Corrosion of high purity Fe-Cr-Ni alloys in 13 N boiling nitric acid
Conference
·
OSTI ID:350115
- Electric Power Industry, Komae, Tokyo (Japan). Central Research Inst.
Corrosion in boiling nitric acid was investigated for high purity Fe-18%Cr-12%Ni alloys and type 304L stainless steels (SS). Owing to very low impurity concentration, the solution treated high purity alloys show almost no intergranular corrosion while the type 304L SS show severe intergranular corrosion. Both in the high purity alloys and type 304L SS, aging treatments ranging from 873 K to 1073 K for 1 h enhance intergranular corrosion. During the aging treatments, impurities should be segregated to the grain boundaries. The corrosion behaviors were discussed from a standpoint of impurity segregation to grain boundaries. This study is of importance for purex reprocessing of spent fuels.
- OSTI ID:
- 350115
- Report Number(s):
- CONF-980316--
- Country of Publication:
- United States
- Language:
- English
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