TY - JOUR ID - 103382 TI - Corrosion Behavior of TiN/CrN Nanoscale Multi-layered Coating in Ringer's Solution JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Faghani, G. AU - Rabiee, S. M. AU - Nourouzi, S. AU - Elmkhah, H. AD - Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran AD - Department of Materials Engineering, Babol Noshirvani University of Technology, Babol, Iran AD - Department of Materials Engineering, Bu-Ali Sina University, Hamedan, Iran Y1 - 2020 PY - 2020 VL - 33 IS - 2 SP - 329 EP - 336 KW - 420C stainless steel KW - corrosion KW - Multi-layer KW - Ringer's Solution KW - TiN/CrN DO - 10.5829/ije.2020.33.02b.18 N2 - In this article, corrosion behavior of the single-layered TiN, single-layered CrN and multi-layered TiN/CrN coatings have been fabricated on 420C stainless steel (SS) by Cathodic Arc Evaporation (CAE) method in Ringer's solution was studied. The electrochemical appraisal was done by the Potentiodynamic Polarization (PDP) and Electrochemical Impedance Spectroscopy (EIS) tests. Results of PDP test revealed that all coated specimens have an increment in the polarization resistance (Rp) values (ranges from 438.2 to 593.6Ω.cm2) compared to bare SS (268.1Ω.cm2). Corrosion rate values for bare 420C SS and CrN, TiN and multi-layered TiN/CrN coatings were measured 0.086, 0.042, 0.050 and 0.068mpy, respectively. Furthermore, EIS results were showed that the single-layer CrN coating well depicted by an equivalent circuit with three time constants and has larger impedance and maximum logarithmic variation of C2. Finally, the corrosion performance results confirmed that single-layered CrN coating is an appropriate choice for deposition on 420C SS with the aim of application in general surgical instruments. UR - https://www.ije.ir/article_103382.html L1 - https://www.ije.ir/article_103382_f979fa151cca64a327786860b744bbca.pdf ER -