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Microstructural corrosion behavior of austenitic Fe-21Mn-2.5Al-0.04C alloy in oxidizing-sulfidizing environments

Authors
Journal
Metallography
0026-0800
Publisher
Elsevier
Publication Date
Volume
23
Issue
1
Identifiers
DOI: 10.1016/0026-0800(89)90041-4

Abstract

Abstract Fe-21Mn-2.5Al-0.04C alloy was exposed to SO 2-O 2 mixed gas environments at 900°C. The morphologies of the scales formed on the alloy investigated were examined by scanning electron microscopy and x-ray mapping techniques. The results showed that multilayered scales were formed, consisting of an external (FeMn) 2O 3 blocky oxide, an intermediate (FeMn) 2O 3 internal oxide, and an innermost Mn(Fe)S sulfide.

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