Pitting corrosion

General characteristics

Passivation of stainless steel due to the formation of the film of the oxide Cr2 O3. In the absence of oxygen (or the substitution of other ions), piscivorous film on the surface of stainless steel is formed. In the worst case of small local punctuation will disrupt the oxide layer in a number of critical points. Corrosion at these points forms the corrosion of gaps of several types, dependent on conditions. Corrosion gap may continue to grow even when there is no aggressive factor, since the inside of the cavities there is no oxygen. The sharp ends of long and narrow gaps can form stress concentration and cause fracture of elastic alloys in thin films appear pin holes, the depth of which depressions in the thickness of a finger.

Pitting corrosion

It can lead to a gradual and imperceptible destruction of the entire construction. Such corrosion shall be suspended if the material to provide oxygen, eliminate gaps and a touch of salt. Pitting corrosion is typical for exposure of a solution of concentrated salts, e.g., sea water at an elevated temperature.

To buy, price

In stock, LLC «" in the presence of a wide range of corrosion-resistant steels and alloys at the best price. Products are certified, meets domestic and international quality standards. Under the order, apply a protective coating. We offer advantageous conditions for the order. On our website you will find all the necessary information. Our online consultant is always ready to answer your questions. The timing of orders is minimal. Wholesale buyers get a preferential discount.

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Stanislas

Stanislas

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