Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1622527 | Journal of Alloys and Compounds | 2009 | 6 Pages |
Abstract
The phase equilibria and oxidation behavior of Ir–Y binary alloys have been investigated. A phase diagram at the Ir-rich end in the Ir–Y binary system has been proposed on the basis of experimental results. Iridium is found to dissolve little Y in the FCC solid solution. The pure-Ir and Ir–Y binary alloys exhibit severe weight loss upon air-exposure at 1373 K with elapsed time. Protective oxide layers are not formed on the surface of the alloys with Y up to, at least, 20 at.%. The kinetics of the oxidation is controlled by the formation and sublimation of Ir oxides at the surface.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Nobuaki Sekido, Hideyuki Murakami, Yoko Yamabe-Mitarai,