Model for the Protective Oxidation of Mg-Ca Alloys Containing Be at Elevated Temperature

Abstract:

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The liquid oxidation behavior of Mg-Ca base alloys containing Be has been presented in this paper. The ignition temperature test and microbalance measurement indicated that the oxide film formed at elevated temperature was protective, resulting in the improved oxidation resistance and ignition-proof properties. A Ca-rich zone was found at the very near surface of oxide layer. With Be addition the oxide layer became dense and compact, which was impermeable for the rapid diffusion of oxygen and magnesium through the oxide layer. It was concluded that the formation of BeO in the oxide layer suppressed the continuous growth of the oxide layer.

Info:

Periodical:

Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi

Pages:

637-640

DOI:

10.4028/www.scientific.net/MSF.449-452.637

Citation:

Y.B. Huang et al., "Model for the Protective Oxidation of Mg-Ca Alloys Containing Be at Elevated Temperature", Materials Science Forum, Vols. 449-452, pp. 637-640, 2004

Online since:

March 2004

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Price:

$35.00

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