Search Results for Pitting

This chapter concentrates on the better-known and widely studied phenomenon of pitting corrosion of passive metals. The discussion focuses on different parameters that influence pitting corrosion, namely environment, metal composition, potential, temperature, surface condition, and inhibitors. It also provides information on various stages of pitting: passive film breakdown, metastable pitting, pit growth, and pit stifling or death.

Pitting is the most common corrosion attack on aluminum alloy products. This chapter explains why pitting occurs and how it appears in different types of aluminum. It discusses pitting rates, pitting potentials, and pitting resistance as well as testing and prevention methods. It also discusses the problem of crevice corrosion and how it is influenced by crevice geometry and operating environment. The discussion covers the most common forms of crevice corrosion, including water staining, poultice corrosion, and filiform corrosion, along with related testing and prevention methods.