Corrosion resistance of TiN coated implant alloys in artificial physiological solution

Kailash R. Jagdeo¹*, Suresh N. Kadam² and Methil R. Nair³

¹Department of Physics, DSPM’s K.V. Pendharkar College, Dombivli (India). ²Department of Physics, KET’s V.G. Vaze College, Mulund, Mumbai (India). ³Model College, Dombivli (India).

Received on March 20, 2010 and accepted on April 28, 2010

ABSTRACT

The corrosion behavior of TiN coated NiTi-Shape Memory Alloy, Ti6Al4V and 316L Stainless Steel implant alloys in artificial physiological solutions were investigated by means of electrochemical test. The cathodic arc physical vapor deposition method was used for film deposition. Surface morphology and surface composition were studied using SEM/EDAX and XRD. ICPAES was used to determine ions leached from each specimen when kept immersed in artificial physiological solution for sixteen weeks. The corrosion stability, elemental out-diffusion resistance, microhardness were found to be increased by this treatment.

Keywords : Corrosion, Shape memory alloys, Implant alloys, Cathodic arc physical vapor deposition.