The Effect of Surface Treatment on Corrosion behavior of Surgical ۳۱۶L Stainless Steel Implant

The AISI ۳۱۶ L Stainless Steel (SS) specimens were exposed to passivation surface through two different processes including; holding in ۴۰-vol% HNO۳ at temperature of ۶۰ ºC for ۳۰ min and ۱۵-vol%H۲SO۴ at ambient temperature for ۱ hour. The corrosion behavior of specimens was evaluated in physiological solutions by electrochemical in vitro tests through linear and Tafel polarization tests. Cyclic polarization tests were performed for investigating of the specimen’s resistance against pitting. Finally, the corrosion resistance of untreated and modified specimens was compared. The results show that the corrosion resistance of ۳۱۶L SS metallic implant is increased due to passivation surface treatment.

کلیدواژه ها:

Surgical Implant ، ۳۱۶L stainless steel ، Corrosion Behavior ، Surface treatment ، biocompatibility