Quantitative assessment of pore development at Al2O3/FeAl interfaces during high temperature oxidation [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2001. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 13 pages : digital, PDF file
- Additional Creators:
- Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Alloys of commercial grades that do not contain a reactive element, such as yttrium, often develop pores at the scale/alloy interface. The accumulation and growth of these pores greatly weaken scale adhesion. The purpose of this study is to evaluate pore development in Fe-40at% Al and determine the change in pore volume with oxidation time. Experimental results are then compared to a theoretical calculation where all vacancies are allowed to condense as voids. After removing the oxide scales that formed after various times of oxidation at 1000 C in oxygen, the alloy surface was analyzed using scanning electron microscopy (SEM) and atomic force microscopy (AFM) to determine the size and depth of interfacial pores. Results are discussed in light of possible mechanisms involved in pore formation at scale/alloy interfaces.
- Published through SciTech Connect., 04/24/2001., "lbnl--47685", 199th Meeting of the Electrochemical Society, Washington DC (US), 03/25/2001--03/29/2001., and Niu, Y.; Gesmundo, F.; Hou, Peggy Y.; Van Leiden, C.
- Funding Information:
- AC03-76SF00098 and 503001
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