Pitting and Crevice Corrosion Testing

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Published date: 2024/05/09
  • Location: Shirley, Shirley, New York, United States
Pitting corrosion is the phenomenon that in some environmental media, the surface of metal materials does not corrode or corrodes very slightly, but corrosion holes appear in the small areas of the surface and as time goes by, they develop in the depth direction and forming small hole-like corrosion pits. Pitting corrosion can accelerate other types of local corrosion, like intercrystalline corrosion, stress corrosion cracking, corrosion fatigue, etc.

Crevice corrosion is a kind of local corrosion which often occurs in the narrow gap between metal and metal or non-metal in the presence of electrolyte solution, such as holes, gasket contact surface, lap joint, sediment, fastener crevice, etc. The crevice corrosion will decrease the strength of the parts, and weaken the matching degree. The increase of the corrosion volume in the crevice will cause local additional stress, which not only makes assembly difficult, but also reduces the bearing capacity of components.

STEMart carries out professional pitting and crevice corrosion testing to provide necessary data to help you select the right materials combinations for your required application.

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