34 results about "Suspension plasma spray" patented technology

The invention relates to a slurry for suspension plasma spraying and a method for forming sprayed coating. The invention provides a slurry for use in suspension plasma spraying including a dispersionmedium and rare earth oxide particles, the rare earth oxide particles having a particle size D50 of 1.5 to 5 [mu]m and a BET specific surface area of less than 1 m2 / g, and a content of the rare earthoxide particles in the slurry being 10 to 45 wt %.

An integrated apparatus and method comprises a plasma gun with a water supply, treatment fluid supply, and controls, the combination of which is adapted for directing a plume onto a surface of a three-dimensional part to treat the surface; and for controlling injection of water into the plume with the plume directed onto an adjacent surface to clean debris and undesired material from the adjacent surface; and for subsequently directing the plume (without water) onto the adjacent surface to treat the adjacent surface. The apparatus and method are particularly useful in suspension plasma spray systems, but are not believed to be limited to that.

Apparatus (1) for injecting a liquid in an area of a thermal spray gun (100). The apparatus (1) includes an injector cleaning device (10) having an inlet connectable (19) to at least one feedstock supply line (18), an inlet connectable (17) to at least one gas supply line (16), and an inlet connectable (21) to at least one liquid medium supply line (20). An injector (30) orifice is coupled to the injector cleaning device (10) and is adapted to at least one of inject a liquid jet into a hot stream created in the area of the thermal spray gun (100) and receive feedstock, gas and liquid passing into the inlets.

The present invention relates to a preparation method for porous hydroxyapatite coatings. In particular, it is a method of using suspension plasma spraying to prepare porous hydroxyapatite coatings, which belongs to the technical field of biomedical material preparations. The present invention added a pore-forming agent into the hydroxyapatite suspension with a solid content of 16%-45%. After full stirring, the feedstock materials for plasma spraying were transferred into the injection system, and injected into the high temperature area of the central plasma flame. Then, the feedstock materials made the heat exchange with the high plasma flame of plasma spraying gun. Then the sprayed raw materials were subjected to breakup and refinement of the droplets, solvent evaporation, the decomposition and gasification of the pore-forming agent and melting of feedstock materials. Finally, the porous hydroxyapatite coatings are directly deposited onto the substrate surfaces of the biomedical materials.

Provided is a slurry for suspension plasma spraying, which is a spray material used for suspension plasma spraying in an atmosphere including an oxygen-containing gas, contains 5-40 mass% of rare earth fluoride particles having a maximum particle diameter (D100) of 12 mum or less, and contains one or more types of solvent selected from among water and organic solvents. A rare earth acid fluoride-containing sprayed film, in which process shift and particle generation hardly occur, can be stably formed on a base material by carrying out suspension plasma spraying in an atmosphere including an oxygen-containing gas. A spraying member provided with this sprayed film exhibits excellent corrosion resistance to halogen-based gas plasma.

The invention discloses a preparation method of a suspension plasma spray coating on the surface of a NdFeB magnet, comprising the following steps: (1) preparing a rare earth suspension; (2) using the suspension plasma spraying technology to spray the two sides of the NdFeB magnet , to obtain a suspension plasma spray coating; (3) The magnet after spraying is treated by grain boundary thermal diffusion method. Plasma spraying technology combined with grain boundary thermal diffusion technology has the characteristics of high production efficiency and environmental friendliness, which can effectively increase the diffusion depth of heavy rare earth elements in magnets, promote the improvement of magnetic properties, and also help accelerate the industry of grain boundary diffusion technology. process.

Disclosed is a method of making an electrochemical cell, comprising: depositing an anode layer on a surface of a porous metal support layer; depositing an electrolyte layer on a surface of the anode layer, wherein the electrolyte layer is deposited via suspension plasma spray, wherein the electrolyte layer conducts protons; and depositing a cathode layer on a surface of the electrolyte layer. Also disclosed is a stack comprising two or more of the electrochemical cell.

A slurry for use in suspension plasma spraying including a dispersion medium and rare earth oxide particles, the rare earth oxide particles having a particle size D50 of 1.5 to 5 μm and a BET specific surface area of less than 1 m2 / g, and a content of the rare earth oxide particles in the slurry being 10 to 45 wt %.

The invention relates to a micron-order supersonic speed suspension plasma spraying device and method. Pinhole type internal feeding powder feeding design is provided, a powder feeding mechanism commonly using a Laval type plasma spraying gun on engineering is transformed, sprayed powder (the grain size ranges from 500 nanometers-150 micrometers), absolute ethyl alcohol, an additive and deionizedwater are reasonably matched, and stable liquid slurry capable of achieving sufficient suspension is obtained; and a mechanical peristaltic pump is used for conveying the suspended liquid slurry to animproved pin type internal feeding opening of the supersonic speed Laval spraying gun, and after the suspension slurry and supersonic speed plasma jet flow generate sufficient heat exchange, the suspension slurry is deposited on a base plate through a supersonic spraying process to form a coating. The grain size of particles needing to be sprayed by the spraying device can reach 150 micrometers,the shape, the slurry viscosity and the fluidity of the sprayed powder are free of limitation, the deposition efficiency can reach 5-7 micrometers per pass, and the coating preparing efficiency can beimproved by nearly 7 times.

The invention relates to a preparation method of a thermal barrier coating with an interlayer pore structure, which comprises La 2 o 3 , CeO 2 , ZrO 2 The powder is heat-treated; the heat-treated powder is mixed with a dispersant in proportion, and deionized water is added for ball milling to obtain a slurry; La 2 o 3 , CeO 2 , ZrO 2 The molar ratio between the powders is 0.5:(1-x):x, wherein 0≤x≤0.8; the slurry after ball milling is dried and heat-treated to form a phase to obtain a phase-forming powder; the phase-forming powder is mixed with deionized water and dispersed The mixture is ball-milled to obtain a suspension; the suspension is used as a raw material, and the suspension plasma spraying method is used to spray on the base material. The present invention adopts the La prepared by the suspension plasma spraying method 2 (Ce 1‑x Zr x ) 2 o 7 The coating has excellent high-temperature phase stability, and the prepared coating has a uniform interlayer pore structure, which is conducive to reducing the thermal conductivity of the coating and improving the thermal cycle life of the coating.

The present invention relates to a method for coating at least one surface of a solid substrate with at least one layer comprising at least one ceramic compound by the technique of Suspension Plasma Spraying (SPS), wherein at least one solid particle of at least one ceramic compound injecting the suspension into a plasma jet and subsequently projecting a hot jet containing the solid particle suspension onto the surface of the substrate, whereby a layer containing at least one ceramic compound is formed on the surface of the substrate; the method is characterized in that, at In the suspension, at least 90vol% of the solid particles have a larger size (called d 90 ), such as a diameter of less than 15 μm, preferably less than 10 μm, and at least 50 vol% of the solid particles have a larger size, such as diameter (referred to as d 50 ) is not less than 1 μm. The invention also relates to a substrate coated with at least one layer obtained by the method. The invention also relates to components comprising said coated substrate. The invention also relates to the use of said layer to protect solid substrates from degradation caused by contaminants such as CMAS.