Patent ID: 7942975
Filing Date: 2011-05-17
Classification: B08B,C23C,Y10T

Abstract:
1. A method of cleaning a ceramic sprayed member having a predetermined ceramic material thermally sprayed on a surface thereof, comprising: a stabilizing step of chemically bonding the surface of the ceramic sprayed member and water to each other to stabilize the water; and a desorbing step of desorbing water physically adsorbed on the surface of the ceramic sprayed member, wherein said stabilizing step includes carrying out hydration processing in which the ceramic sprayed member is exposed to a temperature range of 100° C. to 300° C., a pressure not lower than 202.65 kPa, and a relative humidity not lower than 90%, and wherein in said desorbing step, a gas highly reactive with water is introduced into a space surrounding the ceramic sprayed member, and the introduced gas is selected from the group consisting of a methylsilane compound being trimethylchlorosilane, dimethyldichlorosilane, monomethyltrichlorosilane, or tetrachlorosilane, and a water-reactive oxygen/halogen compound being dichloropropane, dibromopropane, nitrosyl chloride, carbonyl chloride (phosgene), carbonyl fluoride, diborane, chlorine, fluorine, thionyl bromide, iodomethyl propane, acetyl chloride, acetone dimethyl acetal, carbon monoxide, hydrogen chloride, or trichloroboron.