Abstract
Effect of Te on the corrosion behavior of GH3535 alloy in molten LiF-NaF-KF (FLiNaK) salt at 700 ℃ was investigated. GH3535 alloy only suffered from uniform corrosion in the purified salt without Te. Results indicate that the Te in salt preferentially corrodes GH3535 grain boundaries. The alloy grains can also be corroded in the salt with Te at higher concentration. The corrosion induced by Te is mainly attributed to the reactions among Te, main composition of alloy and impurities in salt. The precipitated carbides in GH3535 alloy and the increasing concentration of Te in salt both aggregate the intergranular cracking.
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