HEAT RESISTANT TI OR TI ALLOY HAVING SUPERIOR OXIDATION RESISTANCE AT HIGH TEMPERATURE

摘要

PURPOSE:To obtain heat resistant Ti or Ti Alloy having superior oxidation resistance at high temp. and satisfactory adhesion without deteriorating the workability of the base material by forming an Mo-rich layer in the surface layer of Ti or Ti alloy by ion implantation. CONSTITUTION:An Mo-rich layer is formed in the surface layer of Ti or Ti alloy by ion implantation. The desired number of Mo ions implanted is about =1.2X1016 per 1cm2. A dense thin oxidized coating film having high adhesion to the base material can be formed and heat resistant Ti or Ti alloy having superior oxidation resistance at high temp. is obtd. This Ti or Ti alloy has superior oxidation resistance even in a high temp. range of about =500 deg.C.