Derived corrosion mechanisms
Aqueous corrosion of metals and alloys

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 processes (bacterial corrosion).

In all of this, the four fundamental corrosion...