Effect of shot blasting on oxidation behavior of TP304H steel at 610-770 deg C in water vapor

Shot blasting on a tube steel of TP304H can greatly improve the oxidation resistance at 650-770 deg C in water vapor and an appropriate blasting intensity reached the best result. SEM and EPMA analysis indicated that the structure of the oxide scale turned from multi-layer to monolayer after blastin...

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Bibliographic Details
Published inMaterials letters Vol. 60; no. 3; pp. 339 - 344
Main Authors Xingeng, Li, Jiawen, He
Format Journal Article
LanguageEnglish
Published 01.02.2006
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Summary:Shot blasting on a tube steel of TP304H can greatly improve the oxidation resistance at 650-770 deg C in water vapor and an appropriate blasting intensity reached the best result. SEM and EPMA analysis indicated that the structure of the oxide scale turned from multi-layer to monolayer after blasting and Cr2O3 is predominant. The untreated sample characterized in multi-layer oxide was composed of Fe in the outer layer and Fe and Cr underneath. For blasted one, the increase of diffusion rate of Cr and the decrease of effective diffusion energy of scale led to a uniform Cr-rich oxide layer, which was dense and protective and the oxidation resistance was increased.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0167-577X
DOI:10.1016/j.matlet.2005.08.046