Corrosion Forms
The term "forms" of corrosion is generally well known from one of the most enduring books on corrosion engineering [1]. The different forms of corrosion represent corrosion phenomena categorized according to their appearance. Dillon [2] considered Fontana's basic forms of corrosion and divided them into three groups, based on their ease of identification. The three categories used were:
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Group 1 - readily identifiable by ordinary visual examination
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Group 2 - may require supplementary means of examination
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Group 3 - verification is usually required by microscopy (optical, electron microscopy etc.)
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However, the corrosion of metals and alloys almost never follows
a single law nor is governed by a single mode. Even the simplest situations
can lead to the corrosion of a material by a combination of modes driven by
intertwined mechanisms.
References Fontana MG: Corrosion Engineering. New
York, NY, McGraw Hill, 1986
Dillon CP: Forms of Corrosion: Recognition and Prevention.
Houston, TX, NACE International, 1982.
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