Abstract
The influence of Ni addition on the corrosion behaviour of hot pressed sintered stainless steel of type 316 in H2SO4 solution was investigated. It was found that Ni additions enhance the passivation processes of the hot-pressed stainless steel. The corrosion resistance was substantially improved by the Ni addition after 48 h of sintering, and the weight loss was negligible as compared to corrosion up to total loss identified in the hot-pressed and sintered 316 stainless steel. It is suggested that threshold microstructure conditions are necessary for the passivation processes of sintered stainless steel, depending on the alloying element.
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