Characteristics of silver-containing titanium- based coating after thermal oxidation


Çetiner D. , Gül Karagüler N. , Çimenoğlu H. , ATAR E.

SURFACE INNOVATIONS, vol.10, no.2, pp.140-149, 2022 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 2
  • Publication Date: 2022
  • Doi Number: 10.1680/jsuin.21.00021
  • Title of Journal : SURFACE INNOVATIONS
  • Page Numbers: pp.140-149
  • Keywords: anti-bacterial, coatings, surface characterisation, ANTIBACTERIAL PROPERTIES, ION RELEASE, OXIDE, FILMS

Abstract

This study has been initiated to form a silver (Ag)-incorporated titanium oxide (TiO2) outermost layer over a medical grade 316L stainless steel by subsequent applications of cold spray (CS) and thermal oxidation (TO) processes. X-ray diffraction analysis, scanning electron microscopy examination and Raman analysis revealed that TO at 600 degrees C for 60 h in the air formed a 3 mm thick exterior layer composed of the rutile form of titanium oxide and metallic silver over the CS coating fabricated by depositing a mixture of 87 wt.% titanium (Ti), 8 wt.% aluminium (Al) and 5 wt.% silver powder. This exterior layer exhibited superior bioactivity and wear resistance along with a sufficient antibacterial activity, which can further be improved by adjusting the distribution and/or content of silver in its structure.