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High-Temperature Oxidation Behavior of HASTELLOY C-4 in Steam

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Abstract

A commercial superalloy HASTELLOY C-4, was studied to evaluate its resistance to oxidation at elevated temperatures. Specimens were exposed to steam from 600° to 1200°C for 1–400 hr. The reaction kinetics of oxidation were determined, and the morphology of the oxide scales was investigated by optical and scanning-electron microscopy. It was observed that C-4 exhibited excellent oxidation resistance at all temperatures under study. This behavior is due to the formation of a compact and adherent oxide. The oxides formed during oxidation were identified by X-ray diffraction. The oxides observed were mainly Cr2O3, NiCr2O4, NiCrMnO4, FeCr2O4 and (Cr, Fe)2O3.

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Hussain, N., Qureshi, A.H., Shahid, K.A. et al. High-Temperature Oxidation Behavior of HASTELLOY C-4 in Steam. Oxidation of Metals 61, 355–364 (2004). https://doi.org/10.1023/B:OXID.0000032328.23022.31

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  • DOI: https://doi.org/10.1023/B:OXID.0000032328.23022.31

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