Journal of Surface Science and Engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지

The effect of stable oxide dispersoid on the high temperature oxidation behavior of Ni-Cr alloys

Ni-Cr 합금의 고온산화특성에 미치는 안정한 산화물 분산체 효과

  • 유재민 (한양대학교 재료공학과) ;
  • 박상환 (한국과학기술연구원 구조세라믹스 연구실) ;
  • 강성군 (한양대학교 재료공학과)
  • Published : 1991.12.01
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Abstract

The oxidation behavior of Ni-6wt.% Cr alloys with various concentration of alumina dispersions(5vol.% 10vol.%) was determined at 1000 and 110$0^{\circ}C$ in oxygen of 1 atm. pressure. Some general observations were ascertained. These include: (a) the addition of alumina dispersoids significantly increased the oxidation resistance of Ni-6wt.% Cr alloy; (b) the rate of oxidation was distinctly decreased as a function of the volume percent of oxide dispersion; and (c) the presence of alumina dispersions promoted the formation of continous, protective Cr2O3 layer at 6 wt.% Cr.

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