This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1016/j.corsci.2017.05.017 in citations.
External α-Al 2 O 3 scale on Ni-base alloy 602 CA. – Part I: Formation and long-term stability
External α-Al 2 O 3 scale on Ni-base alloy 602 CA. – Part I: Formation and long-term stability
A multi-step oxidation treatment was developed for the NiCrAl-base alloy 602 CA to promote the growth of protective α-Al2O3 scales during exposure at 1100–1200 °C in air. Above 1000 °C, the alloy forms external chromia scales accompanied by internal alumina precipitation. On the other hand, external...
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Personal Name(s): | Chyrkin, A. (Corresponding author) |
---|---|
Pillai, R. / Galiullin, T. / Wessel, E. / Grüner, D. / Quadakkers, W. J. | |
Contributing Institute: |
Werkstoffstruktur und -eigenschaften; IEK-2 |
Published in: | Corrosion science, 124 (2017) S. 138-149 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2017
|
DOI: |
10.1016/j.corsci.2017.05.017 |
Document Type: |
Journal Article |
Research Program: |
Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) Efficient and Flexible Power Plants |
Publikationsportal JuSER |
A multi-step oxidation treatment was developed for the NiCrAl-base alloy 602 CA to promote the growth of protective α-Al2O3 scales during exposure at 1100–1200 °C in air. Above 1000 °C, the alloy forms external chromia scales accompanied by internal alumina precipitation. On the other hand, external alumina grows on alloy 602 CA surface at 800–900 °C. The alloy specimens were pre-oxidized at 800 °C to form the external α-Al2O3 scale and further exposed at 1100 and 1200 °C. The resulting oxide scales were characterized with SEM/EDX, EBSD, and TEM. The pre-grown alumina scale demonstrated good adherence, long-term stability and healing capability. |