Fe-XAl-0.1Y(X =5, 10, 14 wt.%) 합금의 고온 산화거동

이병우; 서원찬; 박찬; Byung Woo Lee; Won Chan Seo; Chan Park

Korean Journal of Materials Research, Vol.13, No.12, 791-795, December, 2003

DOI10.3740/MRSK.2003.13.12.791 Export Citation

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^†, 서원찬, 박찬

부경대학교 신소재공학부

Byung Woo Lee^†, Won Chan Seo, and Chan Park

Division of Materials Sceince and Engineering, Pukyong National University, 608-739, Busan, Korea

E-mail:

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.

Keywords:oxidation behaviour;oxidation rates;A1 2 O 3 oxides

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[7] Lee BW, Park HI, Kim JS, Lee KH, Kim HS, Kor. J. Mat. Res., 7(10), 898 (1997)

[8] Kao CH, Wan CM, J. Mat. Sci., 23, 1943 (1988)

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