Can chemical corrosion occur between stainless steels?
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I would like to ask whether electrochemical corrosion can occur between 316L and duplex steel in ethyl formate as the medium. Temperature 90°C. If so, is it serious? Is the amount of corrosion significant? Thank you
Electrochemical corrosion – learn about it!
Yes, it can occur as long as there is a difference in electrode potential between the two materials and an electrolyte is present. The corrosion rate depends on factors such as the concentration of the medium, temperature, and the way the materials are in contact; it’s best to conduct tests using test pieces first.
Electrochemical corrosion certainly exists between metals at different potentials in a corrosive medium. Ethyl formate should exhibit weak acidity at high temperatures, and stainless steel is an acid-resistant material; therefore, the corrosion rate is generally low!
Let’s do an experiment; after all, no one can be sure based on theory alone
Yes, as long as it’s two different materials. . . . . . . . . . . .
Corrosion will definitely occur; the key is to know what the corrosion rate is under your specific operating conditions. If the difference in the self-corrosion potentials of the two materials is not large, the corrosion rate is likely to be low as well.