Abstract
In this paper, we have reported a successful synthesis of ionic substituted (Si, Sr and Zn) hydroxyapatite (HAp) using chemical precipitation method and the coating of the synthesized materials on surgical grade 316 L SS using electrophoretic deposition technique. The structural, compositional, functional group and morphological characterization of the developed coatings were carried out using XRD, EDX, FT-IR, and FE-SEM. Electrochemical studies such as potentiodynamic polarization, electrochemical impedance studies were performed to evaluate the corrosion resistance imparted by the coatings and was found that considerable resistance was exhibited by the coated samples. Furthermore the coated samples were tested for in-vitro biomineralization ability in simulate body fluid (SBF) solution at different immersion time periods and was found that the thickness of the apatite film was increased with the increase in the immersion time and the surface became entirely covered with apatite. Thus it is opined that the developed Si, Sr, and Zn substituted Hydroxyapatite (I-HAp) coating on 316 L SS substrate would be ideal candidates for bio implant applications.
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