Abstract
B2 FeAl intermetallic compounds modified with reactive elements (REs) including Sc and Y were fabricated by vacuum arc-melting, and the isothermal oxidation behavior of the RE-doped alloys at 1373 K was investigated. Both Sc and Y single-doping significantly decrease the alumina film growth rate of the alloys. The alumina film growth rate of Sc + Y co-doped alloy even further reduces compared to that of the Sc and Y single-doped alloys. The synergistic effect produced by Sc + Y co-doping on the growth behavior of alumina was discussed. It could be anticipated that the combined additions of Sc and Y which have matched chemical properties might decrease the alumina film growth rate more effectively and provide FeAl alloys with enhanced oxidation resistance.
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This research was financially supported by the Basic Research Program of State Grid (No. GCB17201500188).
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Li, DQ., Zhou, LX., Zhu, KJ. et al. Isothermal oxidation behavior of scandium and yttrium co-doped B2-type iron–aluminum intermetallics at elevated temperature. Rare Met. 37, 690–698 (2018). https://doi.org/10.1007/s12598-018-1091-1
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DOI: https://doi.org/10.1007/s12598-018-1091-1