The morphology of thermally grown {alpha}-Al{sub 2}O{sub 3} scales on Fe-Cr-Al alloys
- Univ. of California, Santa Barbara, CA (United States). Materials Dept.
The morphology and growth kinetics of protective {alpha}-Al{sub 2}O{sub 3} scales formed during high-temperature oxidation of the Fe-Cr-Al and Fe-Cr-Al-Y alloys were studied. Scanning electron microscopy observations were focused on the oxide-wrinkling phenomenon and formation of interfacial cavities in the course of oxidation of the yttrium-free alloy. In this paper, emphasis is also placed on the effects of surface preparation and yttrium additions on the scale and scale-alloy interface structures. Several features of alumina morphology, which have not received sufficient attention previously, are discussed in the context of existing models; some critical issues are outlined.
- OSTI ID:
- 351488
- Journal Information:
- Oxidation of Metals, Journal Name: Oxidation of Metals Journal Issue: 5-6 Vol. 51; ISSN OXMEAF; ISSN 0030-770X
- Country of Publication:
- United States
- Language:
- English
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