Processing and Excellent Oxidation Resistance of Nanocrystalline Fe-Cr Alloys

Abstract:

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Nanocrystalline and microcrystalline Fe-10Cr alloys were prepared by high energy ball milling followed by compaction and sintering, and then oxidized in air for 52 hours at 400°C. The oxidation resistance of nanocrystalline Fe-10Cr alloy as determined by measuring the weight gain after regular time intervals was compared with that of the microcrystalline alloy of same chemical composition (also prepared by the same processing route and oxidized under identical conditions). Oxidation resistance of nanocrystalline Fe10Cr alloy was found to be in excess of an order of magnitude superior than that of microcrystalline Fe10Cr alloy. The paper also presents results of secondary ion mass spectrometry of oxidized samples of nanocrystalline and microcrystalline Fe-Cr alloys, evidencing the formation of a more protective oxide scale in the nanocrystalline alloy.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

1122-1125

DOI:

10.4028/www.scientific.net/MSF.654-656.1122

Citation:

R. K. Gupta et al., "Processing and Excellent Oxidation Resistance of Nanocrystalline Fe-Cr Alloys", Materials Science Forum, Vols. 654-656, pp. 1122-1125, 2010

Online since:

June 2010

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$35.00

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