| Title |
The Pitting Behavior of Ion - Nitrided Austenitic Stainless Steels |
| Authors |
최한철(Han Cheol Choe); 김관휴(Kwan 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. |