The corrosion behavior of 304 stainless steel and its corrosion prevention by Al/silicone coating in the presence of a pre-deposit solid NaCl and water vapor at 400℃ were studied. Results indicated that the bare 304SS suffered from severe corrosion under this environment. The steel coated with silicone coating was not corroded in the same environment, and the coating shows excellent protectiveness to the steel. A mechanism of the corrosion protection of the Al/silicon coating on the 304SS is proposed
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