Production methods of thermal spraying ceramic coating materials

Ceramic materials are brittle, basically preparation of coating with thermal spraying technique in powder form, mechanical process and physical-chemical process are the two main ways to preparation of thermal spraying ceramic coating powder materials. Mechanical process includes crushing method，atomization method, mixing method, mechanical Alloying and so on, and physical-chemical process contains bonding process, chemical reduction method, pyrolysis method, quench method, combustion method etc. . liquidity and shape pf powder, apparent density, sedimentation efficiency and other wholesomeness are affected by the preparation way of ceramic powder, so it’s have great influence on thermal spraying process performance.

Except powder form of thermal spraying powder ceramic coating materials, the other form is composite wire which contains ceramic particles, it mainly includes filling composite wires and flexible composite wires. The former is made of mixing, heating, squeezing of ceramic powder and seldom adhesives. Common coating metal materials of Metal filling materials composite wire are Ni, Cu, Al, steel, stainless steel and so on,  common ceramic particles are WC, Al2O3, TiO2, Cr2O3 etc.

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