Method for forming fluoride spray coating and fluoride spray coating covered member

摘要

[Problem] To provide a fluoride spray coating covered member adhered with a fluoride spray coating having excellent properties on quality by suppressing a thermal decomposition reaction and an oxide reaction, and to propose a method for forming a cover by firmly adhering the coating.;[Solution] A method for forming a fluoride spray coating in an implantation structure onto a substrate surface by spraying particles of a fluoride spraying material onto a substrate surface or a pretreated substrate surface, if necessary through an undercoat layer or spray particle dotted parts of carbide cermet, at a flying velocity of particles of not less than 500 m/sec with an inert gas as a working gas for coating formation at an inert gas temperature of 600° C.-1300° C. as well as a fluoride spray coating covered member.

主权项

1. A method for forming a fluoride spray coating, comprising:
spraying a fluoride spraying material onto a substrate surface or a pretreated substrate surface at a flying velocity of not less than 500 m/sec in a spraying gas atmosphere maintained at a temperature of 800° C. -1300° C. with a spray gun using an inert gas such as Ar, N2, He or a mixture thereof as a working gas for coating formation to form a fluoride spray coating adhered thereon so as to provide an implantation structure such that at least a part of the fluoride spraying material is adhered so as to bite into concave portions of the substrate surface or an undercoat layer surface of carbide cermet material or into a gap between particles in the spray particle dotted parts of carbide cermet material, or bonded at a state of skewing at its tip portion.