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Corrosion of Type 316L stainless steel in Pb-17Li

Authors
Journal
Journal of Nuclear Materials
0022-3115
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0022-3115(91)90159-5

Abstract

Abstract Corrosion tests carried out in Pb-17Li in both capsules and a convection loop (hot leg temperature 768 K, cold leg temperature 748 K, flow rate 10 mm/s) have shown that Type 316 stainless steel undergoes almost complete loss of Ni and Mn, and extensive loss of Cr to form a porous ferritic zone. Ferritic zone depths measured on the loop samples exposed between 1000 and 4000 h were in good agreement with previous data. Some evidence was found for the interaction of chromium with oxygen dissolved in Pb-17Li. Examination of the cold leg samples revealed deposition products of iron and chromium but no deposits containing nickels were observed. These observations were rationalised in terms of recent measurements of the solubilities of metals in Pb-17Li.

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