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Plasma-Nickel Mesh Coating with Zirconia Electrolysis of water for hydrogen production is currently an important industrial method for hydrogen generation. To enhance the adsorption surface area of nickel meshes, Guangzhou Sanxin Technology Development first coats the surface of the nickel mesh with a nickel-aluminum alloy. Subsequently, this nickel-aluminum alloy is reacted with a concentrated sodium hydroxide solution; most of the aluminum dissolves, leaving behind numerous micropores. As a result, the surface of the nickel mesh develops a three-dimensional porous structure, significantly increasing its adsorption surface area and thereby boosting catalytic activity and improving hydrogen-production efficiency. Guangzhou Sanxin provides nickel mesh coating equipment, plasma spraying equipment, and automated production lines, along with comprehensive technical support.
To isolate metallic foreign objects, lithium battery material manufacturers apply protective coatings to components of production equipment that come into contact with the materials. The three key properties—wear resistance, high-temperature resistance, and non-metallic nature—make tungsten carbide spraying an ideal choice; consequently, most lithium battery material production processes incorporate extensive tungsten carbide spraying for protection.
Introduction to Plasma Spraying Technology Plasma spraying is a thermal spraying method that uses a plasma arc as the heat source and relies primarily on spray powder materials. Steps of Plasma Spraying During plasma spraying, a direct-current arc is generated between the cathode and the anode (nozzle). This arc heats and ionizes the introduced working gas, transforming it into a high-temperature plasma that is ejected from the nozzle, forming a plasma flame. The powder material is fed into the flame by a carrier gas, where it is melted, accelerated, and sprayed onto the substrate material to form a coating. The working gas can be argon, nitrogen, or a mixture of these gases with hydrogen added; alternatively, a mixed gas of argon and helium can also be used.
5. The plasma spheroidization powder-making equipment includes: a powder collection tank, an exhaust gas filter, a plasma power supply, a control cabinet, a powder feeder, a transfer box, and a chiller, with a power rating of 80 kilowatts. 6. The powder processed by the plasma arc has a throughput of 2.8 to 10 kg/hour, and the powder feeder can deliver particles in the size range of 5–200 μm.
The Sanxin SX-80 plasma spraying production line is being used for coating tungsten carbide components at a hard alloy enterprise in Jiangsu Province. Plasma spraying is a surface enhancement and modification technology that endows substrate surfaces with properties such as wear resistance, corrosion resistance, resistance to high-temperature oxidation, electrical insulation, thermal insulation, radiation shielding, reduced friction, and sealing. In plasma spraying, a plasma arc powered by direct current serves as the heat source, heating ceramic, alloy, metal, and other materials to a molten or semi-molten state. These materials are then sprayed onto the pre-treated workpiece surface at high velocity, forming a firmly bonded surface layer.
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