Abstract
The corrosion behavior of Fe–19Ni–13/21Cr–xAl (x = 0, 2, 6 at%) alloys in (vol%) 15CH4–70H2–15CO2 atmosphere was investigated at 900 °C. The presence of oxygen significantly improves the resistance to carbon attack. Continuous oxide scales formed on all alloys. A few carbides appeared in Fe–19Ni–21Cr–xAl (x = 0, 2 at%). The addition of 6 at% Al promoted the formation of external Al2O3 which could work with external Cr2O3 to resist carbon attack, while 2 at% Al only resulted in the appearance of internal alumina.
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Acknowledgments
Financial support under the NSFC Project (Nos. 51801026 and 51671203), Foundation for Young Talents of Shenzhen Polytechnic (601822K35018) and Foundation for Young Talents in Higher Education of Guangdong (601821K35055) is gratefully acknowledged.
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Liu, S., Guo, X.H., Cui, J. et al. Corrosion Behavior of Fe-Base Austenitic Alloys with Various Al Additions in a Carburizing–Oxidizing Mixture at 900 °C. Oxid Met 94, 165–177 (2020). https://doi.org/10.1007/s11085-020-09985-4
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DOI: https://doi.org/10.1007/s11085-020-09985-4