温水中のステンレス鋼隙間内液の濃縮挙動と腐食性

抄録

Concentrating behavior of metal ion, hydrogen ion and chloride ion in the anolyte on electrolyzing the stainless steel in the cell separated with a glass filter was studied quantitatively. Some corrosion tests in the prepared anolytes were also conducted on four stainless steels.
Two stages in concentrating process with slow and then fast rate were observed for chloride ion while only one stage was observed for metal ion or hydrogen ion. Incubation time of crevice corrosion calculated by measured current density of the differential aeration cell and critical quantity of electricity until active dissolution of the stainless steel occured is obtained with a few correction. The alloying elements and oxide scale of welds change the incubation time of crevice corrosion of the stainless steel.