Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Characterization of Oxide Scales Formed on Ni3Al-7.8%Cr-1.3%Zr-0.8%Mo-0.025%B

Ni3Al-7.8%Cr-1.3%Zr-0.8%Mo-0.025%B 합금의 고온산화막분석

  • Kim, Gi-Yeong (Center for Advanced Plasma Surface Technology, Sungkyunkwan Uiversity) ;
  • Lee, Dong-Bok (Center for Advanced Plasma Surface Technology, Sungkyunkwan Uiversity)
  • 김기영 (성균관대학교 플라즈마 응용 표면기술 연구센터) ;
  • 이동복 (성균관대학교 플라즈마 응용 표면기술 연구센터)
  • Published : 2002.03.01
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Abstract

The oxide scales formed on $Ni_3Al$-7.8%Cr-1.3%Zr-0.8%Mo-0.025%B after oxidation at 900, 1000 and 110$0^{\circ}C$ in air were studied using XRD, SEM, EPMA and TEM. The oxide scales consisted primarily of $NiO,\; NiAl_2O_4,\;{\alpha}-Al_2O_3,\; monoclinic-ZrO_2,\; and \;tetragonal-ZrO_2$. The outer layer of the oxide scale was rich in Ni-oxides, whereas the internal oxide stringers were rich in Al-oxides and $ZrO_2$. Within the above oxide scales, Cr and Mo tended to exist as dissolved ions.

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References

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