Method for forming thermal sprayed coating

Abstract

Provided is a method for forming a thermal sprayed coating, including a step of spraying a non-oxide ceramic material on a substrate to form a coating by a high velocity oxy-fuel spraying process. An average particle size of the non-oxide ceramic material is 0.1 to 5.0 μm, and a particle size distribution of the non-oxide ceramic material contains one or more peaks in each of: a particle size range of 0.1 μm or more and less than 1.0 μm; and a particle size range of 1.0 μm or more and less than 10.0 μm. The non-oxide ceramic material is dispersed in a solvent to prepare slurry 11, and the slurry 11 is fed from the exterior to flame 10 jetted from a thermal spray gun 2 to form a dense thermal sprayed coating structure.

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