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Published in:
2018 | OriginalPaper | Chapter
12. Crevice Corrosion
Author : Pietro Pedeferri (Deceased)
Published in: Corrosion Science and Engineering
Publisher: Springer International Publishing
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Abstract
Crevice corrosion is a form of localized corrosion related to the presence of sub-millimetric interstices (gaps, screens, deposits) on the surface of a metal. The mechanism involves the consumption of oxygen in the gap and the impossibility to restore it, with consequent setup of a differential aeration macrocell. This chapter presents the main aspects of metal and environment composition affecting the onset of crevice corrosion and—like in the previous chapter—proposes empirical parameters, as Critical Crevice Gap Size (CCGS), which help predict it.