Abstract
The corrosion behavior of the safety valve spring in the liquid chlorine tank is investigated in this study. The chemical composition, metallographic structure and hardness of the spring are also analyzed. The higher hardness of spring steel is caused by lower tempering temperatures. The corrosion product is grey with many cracks, spalling and pitting is also found. The phenomenon that where there is higher chloride, there is higher carbon is observed. Chloride ion is adsorbed by carbides and then pitting preferentially nucleate at carbides.
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