期刊
CORROSION SCIENCE
卷 177, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.108955
关键词
Mass transport; Molten salts; Nickel; Stainless steel; Galvanic corrosion
资金
- IRP grant from the United States Department of Energy, Office of Nuclear Energy [DENE0008651]
- NEUP grants from the United States Department of Energy [DE-NE0008802, DE-NE0008803]
- NSF through the University of Wisconsin Materials Research Science and Engineering Center [DMR-1720415]
Mass transport of corrosion products between Ni-201 test samples and 316 L capsules in a 500-hour FLiNaK corrosion experiment has been investigated. In one experiment, the capsule and samples were electrically connected for galvanic coupling, while in the other they were electrically isolated using boron-nitride. Post-corrosion characterization of Ni-201 from the two experiments did not reveal any remarkable differences. Substantial transport of Fe and Cr from the 316 L to the Ni-201 via the salt was observed, with notable diffusion of these elements in the near-surface regions of the Ni-201 samples, while a Cr-rich film was also observed on their surfaces.
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