발간논문

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Vol.31, No.8, 1052 ~ 1060, 1993
Title
The Pitting Behavior of Ion - Nitrided Austenitic Stainless Steels
최한철Han Cheol Choe, 김관휴Kwan Hyu Kim
Abstract
The pitting behavior of ion-nitrided austenitic stainless steels was investigated by electrochemical methods. Ion-nitriding was carried out at 380 and 550℃ for 10hrs. Passive film breakdown potential(E_b), corrosion potential(E_(corr)) and repassivation potential(E_r) of ion-nitrided AISI 316L stainless steel(SS) were higher than those of ion-nitrided AISI 304LSS, whereas critical anodic current density (I_c) and current density at passive region(I_p) were lower. The pitting resistance of ion-nitrided AISI 316LSS appeared to be better than that of AISI 304LSS and the corrosion morphology showed severe pitting in the case of ion-nitrided AISI 304LSS at 550℃ for 10hrs.
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