Fe 3 Al, Fe 3 Al-Cr, Fe 3 Al-Cr-Mo, Ni 3 Al 및 Ni 3 Al-Cr 합금표면에 형성된 산화물 특성분석

심웅식; 이동복; Woung-Shik Shim; Dong-Bok Lee

Korean Journal of Materials Research, Vol.12, No.11, 845-849, November, 2002

DOI10.3740/MRSK.2002.12.11.845 Export Citation

Fe 3 Al, Fe 3 Al-Cr, Fe 3 Al-Cr-Mo, Ni 3 Al 및 Ni 3 Al-Cr 합금표면에 형성된 산화물 특성분석

Characterization of Oxide Scales Formed on Fe 3 Al, Fe 3 Al-Cr, Fe 3 Al-Cr-Mo, Ni 3 Al and Ni 3 Al-Cr Alloys

심웅식, 이동복^†

성균관대학교 플라즈마 응용 표면기술 연구센터

Woung-Shik Shim, and Dong-Bok Lee^†

Center for Advanced Plasma Surface Technology, Sungkyunkwan University, Suwon 440-746, Korea

E-mail:

Alloys of Fe 3 Al, Fe 3 Al-6Cr, Fe 3 Al-4Cr-1Mo, Ni 3 Al, and Ni 3 Al-2.8Cr were oxidized at 1000 ? C in air, and the oxide scales formed were studied using XRD. SEM, EPMA, and TEM. The oxide scales that formed on Fe 3 Al-based alloys consisted primarily of α - Al 2 O 3 containing a small amount of dissolved Fe and Cr ions, whereas those that formed on Ni 3 Al-based alloys consisted primarily of α - Al 2 O 3 , together with a small amount of NiAl 2 O 4 , NiO and dissolved Cr ions. For the entire alloys tested, nonadherent oxide scales formed, and voids were inevitably existed at the scale-matrix interface.

Keywords:Fe 3 Al;Ni 3 Al;Oxidation;Chromium;Aluminum

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[4] Tortorelli PF, DeVan JH, Mater. Sci. Eng. A, 153, 573 (1992)

[5] Choi SC, Cho HJ, Lee DB, Oxid. Met., 46, 109 (1996)

[6] Choi SC, Kim SH, Shin HS, Lee DB, J. Kor. Inst. Met & Mater., 35, 136 (1997)

[7] Lee DB, Jung SB, Bulletin of the Kor. Inst. Met. & Mat., 11, 3 (1998)

[8] Bye GC, Simpkin GT, J. Am. Ceram. Soc., 57, 367 (1974)

[9] Pint BA, Martin JR, Hobbs LW, Solid State Ion., 78(1-2), 99 (1995)

[10] Bunting EN, Phase Diagrams for Ceramists, American Ceramic Society, vol.1, p.121, ed., Reser MK, Ohio (1964) (1964)

[11] Lee DB, Kim GY, Kim JG, Mater. Sci. Eng. A (2003)

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