한국재료학회지 (Korean Journal of Materials Research)

  • 제13권12호
  • /
  • Pages.791-795
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  • 2003
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  • 1225-0562(pISSN)
  • /
  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
권호 표지
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Fe-XAl-0.1Y(X =5, 10, 14 wt.%) 합금의 고온 산화거동

High Temperature Oxidation Behaviour of Fe-XAl-0.1Y(X = 5, 10, 14 wt.%) Alloys

  • 이병우 (부경대학교 신소재공학부) ;
  • 서원찬 (부경대학교 신소재공학부) ;
  • 박찬 (부경대학교 신소재공학부)
  • Lee, Byung-Woo (Division of Materials Science and Engineering, Pukyong National Univ.) ;
  • Seo, Won-Chan (Division of Materials Science and Engineering, Pukyong National Univ.) ;
  • Park, Chan (Division of Materials Science and Engineering, Pukyong National Univ.)
  • 발행 : 2003.12.01
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초록

The oxidation behaviour of Fe-XAl-0.1Y(X= 5, 10, 14 wt.%) alloys were investigated at 1073, 1173 and 1273 K in oxygen/ nitrogen gas atmosphere for 1∼24 hrs using SEM/EDX, XRD and EPMA. The weight changes of Fe-XAl-0.1Y alloys followed the parabolic rate law. Oxidation rates of 10Al and 14Al alloys were ten times lower than that of 5Al alloys. This is attributed to the formations of protective $A1_2$$O_3$oxides on the surface of 10Al and 14Al alloys. The oxidation product scales of the 5Al alloy showed that thick iron oxide scales($Fe_2$$O_3$, $Fe_3$$O_4$) containing porosities formed during early stages of oxidation. With continued oxidation, aluminum oxide was formed at the alloy/scale interface.

키워드

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