In daily life, it is common to observe that stainless steel corrodes more rapidly than ordinary steel once it starts to rust. Why is that?

2010-04-07View Original

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In daily life, it is common to observe that stainless steel corrodes more rapidly than ordinary steel once it starts to rust. Why is that?

Reply #22010-04-08

After corrosion occurred, electrochemical corrosion took place; Gr and Ni acted as the cathode, while Fe served as the anode, with Fe losing electrons. Therefore, the corrosion rate increases.

Reply #32010-04-08

Stainless steel is highly susceptible to corrosion caused by Cl-. If it’s not due to issues upstairs, the owner should check whether this could be the cause.

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