Uniform Attack Corrosion
Uniform attack corrosion sometimes shortened to uniform corrosion is a type of corrosion that occurs appropriately in a uniform fashion over an exposed metal surface.
Uniform attack corrosion. Corrosion types and prevention. Uniform corrosion or general corrosion as sometimes called is defined as a type of corrosion attack deterioration that is more or less uniformly distributed over the entire exposed surface of a metal see illustration below. Prevent uniform attack corrosion by protecting the metal surface. Corrosion is a degradation phenomenon of a material when under environmental chemical attack.
Posted on june 2017. Pitting corrosion or pitting is a form of extremely localized corrosion that leads to the creation of small holes in the metal. 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. Pitting galvanic corrosion crevice corrosion filiform corrosion stress corrosion cracking scc mic corrosion graphitic.
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. 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. 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. Uniform corrosion is characterized by corrosive attack proceeding evenly over the entire surface area or a large fraction of the total area.
What is uniform corrosion. Corrosion phenomena of the stainless steel are composed of uniform corrosion and localized corrosion igc. Localized corrosion refers to the hastened attack of passive metals in corrosive environments. All different types of corrosion.
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