Stability domain of alumina thermally grown on Fe–Cr–Al-based model alloys and modified surface layers exposed to oxygen-containing molten Pb

Jianu, A.; Fetzer, R.; Weisenburger, A.; Doyle, S.; Bruns, M.; Heinzel, A.; Hosemann, P.; Mueller, G.

doi:10.1016/j.jnucmat.2015.12.009

Stability domain of alumina thermally grown on Fe–Cr–Al-based model alloys and modified surface layers exposed to oxygen-containing molten Pb

Journal Article · Sat Dec 12 00:00:00 EST 2015 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2015.12.009· OSTI ID:1713058

Jianu, A. ^[1]; Fetzer, R. ^[2]; Weisenburger, A. ^[2]; Doyle, S. ^[2]; Bruns, M. ^[2]; Heinzel, A. ^[2]; Hosemann, P. ^[3]; Mueller, G. ^[2]

Karlsruhe Inst. of Technology, Leopoldshafen (Germany); UC Berkeley
Karlsruhe Inst. of Technology, Leopoldshafen (Germany)
Univ. of California, Berkeley, CA (United States)

The paper gives experimental results concerning the morphology, composition, structure and thickness of the oxide scales grown on Fe–Cr–Al-based bulk alloys during exposure to oxygen-containing molten lead. The results are discussed and compared with former results obtained on Al-containing surface layers, modified by melting with intense pulsed electron beam and exposed to similar conditions. Here, the present and previous results provide the alumina stability domain and also the criterion of the Al/Cr ratio for the formation of a highly protective alumina layer on the surface of Fe–Cr–Al-based alloys and on modified surface layers exposed to molten lead with 10^–6 wt.% oxygen at 400–600 °C. The protective oxide scales, grown on alumina-forming Fe–Cr–Al alloys under the given experimental conditions, were transient aluminas, namely, kappa-Al₂O₃ and theta-Al₂O₃.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of California, Los Angeles, CA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0005941

OSTI ID:: 1713058

Alternate ID(s):: OSTI ID: 22590235
OSTI ID: 1396702

Journal Information:: Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Vol. 470; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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14 SOLAR ENERGY
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Stability domain of alumina thermally grown on Fe–Cr–Al-based model alloys and modified surface layers exposed to oxygen-containing molten Pb

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