oxide can form a complementary advantage with the high-entropy oxide, and further improve the rate performance of the high-nickel ternary material.

A component for use in a semiconductor processing chamber is provided. A component body of a metal or metal alloy has a process facing surface. An intermediate aluminum oxide coating is on the process facing surface, wherein the intermediate aluminum oxide coating is at least 99% pure by weight and has a porosity of less than 0.1% by volume, and wherein the intermediate aluminum oxide coating has a first thickness. A process exposed layer is on the intermediate aluminum oxide coating, wherein the process exposed layer comprises at least one of yttrium, hafnium, zirconium, lanthanum, magnesium, and a lanthanide, and wherein the process exposed layer is at least 99% pure by weight and has a porosity of less than 0.1% and has a second thickness, wherein the second thickness is less than or equal to the first thickness.

Vehicle (100), comprising: an electric motor (106) and a battery pack (108) that is electrically coupled to the electric motor (106), wherein the battery pack (108) comprises a plurality of battery cells (200), each battery cell (200) of the plurality of battery cells (200) comprising: an anode current collector (202); an anode active material layer (204) in direct contact with a surface of the anode current collector (202), wherein the anode active material layer (204) comprises anode active materials and optionally an anode binder, electrically conductive material or both the anode binder and the electrically conductive material; a cathode current collector (210); a cathode active material layer (208) in direct contact with a surface of the cathode current collector (210), wherein the cathode active material layer (208) comprises cathode active materials (302) having a metal oxide coating (304) and optionally a cathode binder, electrically conductive material, or both the cathode binder and the electrically conductive material; and a separator (206) positioned between the anode active material layer (204) and the cathode active material layer (208); characterized in that the metal oxide coating (304) TiO2 is electrochemically deposited on the cathode active materials (302), comprises a pure crystalline phase and an area of ​​the metal oxide coating (304) has a thickness variation between 5 nm and 10 nm.

This invention discloses a solid electrolyte, its preparation method, and a battery having the same, relating to the field of solid electrolyte technology. It includes a sulfide solid electrolyte and zinc oxide, wherein the zinc oxide coats the surface of the sulfide solid electrolyte. The zinc oxide is granular, and the particle size of the zinc oxide is smaller than that of the sulfide solid electrolyte. The mixture is ball-milled. The advantages of this invention are: by coating the surface of the sulfide solid electrolyte with a layer of zinc oxide, the zinc oxide coating does not significantly reduce the ionic conductivity of the sulfide solid electrolyte and improves its air stability. Furthermore, the ball-milling method coats the granular zinc oxide onto the surface of the granular sulfide solid electrolyte without melting the zinc oxide, making the process more convenient.

Disclosed in the present invention is a composite powder having a CaCO3@ZnO core-shell structure, the composite powder comprising a nano calcium carbonate core and a zinc oxide shell, wherein the weight of the zinc oxide is 5-15% of the weight of the nano calcium carbonate. The composite powder having a CaCO3@ZnO core-shell structure of the present invention has good dispersibility, has whiteness greater than 95, a uniform zinc oxide coating and a very low content of zinc oxide, and has a good application effect in rubber, thereby achieving the aims of being low cost, having high efficiency and being environmentally friendly.

This invention provides a multi-surface modified O2-type lithium-rich manganese-based material and its preparation method, belonging to the field of O2-type lithium-rich manganese-based cathode materials. This invention first coats a Na-based P2-type precursor with fluoride, followed by ion exchange to obtain an O2 structure. This improves the rate performance of the O2-type lithium-rich manganese-based material and avoids the phase transition (O2 to O3). An oxide coating layer is prepared on the surface of the fluorine and lithium compound-containing O2-type lithium-rich manganese-based material using metal alkoxides. This allows for low-temperature preparation of the oxide coating layer, preventing the O2 structure from transforming into the O3 structure and improving cycle stability. The multi-coating process suppresses the release of reactive oxygen species during charging, improving the first-cycle coulombic efficiency. The multi-surface modified O2-type lithium-rich manganese-based material prepared by this invention exhibits high first-cycle coulombic efficiency and cycle stability.

