evaluation of the properties of 45s5 bioglass coating on 316l stainless steel substrate

in order to increase the life span of implants, coatings such as bioglass are applied on implants' surfaces to prevent their corrosion in biological fluids. in this research, 45s5 bioglass coatings were applied on 316l stainless steel substrate by sol- gel method and coating's properties were examined by different analyses. according to the xrd results, an amorphous compound containing na2ca2si3o9 crystalline phase is obtained by sintering the coated substrates at 600 ˚c for 5 h,. the results of sem examination showed that cracks appear on the coat by increasing the number of dipping stages. furthermore, the results of potentiodynamic polarization tests in sbf solution at 37 ˚c showed that 316l stainless steel substrate coated by 45s5 bioglass has a higher corrosion resistance.