4. Derived corrosion mechanisms

Uniform corrosion and the three basic types of localized corrosion just described have been defined "in the absolute", i.e. simply by reference between "a metal" and a "corrosive medium". Clearly, these are only general principles, and will now have to be applied to each individual metal and corrosive medium. A whole panoply of interactions between corrosion and :

• metallurgy (intergranular corrosion, selective corrosion, embrittlement of metal by hydrogen produced by cathodic reaction);

• metal mechanics (fatigue-corrosion) ;

• fluid mechanics (erosion-corrosion, abrasion-corrosion) ;

• contact mechanics (tribocorrosion, fretting corrosion) ;

• unexpected environmental chemistry, particularly when dependent on bacterial...