| Title |
Growth of Nitride Layer for AISI 304 Stainless Steels Used in Ion Nitriding |
| Authors |
신동훈(Dong Hoon Shin) ; 최운(Woon Choi) ; 인현만(Hyun Man Inn) ; 김형준(Hyoung June Kim) ; 남승의(Seoung Eui Nam) |
| Abstract |
In the study, effects of alloying elements of AISI 304 austenite stainless steels on the behavior of ion nitrding were investigated using plasma ion nitriding system. The characteristics of ion nitriding, their microstructures, and physical properties were investigated as a function of process parameters. In the case of AISI 304 stainless steels, constant concentration profiles on N and alloying elements such as Cr and Ni are observed through nitride layers. Nitride layer consists of the upper white layer having various nitride phases((Cr,Fe)₂N_(1-x_, Fe₄N, CrN, Fe_(2-3)N) and the underneath diffusion layers(CrN+Fe(2-3)N). Diffusion coefficients are 16.8kJ/mole value at 10 mTorr and 171.1kJ/mole value at 0.4mTorr. |