High-temperature oxidation behavior of Fe-Cr-Al electrothermal alloy

doi:10.13251/j.issn.0254-6051.2021.04.010

Abstract

Abstract: Oxidation mass gain test was conducted for Fe-Cr-Al electrothermal alloy 0Cr25Al5 at 950, 1050 and 1150 ℃, respectively. The results show that the alloy belongs to the complete oxidation resistance class at 950 ℃ and oxidation resistance class at 1050 ℃. When oxidized at 1150 ℃ for more than 40 h, the oxidation resistance of the alloy is greatly reduced because of the voids appear in the oxide film of the alloy due to the evaporation of Cr₂O₃. The XRD analysis result shows that the oxide film on the alloy surface is mainly composed of TiO₂, Al₂O₃ and FeCr₂O₄.

Key words: Fe-Cr-Al electrothermal alloy, high temperature oxidation, oxidation kinetics, oxide composition

CLC Number:

TG142.71

Liu Wei, Shao Xinming, Ji Yonghua, Xu Wanjian, Chen Jie, Wang Shuping. High-temperature oxidation behavior of Fe-Cr-Al electrothermal alloy[J]. Heat Treatment of Metals, 2021, 46(4): 60-64.

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