Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 3 No. 3 September 1993|
（Northeastern University; Shenyang 110006; China）
Abstract:The homogeneous dispersive Y2O3 particles were melt-doped on the surface of a superalloy by laser alloying and the effect of Y2O3 on the oxidation resistance of the alloy were investigated. The results showed that compact α-Al2O3 oxide scales formed continuously on the alloy surface and the internal oxidation was eliminated and oxidation rate decreased. Therefore, the oxidation resistanee of the alloy was improved.
Key words: superalloy Y2O3 particle laser surface alloying oxidation resistance