Journal of Surface Science and Engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지

Isothermal Oxidation Behaviour of Domestic Superalloys at Elevated Temperature

국산 Superalloy의 고온 산화 거동

  • 강은철 (한국원자력안전기술부, 안전공학부) ;
  • 전영건 (한국원자력연구소, 연구 품질관리소) ;
  • 김길식 (한국원자력연구소, 연구 품질관리소)
  • Published : 1991.11.01
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Abstract

The isothermal oxidation behaviour of commercial superalloys produced in Korea was investigated by using Cahn-2000 microbalance in air at $1000^{\circ}C$ and $1100^{\circ}C$. The effect of alloying elements on the isothermal oxidation was studied by examination of the oxide structures, their morphologies, and EDS linescanning and mapping of cross-section of oxidized specimens. Generally, external Cr2O3 films were formed on all alloy surface, but were not pure, The effect on the oxidation behaviour of refractory elements such as Nb, Mo in Inconel 718 was considered to be deleterious, and the formation of internal Al oxide in Inconel 601 was beneficial.

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