Why is stainless steel sensitive to chloride ions? ? What kind of corrosion will occur, and are there any measures?
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Why is stainless steel sensitive to chloride ions? ? What kind of corrosion will occur, and are there any measures? Such as cathodic protection? ?
It is recommended to go to the Mechanical Area – Corrosion section. There are many issues related to the corrosion of chloride ions on stainless steel. Austenitic stainless steels are sensitive to chloride ions, primarily due to the effect of these ions on breaking down the passivation film; this leads to pitting, crevice corrosion, as well as stress corrosion caused by tensile stresses. To address the issue of chloride-resistant pitting corrosion, the material’s corrosion resistance rating can be used as a reference
Where can I check the corrosion resistance rating of the material? ? ?
An oxide film forms on the outer surface of stainless steel; oxygen facilitates the formation of this film, while chloride ions inhibit it. In environments with chloride ions, 316 stainless steel can be used