Open AccessCorrosion Study for Waste Tanks to High and Salt Concentration Conditions
Author(s) -
J.I. Mickalonis
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/64811
Subject(s) - stress corrosion cracking , corrosion , dissolution , carbon steel , oxide , metallurgy , nitrate , salt (chemistry) , materials science , environmental science , cracking , waste management , environmental chemistry , chemistry , composite material , engineering , organic chemistry
During salt dissolution, waste compositions may reach temperature and nitrate concentrations not covered by the present technical standards. Stress corrosion cracking (SCC) is a possible degradation mechanism of waste tank steels. Accelerated electrochemical tests were performed to identify potential ranges where SCC could occur for ASTM A537 and A285 plain carbon steels. The results showed that the only probable potential range for SCC would be that for the normal oxide state (-0.200 to -0.400 V). Possible oxide instability was also identified for the range of 0.000 to 0.200 V. These ranges will be used for the planned slow strain rate test to determine SCC susceptibility