This application discloses a high-stability sodium-ion battery cathode material and its preparation method, specifically including the following steps: S1, a precursor with a core-shell composition gradient distribution is synthesized through a layered reaction, and a continuous transition microstructure is formed by controlling the Cu / Fe ratio in the core / shell; S2, a metal oxide coating is applied to the surface of the precursor; S3, the coated precursor is subjected to a multi-stage gradient calcination process to obtain the gradient-doped cathode material Na. 0.67 Mn 0.77 Cu x Fe( 0.23‑x )O2@M y O2. The preparation process of this application is simple, and the product can be used as a core component of a highly stable sodium-ion battery.

This application provides a double-layer coated lithium-rich manganese-based cathode material, cathode sheet, and solid-state battery, comprising a lithium-rich manganese-based material, an oxide coating layer covering the lithium-rich manganese-based material, and a carbon material coating layer covering the oxide coating layer. The inner oxide coating layer stabilizes the cathode structure, inhibits manganese dissolution from the lithium-rich manganese-based material, reduces interfacial impedance, and simultaneously reduces direct contact between the cathode material and the solid electrolyte, suppressing the formation of a space charge layer and reducing charge transfer impedance. The outer carbon material coating layer improves the cathode's electronic conductivity and enhances the interfacial contact between the cathode and the solid electrolyte, thereby improving the battery's electrochemical performance and cycle performance.

The present invention relates to a layered oxide cathode material, a method for producing the same, a cathode plate, and a sodium-ion battery, and belongs to the technical field of sodium-ion batteries. The layered oxide cathode material comprises O3@P2 phase composite oxide particles, which include O3 phase nickel-manganese oxide layered particles and a P2 phase metal oxide coating layer coated on the surface of the O3 phase nickel-manganese oxide layered particles, and an inert coating layer coated on the surface thereof, wherein the inert coating layer is a carbon layer and / or an inorganic metal oxide layer. When the layered oxide cathode material according to the present invention is used in a sodium-ion battery, the manufactured sodium-ion battery has high initial Coulomb efficiency, excellent rate characteristics, long cycle life, and good air stability.

The application relates to the technical field of lithium ion battery positive electrode materials, and specifically discloses a preparation method of an atomic / molecular layer deposition combined modified high-nickel ternary positive electrode material, which comprises the following steps: placing high-nickel ternary positive electrode material powder in a deposition cavity, and introducing inert gas; adopting atomic layer deposition technology to deposit an oxide coating layer on the surface of the base material; and adopting molecular layer deposition technology to deposit a flexible porous organic-inorganic hybrid coating layer on the surface of the oxide coating layer, so as to obtain the atomic / molecular layer deposition combined modified high-nickel ternary positive electrode material. The application utilizes the precise control advantage of the atomic / molecular layer deposition technology, realizes the complementary functions of interface blocking and stress buffering through the composite coating layer, effectively improves the interface and structural stability of the high-nickel ternary positive electrode material, improves the cycle and rate performance of the high-nickel ternary positive electrode material, provides key support for the research and development of high-energy-density lithium batteries, and has important technical value and industrial application prospect.

This application relates to a spraying process for a highly corrosion- and wear-resistant yttrium oxide composite coating, aiming to solve the problems of high porosity, poor high-temperature stability, and insufficient wear resistance of existing yttrium oxide coatings. The process includes degreasing and cleaning, pure water immersion, sandblasting roughening, steam and water rinsing, ultrasonic cleaning, pre-drying, plasma spraying, orthogonal experimental parameter optimization, deep ultrasonic cleaning, and final drying and curing. A yttrium oxide and zirconium oxide composite powder is used to form a dense coating under optimized plasma spraying parameters, and high cleanliness is ensured through multi-stage cleaning and clean environment control. Through the above technical solution, this application significantly improves the coating's density, chemical stability, wear resistance, and thermal shock resistance, effectively blocks the penetration of corrosive media, reduces particulate contamination, and meets the stringent requirements of semiconductor etching equipment for long-lasting protective coatings.

A multilayer ceramic capacitor includes a multilayer body including an inner layer portion including dielectric layers and internal electrode layers that are laminated, two main surfaces opposed to each other in a lamination direction, two lateral surfaces opposed to each other in a width direction intersecting the lamination direction, two end surfaces opposed to each other in a length direction intersecting the lamination direction and the width direction, and two outer layer portions on both sides of the inner layer portion in the lamination direction, and external electrodes on the two end surfaces. The multilayer body includes an exposed surface that is not covered by the external electrodes. The exposed surface includes a metal oxide coating region coated with a metal oxide which is different from a component of the plurality of dielectric layers.

