The Oxidation of Co-10Cr Alloys in 1 Atm of Pure O2 at 700 and 800οC

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The oxidation of binary Co-10Cr alloys in 1 atm of pure O2 at 700 and 800°C was investigated. It indicated that the oxidation followed approximately the parabolic rate law (n=2). The parabolic rate constants as functions of temperature were 2.03×10-11, 7.05×10-10 g2cm-4s-1, respectively. The scales formed on Co-10Cr alloys were double-layered. The outer layer composed of large columnar CoO grains was relatively compact, while the inner CoO layer was porous, fine-grained and doped by cobaltous oxide CoO and spinel CoCr2O4.

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Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu

Pages:

1546-1549

DOI:

10.4028/www.scientific.net/AMR.284-286.1546

Citation:

J. H. Xiang et al., "The Oxidation of Co-10Cr Alloys in 1 Atm of Pure O2 at 700 and 800οC", Advanced Materials Research, Vols. 284-286, pp. 1546-1549, 2011

Online since:

July 2011

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$35.00

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