Steam Oxidation Behavior of Advanced Steels and Ni-Based Alloys at 800 °C

被引:0
|
作者
T. Dudziak
L. Boroń
V. Deodeshmukh
J. Sobczak
N. Sobczak
M. Witkowska
W. Ratuszek
K. Chruściel
机构
[1] Foundry Research Institute,Faculty of Metals Engineering and Industrial Computer Science
[2] Haynes International,undefined
[3] AGH University Science and Technology,undefined
关键词
advanced steels; Haynes; internal oxidation; steam oxidation;
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摘要
This publication studies the steam oxidation behavior of advanced steels (309S, 310S and HR3C) and Ni-based alloys (Haynes® 230®, alloy 263, alloy 617 and Haynes® 282®) exposed at 800 °C for 2000 h under 1 bar pressure, in a pure water steam system. The results revealed that all exposed materials showed relatively low weight gain, with no spallation of the oxide scale within the 2000 h of exposure. XRD analysis showed that Ni-based alloys developed an oxide scale consisting of four main phases: Cr2O3 (alloy 617, Haynes® 282®, alloy 263 and Haynes® 230®), MnCr2O4 (alloy 617, Haynes® 282® and Haynes® 230®), NiCr2O4 (alloy 617) and TiO2 (alloy 263, Haynes® 282®). In contrast, advanced steels showed the development of Cr2O3, MnCr2O4, Mn7SiO12, FeMn(SiO4) and SiO2 phases. The steel with the highest Cr content showed the formation of Fe3O4 and the thickest oxide scale.
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页码:1044 / 1056
页数:12
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