PURPOSE: To obtain a heat resistant coating member excellent in wear resis tance, etc., over the region from low to high temp. by coating the top of a substrate of a metallic material, etc., with a hard layer of titanium-aluminum oxycarbonitride in a specified thickness.
CONSTITUTION: The top of a substrate of a metallic material such as stainless steel, a sintered alloy such as a cemented carbide or a ceramic sintered compact such as an Al2O3 sintered compact is coated with a hard layer of titanium- aluminum oxycarbonitride by CVD or PVD in 0.1-1.5mm thickness. The hard layer is represented by the formula (TiaAlb)(CxNyOz)R (where 0.95≥a≥0.05, a+b=1, 0.89≥X≥0.1, 0.89≥Y≥0.1, X+Y+Z:1 and 1.10≥R≥0.8). The objective heat resistant coating member excellent in resistance to oxidation, thermal shock, chipping and fusion over the region from low to high temp. is obtd.
SATO MANABU
KODAMA HIROYUKI
