Electrochemical Studies on the Corrosion of Carbon Steel in Oxalic Acid Cleaning Solutions.

Wiersma, B. J. ; Mickalonis, J. I.

Technical Information Center Oak Ridge Tennessee

关键词: Carbon steels;    Corrosion resistance;    Electrochemical tests;    Oxalic acid;    Radioactive wastes;   

RP-ID  :  DE2007918135

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The Savannah River Site (SRS) will disperse or dissolve precipitated metal oxides as part of radioactive waste tank closure operations. Previously SRS has utilized oxalic acid to accomplish this task. Since the waste tanks are constructed of carbon steel, a significant amount of corrosion may occur. Although the total amount of corrosion may be insignificant for a short contact time, a significant amount of hydrogen may be generated due to the corrosion reaction. Linear polarization resistance and anodic/cathodic polarization tests were performed to investigate the corrosion behavior during the process. The effect of process variables such as temperature, agitation, aeration, sample orientation, light as well as surface finish on the corrosion behavior were evaluated. The results of the tests provided insight into the corrosion mechanism for the iron-oxalic acid system.