Journal
INTERMETALLICS
Volume 148, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2022.107649
Keywords
High-entropy alloy; Amorphous coating; Si addition; LBE corrosion; Corrosion behaviour
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Funding
- National Natural Science Foundation of China [U2067218]
- Science and Technology on Reactor System Design Technology Laboratory of Nuclear Power Insti- tute of China
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The effect of Si addition on the microstructure, mechanical properties, and LBE corrosion behavior of high entropy alloy coatings was investigated. Results showed that Si addition improved the mechanical properties and corrosion resistance of the coatings, forming a more continuous and protective oxide layer.
The effect of the Si addition content ranging from 3.3 to 9.1 at.% on the microstructure, mechanical properties and LBE corrosion behaviour of AlCrFeMoTiSix HEA coatings was investigated. The coatings still maintained an amorphous structure, and their mechanical properties were improved. The Si addition greatly contributed to the enhancement of the LBE corrosion resistance of the coatings, which could be attributed to the formation of a more continuous and protective Cr2O3 and Al2O3 layer. However, the improved efficiency was related to the Si addition content, with an oxidation process model put forwards to well explain this phenomenon.
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