Corrosion testing
Disintegration of the material composite
Intergranular corrosion (IC) is a special form of corrosion that can manifest itself in most high-alloy alloys under certain conditions. Occasionally it is also referred to as “grain decay”.
During this process, carbides or carbide networks form at the grain boundaries. Particularly in the presence of aggressive acids and alkalis, these lead to the dissolution of the grain boundary precipitates, which in turn leads to the dissolution or disintegration of the material composite.
Corrosion testing
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DIN 50914 / SEP 1877 Procedure I
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EN ISO 3651-2
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SEP 1877 Procedure II + III
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ASTM A-262, ASTM G28 A, ASTM G28 B, ASTM G48 A, ASTM G48 B
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Determination of the area-related mass loss
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Metallographic determination of selective grain decomposition
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