Corrosion of Inconel 713 Alloy in an Ar-1% SO2 Atmosphere between 800 and 1100

The Ni-based superalloy, Inconel 713, was corroded between 800 and 1100 ℃ for up to 100 h in an Ar-1% SO2 atmosphere. It displayed good corrosion resistance, because the corrosion progressed mainly via oxidation rather than sulfidation. The corrosion products were α-Al2O3, Cr2O3, TiO2, NiO, NiAl2O4,...

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Published inKorean Journal of Metals and Materials Vol. 51; no. 7; pp. 505 - 513
Main Authors Lee, Dong Bok, Bak, Sang Hwan
Format Journal Article
LanguageEnglish
Published 대한금속·재료학회 05.07.2013
Subjects
재료공학
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ISSN1738-8228
2288-8241
DOI10.3365/KJMM.2013.51.7.505

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Summary:The Ni-based superalloy, Inconel 713, was corroded between 800 and 1100 ℃ for up to 100 h in an Ar-1% SO2 atmosphere. It displayed good corrosion resistance, because the corrosion progressed mainly via oxidation rather than sulfidation. The corrosion products were α-Al2O3, Cr2O3, TiO2, NiO, NiAl2O4, and NiCr2O4. Sulfur was sometimes weakly segregated around the scale-alloy interface. Preferential oxidation occurred along the grain boundaries of the matrix. Except in these areas, uniform oxidation occurred, forming thin scales. The formed scales were prone to spallation. KCI Citation Count: 0
Bibliography:http://210.101.116.102/journal_korea/detail_01.asp?a_key=3145640
G704-000085.2013.51.7.002
ISSN:1738-8228
2288-8241
DOI:10.3365/KJMM.2013.51.7.505