This utility model belongs to the field of grain-oriented silicon steel production technology, specifically relating to an air blowing device for improving edge shrinkage of magnesium oxide coating on silicon steel surfaces. The air blowing device includes a support frame and an air blowing assembly. The support frame is mounted on a magnesium oxide coating machine. The air blowing assembly includes a lower support rod, an upper support rod, an airflow pipe, and a nozzle. The lower end of the lower support rod is slidably mounted on the support frame. The two ends of the upper support rod are hinged to the upper end of the lower support rod and the nozzle, respectively. The airflow pipe passes through the upper support rod and connects to the air source and the nozzle. The nozzle has at least two air holes at its outlet end, and the nozzle is equipped with an airflow regulator and an air hole number regulator. This air blowing device effectively solves the edge shrinkage phenomenon that occurs at the edge of the steel strip after magnesium oxide coating, ensuring the quality of magnesium oxide coating at the edge of the steel strip, preventing adhesion, and improving production efficiency and steel strip yield.

The application discloses a 45 steel based on a double slow cooling process and a preparation process thereof, and belongs to the technical field of 45 steel preparation, and comprises a 45 steel base material and a modified titanium carbide reinforced alloy composite coating formed on the surface of the 45 steel base material; the 45 steel base material is prepared through smelting, continuous casting, three-section slow cooling after continuous casting, rolling, four-section slow cooling after rolling and annealing processes; the modified titanium carbide reinforced alloy composite coating comprises an alloy matrix and modified titanium carbide powder dispersed in the alloy matrix; the modified titanium carbide powder comprises a titanium carbide core, an ion implantation modification layer formed on the surface of the titanium carbide core and a nano-oxide coating layer coated on the surface of the ion implantation modification layer. Through the above mode, the double slow cooling pretreatment process of the 45 steel base material is used, and the stress hidden danger is further eliminated from the base material side, so that a reliable guarantee is provided for long-term service of the composite coating.

An electrolytic capacitor (1) comprising a main body shell (2), a capacitor element (10), and a sealing body (5), wherein the main body shell (2) has an opening, the capacitor element (10) is housed within the main body shell (2), the sealing body (5) seals the opening of the main body shell (2), the capacitor element (10) is wound with an anode foil (11) having an oxide coating (16) on its surface and a cathode foil (12) opposite to the anode foil (11) separated by a spacer (13), and an electrolyte layer (19) is provided between the anode foil (11) and the cathode foil (12), the electrolyte layer comprising: a solid electrolyte (17) comprising a conductive polymer; and a liquid electrolyte (18) covering at least a portion of the solid electrolyte (17), the liquid electrolyte (18) comprising at least an unsaturated fatty acid salt, wherein the unsaturated fatty acid salt monomer or a mixture of unsaturated fatty acids added to the unsaturated fatty acid salt comprises more than 50% by weight of the liquid electrolyte (17).

The present application relates to the technical field of new energy battery, in particular to a coated ternary material mixed with different particle sizes, a preparation method thereof and a battery; the preparation method comprises the following steps: mixing a nickel-cobalt-manganese precursor and a lithium salt, and then mixing the mixture with a gel solution to obtain a premix; mixing a metal oxide with the gel solution to obtain an oxide coating agent; mixing a carbon source with the gel solution to obtain a carbon coating agent; coating the oxide coating agent on the outside of the premix by using an electrospinning method to obtain an oxide-coated ternary material; coating the carbon coating agent on the outside of the premix by using an electrospinning method to obtain a carbon-coated ternary material; sintering the oxide-coated ternary material and the carbon-coated ternary material; mixing and sintering the sintered oxide-coated ternary material and the sintered carbon-coated ternary material; wherein the particle size of the oxide-coated ternary material is larger than that of the carbon-coated ternary material. The preparation method is simple, has fewer processes, and can shorten the preparation time.

This invention discloses a method for achieving high hydrogen / deuterium / tritium permeation resistance in oxide coatings. By applying an electric current to an oxide coating (such as zirconium oxide, chromium oxide, titanium oxide, aluminum oxide, etc.) at a certain temperature, the lattice thermodynamic equilibrium is disrupted by the electric field, resulting in a high concentration of lattice point defects generated in situ within the coating, significantly enhancing its hydrogen / deuterium / tritium permeation resistance. Experimental results show that these lattice point defects can form deep-level traps, capturing hydrogen isotope atoms and effectively inhibiting the diffusion and permeation of hydrogen and its isotopes within the coating, thus achieving high hydrogen / deuterium / tritium permeation resistance. This process is simple, efficient, low-cost, and widely applicable, enabling the efficient preparation of oxide coatings with high hydrogen / deuterium / tritium permeation resistance. It has significant application prospects in the fields of tritium permeation protection in fusion reactor structural materials, hydrogen embrittlement protection of metals, and hydrogen permeation resistance in materials used in hydrogen-containing and hydrogen isotope-containing environments.

