Effect of Deposition Temperature on the Structure, Mechanical, Electrochemical Evaluation, Degradation Rate and Peptides Adhesion of Mg and Si-Doped Hydroxyapatite Deposited on AZ31B Alloy

Degradable and non-degradable biomaterials are two categories that can be used to classify the existing biomaterials, being a solution for eliminating second surgical intervention of implant when tissue has properly recovered. In present paper, effect deposition temperature on structure, morphology, hardness, electrochemical evaluation, degradation properties functional peptides adhesion Mg Si-doped hydroxyapatite was investigated. The coatings were obtained by RF magnetron sputtering technique at room (RT) 200 °C AZ31B alloy substrate. Results showed an increase in led improvement hardness reduced modulus about 47%. From point view, comparative assessment corrosion resistance made as function immersion medium used, highlighting superior behaviour revealed coating deposited elevated immersed DMEM (icorr~12 µA/cm2, Rcoat = 705 Ω cm2, Rct 7624 cm2). By increasing up °C, rate slowed, more visible case DMEM, which had less aggressive after 14 days immersion. Both temperatures equally suitable further bio-inspired with mussel-derived peptide, facilitate biointegration.