pitting corrosion

https://doi.org/10.1351/goldbook.P04679
A special type of non-uniform @[email protected] of passive metals, resulting in the formation of pits, which usually occurs in the presence of certain anions at electrode potentials positive to a critical pitting potential.
Source:
PAC, 1989, 61, 19. (Electrochemical corrosion nomenclature (Recommendations 1988)) on page 22 [Terms] [Paper]