Abstract
Thermal spray coating improves SS 316L corrosion resistance using biomaterials like hydroxyapatite (HA), zirconium dioxide (ZrO2), and titanium dioxide (TiO2), promoting bone binding and biological fixation. The study examined the impact of bio-ceramic coatings like HA, HA+TiO2, and HA+ZrO2 on the corrosion rate of stainless steel and titanium in Hank's Balance Salt Solution and artificial saliva media. Electrochemical testing with polarization was carried out to determine the performance of biomaterials against corrosion rates. The addition of TiO2 and ZrO2 to HA in both SS316L and Ti6Al4V materials reduced the corrosion rate more than HA. This study revealed that coating with HA, HA + ZrO2, and HA + TiO2 biomaterials results in varying thicknesses and roughness under the same spraying parameters. Bioceramic coatings on implants offer an alternative coating to improve the performance of biomaterials.
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