Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5370319 | Applied Surface Science | 2006 | 7 Pages |
Abstract
Thermal expansion coefficients of α alumina films formed by oxidation of an oxide dispersion strengthened (ODS) FeCrAl alloy have been determined between 20 and 900 °C using an original deflection test. This technique is based on the curvature of a dissymmetrical sample consisting of a thin and elongated metallic substrate covered on one of its large sides by an oxide film. The average value of the expansion coefficient of the compact columnar α alumina film is found to equal 10.3 Ã 10â6 Kâ1 which is higher than most values given in the literature.
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Authors
A.M. Huntz, L. Maréchal, B. Lesage, R. Molins,