TY - GEN
T1 - Corrosion of nickel and iron-based superalloys in high temperature gas environments
AU - Yeh, T. K.
AU - Chang, H. P.
AU - Wang, M. Y.
AU - Kai, J. J.
AU - Yuan, T.
PY - 2012
Y1 - 2012
N2 - High-temperature gas-cooled reactors (HTGRs) with helium gas as the primary coolant have been considered as Generation IV nuclear power reactor systems. Several iron- and nickel-based superalloys, including Incoloy 800H, Hastelloy X, and Inconel 617, are potential structural materials in pressure boundary components, such as the intermediate heat exchanger (IHX) in an HTGR. Impurities in a helium coolant, such as H2O and O2, can interact with structural materials at working temperatures of >900 °C, causing serious degradation. This study investigates the oxidation behavior of three selected alloys (Hastelloy X, Incoloy 800H, and Inconel 617) in high-temperature, gaseous environments with various levels of O2 and H2O. A series of corrosion tests were conducted at test temperatures of 650 °C, 750 °C, 850 °C and 950 °C under various coolant compositions of dry air, 1% O2, 10% humidity, and 50% humidity. © The Electrochemical Society.
AB - High-temperature gas-cooled reactors (HTGRs) with helium gas as the primary coolant have been considered as Generation IV nuclear power reactor systems. Several iron- and nickel-based superalloys, including Incoloy 800H, Hastelloy X, and Inconel 617, are potential structural materials in pressure boundary components, such as the intermediate heat exchanger (IHX) in an HTGR. Impurities in a helium coolant, such as H2O and O2, can interact with structural materials at working temperatures of >900 °C, causing serious degradation. This study investigates the oxidation behavior of three selected alloys (Hastelloy X, Incoloy 800H, and Inconel 617) in high-temperature, gaseous environments with various levels of O2 and H2O. A series of corrosion tests were conducted at test temperatures of 650 °C, 750 °C, 850 °C and 950 °C under various coolant compositions of dry air, 1% O2, 10% humidity, and 50% humidity. © The Electrochemical Society.
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U2 - 10.1149/05031.0033ecst
DO - 10.1149/05031.0033ecst
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781607684190
VL - 50
SP - 33
EP - 49
BT - ECS Transactions
T2 - Corrosion, Passivity, and Energy: A Symposium in Honor of Digby D. Macdonald - PRiME 2012
Y2 - 7 October 2012 through 12 October 2012
ER -