Thermal expansion coefficient of alumina films developed by oxidation of a FeCrAl alloy determined by a deflection technique

被引：53

作者：

Huntz, A. M. ^{[1
]}

Marechal, L.

Lesage, B.

Molins, R.

机构：

[1] Univ Paris 11, CNRS, LEMHE, UMR 8647,Ctr Orsay, F-91405 Orsay, France

[2] CNRS, ENSMP, UMR 7633, Ctr Mat, F-91003 Evry, France

来源：

APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 22期

关键词：

thermal expansion coefficient; alumina films; deflection tests; FeCrAl;

D O I：

10.1016/j.apsusc.2005.08.116

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thermal expansion coefficients of alpha alumina films formed by oxidation of an oxide dispersion strengthened (ODS) FeCrAl alloy have been determined between 20 and 900 degrees 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 alpha alumina film is found to equal 10.3 x 10(-6) K-1 which is higher than most values given in the literature. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：7781 / 7787

页数：7

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