摘要
采用微弧氧化和电化学沉积(ED)技术在工业纯钛(CPTi)表面沉积氟掺杂羟基磷灰石(FHAP)/微弧氧化(MAO)复合涂层。并在Hsnk’s溶液中对未涂覆的CPTi基材和涂覆的样品进行电化学耐腐蚀性测试。研究了MAO界面层对涂层微观结构,力学性能和电化学性能的影响。结果表明,HAP/Ti,FHAP/Ti和FHAP/MAO/Ti复合涂层样品在模拟Hank’s溶液中提高了CPTi基体的耐腐蚀性能。然而,力学性能测试表明,与具有MAO界面层的FHAP/Ti涂层的结合强度(18.1 MPa)相比,FHAP/Ti涂层的结合强度较差(10.7 MPa)。此外,FHAP/MAO/Ti涂层的接触角约为35.8°,这更有利于促进细胞附着和增殖。
A fluorine-doped hydroxyapatite(FHAP)/micro-arc oxidation(MAO) composite coating was deposited on commercially pure titanium(CPTi) surface through micro-arc oxidation and electrochemical deposition(ED) technique. Simulative Hank's solution was used to test the electrochemical corrosion resistance of uncoated CPTi substrate and coated samples. The effect of MAO interface layer on the micro-structure, mechanical property, and electrochemical property of the coating was studied. Results show that the deposited HAP/Ti, FHAP/Ti and FHAP/MAO/Ti coating samples dramatically improve the anticorrosion of the CPTi substrate in the simulative Hank's solution. However, the mechanical properties testing shows that FHAP/Ti coating has a poor bonding strength of 10.7 MPa compared to FHAP/Ti coating with a MAO interface layer(18.1 MPa). Furthermore, the contact angle of the FHAP/MAO/Ti coating with deionized water is approximately 35.8°, which is more beneficial to promoting cell attachment and proliferation.
引文
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