TY - GEN
T1 - Plasma nitrided austenitic stainless steel for biomedical applications
AU - Gokcekaya, O.
AU - Yilmaz, S.
AU - Ergun, C.
AU - Kaya, B.
AU - Yücel, O.
PY - 2010
Y1 - 2010
N2 - Austenitic stainless steels are widely used as a non-implantable medical device because of good corrosion resistance and moderate strength. However, they have low surface hardness and wear resistance properties. In order to improve mechanical, chemical and biological properties, surface modifications have been applied to these biomaterials. In this study, AISI 316 austenitic stainless steels were plasma nitrided under different process parameters including temperature (450, 500, 550°C) and time (2, 4 and 9 hr) at a gas mixture of 25%N2-75% H2. The nitrided surfaces were characterized by X-ray diffraction (XRD). MicroVickers hardness tests were done on the cross sections and the surface of the nitrided specimens to investigate the hardness profile. The important effects of nitriding temperature and time on the microstructure and hardness value of nitrided surface layers were introduced.
AB - Austenitic stainless steels are widely used as a non-implantable medical device because of good corrosion resistance and moderate strength. However, they have low surface hardness and wear resistance properties. In order to improve mechanical, chemical and biological properties, surface modifications have been applied to these biomaterials. In this study, AISI 316 austenitic stainless steels were plasma nitrided under different process parameters including temperature (450, 500, 550°C) and time (2, 4 and 9 hr) at a gas mixture of 25%N2-75% H2. The nitrided surfaces were characterized by X-ray diffraction (XRD). MicroVickers hardness tests were done on the cross sections and the surface of the nitrided specimens to investigate the hardness profile. The important effects of nitriding temperature and time on the microstructure and hardness value of nitrided surface layers were introduced.
UR - http://www.scopus.com/inward/record.url?scp=79952408975&partnerID=8YFLogxK
U2 - 10.1002/9780470943960.ch11
DO - 10.1002/9780470943960.ch11
M3 - Conference contribution
AN - SCOPUS:79952408975
SN - 9780470594681
T3 - Ceramic Engineering and Science Proceedings
SP - 135
EP - 146
BT - Advanced Ceramic Coatings and Interfaces V - A Collection of Papers Presented at the 34th International Conference on Advanced Ceramics and Composites, ICACC
PB - American Ceramic Society
ER -