The invention provides a zinc-containing positive electrode active material and a preparation method thereof, a positive plate and a battery. The positive electrode active material comprises a zinc-containing positive electrode active material matrix and an oxide coating layer which coats the surface and comprises trivalent metal elements, a Zn element is doped in a zinc-containing positive electrode active material matrix, and an anti-position defect is introduced, so that the structural stability is improved; according to the zinc-containing positive electrode active material, a core-shell + concentration gradient structure is adopted, a first circular ring region (with the Zn content of 0.2-3%) serves as a transition layer, the concentration change between a sphere center region (with the Zn content of 0.3-6%) and a second circular ring region (with the Zn content of 0-1%) is smoothed, Zn element dissolution is reduced, and cracking caused by too large deformation difference of materials in a Zn-rich region and a Zn-poor region during charging and discharging can also be avoided. In addition, the oxide coating layer can capture dissolved Zn ions, and Zn element dissolution is further reduced. The synergistic effect improves the cycle life of the material and the battery capacity retention ratio.

The application discloses a magnesium oxide coating performance detection system and method based on curing degree analysis, and relates to the technical field of visual detection. The application comprises the following steps: collecting the original profile of the surface of silicon steel, the rolling mark direction and the edge reference, simultaneously collecting the spreading morphology of the magnesium oxide wet film, and forming a wet film spreading bottom drawing; determining the corresponding relationship between the wet film fluctuation surface and the original profile of the base material according to the wet film spreading bottom drawing, and identifying the transition area where the liquid coverage flattens to the surface, thereby forming a spreading surface belt extending along the running direction. Through the establishment of the corresponding relationship between the wet film spreading bottom drawing and the original profile of the base material, the application can separate the interference of the base material itself on the subsequent coating detection from the source, and lay a foundation for accurately identifying the spreading surface belt. Through the short-time sequence tracking of the evolution of speckles from wandering, convergence to freezing, and in combination with parallel / cross-polarized images, the application realizes the dynamic differentiation of the surface free film area and the internal pore convergence area.

A system and method for process water and oxide coating recovery and distribution in a direct reduction system, such as a system for producing direct reduced iron. A warm lime softener is used to remove (recover) calcium, alkalinity, and other constituents from the process water system and to produce an effluent that can be further processed and returned as makeup to the process water system. The lime softening process requires lime (or similar material) to be added to the influent, thereby increasing the calcium and pH levels until they become supersaturated and precipitate. This chemical process results in effluent that is low in calcium, alkalinity, and total suspended solids.

The application provides a composite ceramic core for titanium alloy casting and a preparation method and a removal method thereof. The composite ceramic core comprises a ceramic core base and a coating attached to the surface of the base. Raw materials of the ceramic core base comprise solid powder and a binder. The solid powder comprises, in terms of mass percentage, calcium hydroxide 30-55%, magnesium oxide 29-47.5%, metal aluminum powder 10-15% and zirconium oxide 5-15%. The mass ratio of the solid powder to the binder is 1:0.01-0.05. The coating is a yttrium oxide coating. The composite ceramic core has high bending strength and open porosity, and effectively reduces the hydration reaction occurring in the process of shell dewaxing, thereby preventing the collapse of the core and realizing rapid chemical corrosion core removal.

The present application relates to the field of catalysis, in particular to a monolithic ammonia decomposition hydrogen production catalyst, a preparation method and use thereof, the monolithic ammonia decomposition hydrogen production catalyst comprising a honeycomb carrier and an active coating, the active coating being coated on the honeycomb carrier; the active coating comprising ruthenium, an alkali metal, a composite metal oxide and a carbon material; the composite metal oxide coating the carbon material; the ruthenium and the alkali metal being loaded on the composite metal oxide-coated carbon material. The monolithic ammonia decomposition hydrogen production catalyst provided by the present application has higher low-temperature ammonia decomposition activity, larger hydrogen production rate and excellent long-period stability, and the catalyst technology has simple preparation process, low energy consumption and is suitable for large-scale production application.