| Title |
Crevice-Corrosion Evaluation of 304 Stainless Steel Pipe Joint for Potable Water System with Chloride Ion Concentration |
| Authors |
박선아(Sun Ah Park); 김진호(Jin Ho Kim); 김정구(Jung Gu Kim); 김영호(Yeong Ho Kim) |
| DOI |
https://doi.org/10.3365/KJMM.2015.53.11.761 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
metals; joining; corrosion; image analysis; potable water |
| Abstract |
The crevice-corrosion behavior of 304 stainless steel at several chloride concentrations was investigated with two types of specimens: plate and pipe joint. There is a good correlation of crevicecorrosion behavior between the plate specimen and pipe joint specimen. The crevice-corrosion of both specimens initiated when the chloride ion concentration exceeded 200 ppm. Four stages of crevice-corrosion were observed: isolated pits, coalescing pits, crystallographic attack, and polishing attack. Consequently, the critical chloride ion concentration of crevice-corrosion is affected by the intrinsic property of the material. |