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Research Letters in Materials Science
Volume 2008, Article ID 542161, 4 pages
http://dx.doi.org/10.1155/2008/542161
Research Letter

Erosion-Oxidation Response of Boiler Grade Steels: A Mathematical Investigation

National Metallurgical Laboratory, Council of Scientific and Industrial Research, Jamshedpur 831007, India

Received 6 September 2007; Accepted 16 February 2008

Academic Editor: Hiroki Habazaki

Copyright © 2008 S. K. Das et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A ductile erosion model embodying the mechanisms of erosion involving cutting wear and repeated plastic deformation has been developed to predict erosion rates of boiler grade steels. The issue of erosion-oxidation interaction has also been addressed to further predict the mass loss resulted from this composite mechanism. A deterministic formalism for the kinetics of oxide-scale growth and a probabilistic approach to characterize the material loss are employed to describe simultaneous actions of high-temperature oxidation and mechanical erosion. The model predictions are in good agreement with the published data.