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Xiangyang Peng, Yuhai Tang, Xiangbin Ding, Zhichao Lu, Shuo Hou, Jianming Zhou, Shuyin Han, Zhaoping Lu, Guangyao Lu, and Yuan Wu, Fe-based amorphous coating prepared by HVOF and its corrosion behavior in static lead-bismuth eutectic alloy, Int. J. Miner. Metall. Mater.,(2022). https://doi.org/10.1007/s12613-022-2420-9
Cite this article as:
Xiangyang Peng, Yuhai Tang, Xiangbin Ding, Zhichao Lu, Shuo Hou, Jianming Zhou, Shuyin Han, Zhaoping Lu, Guangyao Lu, and Yuan Wu, Fe-based amorphous coating prepared by HVOF and its corrosion behavior in static lead-bismuth eutectic alloy, Int. J. Miner. Metall. Mater.,(2022). https://doi.org/10.1007/s12613-022-2420-9
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  • Research Article

    Fe-based amorphous coating prepared by HVOF and its corrosion behavior in static lead-bismuth eutectic alloy

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    • To enhance the corrosion resistance of the T91 stainless steel in liquid Lead-Bismuth eutectic (LBE), the Fe49.7Cr18Mn1.9Mo7.4W1.6B15.2C3.8Si2 amorphous coating was deposited on T91 steel substrate by the high-velocity oxygen fuel (HVOF) spray technique. And the corrosion behavior of both the T91 steel and coating exposed to oxygen-saturated LBE at 400℃ for 500 h was investigated. It was found that the T91 substrate was severely corroded and covered by homogeneously distributed dual-layer oxide scale forms on the interface contacted to LBE, consisting of outer magnetite layer and inner Fe-Cr spinel layer. While the amorphous coating with a high glass transition temperature (Tg = 550℃) and crystallization temperature (Tx = 600℃) exhibits dramatically enhanced thermal stability and corrosion resistance. No visible LBE penetration was observed although a small amount of Fe3O4, Cr2O3, and PbO were found on the coating surface. Additionally, the amorphicity and interface bonding of the coating layer remained basically unchanged after the LBE corrosion. The results confirm that the Fe-based amorphous coating can act as a stable barrier layer in liquid LBE and have great application potential for long-term service in LBE-cooled fast reactors.

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