Classification of corrosion engineering

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Classification by corrosion mechanism: chemical corrosion； Electrochemical corrosion. Classified by the form of corrosion damage: uniform corrosion and local corrosion, these are the two main categories. Local corrosion can be further divided into: pitting corrosion, crevice corrosion, galvanic corrosion, intergranular corrosion, stress corrosion cracking, hydrogen-induced cracking, hydrogen corrosion, corrosion fatigue, wear corrosion, selective corrosion, etc. Classified by corrosion environment: high-temperature corrosion, wet corrosion, soil corrosion, precipitation corrosion, alkali corrosion, acid corrosion, vanadium corrosion, oxygen corrosion, salt corrosion, naphthenic acid corrosion, hydrogen corrosion, hydrogen sulfide corrosion, polyoxysulfuric acid corrosion, seawater corrosion, hydrogen sulfide-hydrogen chloride-aqueous corrosion, hydrogen sulfide-hydrogen corrosion, hydrogen sulfide-cyanide-aqueous corrosion… Classification of polymer materials: aging, chemical cracking, swelling, dissolution, stress cracking, and permeation failure, etc.