Uniform Attack Corrosion
What is uniform corrosion.
Uniform attack corrosion. Corrosion types and prevention. Corrosion phenomena of the stainless steel are composed of uniform corrosion and localized corrosion igc. Also known as uniform attack corrosion general attack corrosion is the most common type of corrosion and is caused by a chemical or electrochemical reaction that results in the deterioration of the entire exposed surface of a metal. Eight forms of corrosion by.
Prevent uniform attack corrosion by protecting the metal surface. In a previous post we discussed the basics of corrosion from the fundamental chemical reaction to the types of environments in which corrosion can occur. Fontana greene 1967 the idea of describing the various ways corrosion can damage metals by it appearance had be used by many before fontana and greene coauthored their famous book in 1967mckay and worthington were already discussing various forms of corrosion in their 1936 book on corrosion. Posted on june 2017.
Uniform corrosion is characterized by corrosive attack proceeding evenly over the entire surface area or a large fraction of the total area. Localized corrosion refers to the hastened attack of passive metals in corrosive environments. Corrosion is a degradation phenomenon of a material when under environmental chemical attack. All different types of corrosion.
Pitting galvanic corrosion crevice corrosion filiform corrosion stress corrosion cracking scc mic corrosion graphitic. Following alan pollitt in his own book published thirteen years sooner. The driving power for pitting corrosion is the depassivation of a small area which becomes anodic while an unknown but potentially vast area becomes cathodic leading to very localized galvanic corrosion. It is characterized by an intense attack at confined areas on surface components while the remaining area of the surface corrodes at a much slower rate.
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