Metallurgical Failure Analysis, Mark Douglas Bell, PE, Consulting Metallurgical Engineer, San Diego, California, USA Bell Metallurgy
Metallurgical Failure Analysis
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Mark Douglas Bell, PE
Consulting Metallurgical Engineer

Crevice Corrosion

Crevice corrosion is a close cousin to pitting corrosion. In the same manner that a lack of a protective oxide film will pit; a crevice between faying surfaces will set up a similar oxygen deprived surface. There does not have to be dissimilar metals for crevice corrosion. The area underneath a bolt or washer, under a gasket or between pieces of metal in conjunction will allow for crevice corrosion.

Normal varieties of stainless steel are very susceptible to crevice corrosion. Factors to control crevice corrosion are use of high alloys, designing to avoid crevices, and control of temperatures and environments..

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