• Mohana, Marimuthu
• Nagarajan, Srinivasan
• Kim, Sanghyo
• Nishimura, Toshiyasu
• Raman, Vedarajan
• Kang, Yong Soo
• Pitchaimuthu, Sudhagar
• Rajendran, Nallaiyan

Abstract

<p>The 316 L stainless steel is one of the most commonly available commercial implant materials with a few limitations in its ease of biocompatibility and long-standing performance. Hence, porous TiO₂/ZrO₂ nanocomposite coated over 316 L stainless steels was studied for their enhanced performance in terms of its biocompatibility and corrosion resistance, following a sol-gel process via dip-coating technique. The surface composition and porosity texture was studied to be uniform on the substrate. Biocompatibility studies on the TiO₂/ZrO₂ nanocomposite coatings were investigated by placing the coated substrate in a simulated body fluid (SBF). The immersion procedure resulted in the complete coverage of the TiO₂/ZrO₂ nanocomposite (coated on the surface of 316 L stainless steel) with the growth of a one-dimensional (1D) rod-like carbonate-containing apatite. The TiO₂/ZrO₂ nanocomposite coated specimens showed a higher corrosion resistance in the SBF solution with an enhanced biocompatibility, surpassing the performance of the pure oxide coatings. The cell viability of TiO₂/ZrO₂ nanocomposite coated implant surface was examined under human dermal fibroblasts culture, and it was observed that the composite coating enhances the proliferation through effective cellular attachment compared to pristine 316 L SS surface.</p>

Topics

• porous
• nanocomposite
• impedance spectroscopy
• surface
• stainless steel
• corrosion
• texture
• porosity
• one-dimensional
• biocompatibility