【摘要】 用溶胶-凝胶法在多孔钛基体上制备羟基磷灰石涂层,用扫描电镜(SEM)对不同处理温度和不同pH值下生成的羟基磷灰石涂层样品进行测试分析。结果表明,相同烧结温度下,pH=0.5比pH=0能够更好地促进孔数量的产生、增大HA涂层与外界环境的接触面积;pH值相同的情况下,800℃时形成的孔比600℃时形成的孔要小;失重法研究HA涂层的抗腐蚀性能结果表明,pH越低,烧结温度越高,HA涂层在HCl中抗腐蚀性能越好。更多还原

【Abstract】 Hydroxyapatite (HA) bioactive coating was deposited on a porous titanium substrate using a sol-gel route. The HA coatings were characterized by SEM, which were formed at different sinter temperature and pH values. At same sintered temperature, more holes occurred in the HA coating in the case of pH=0.5 than the case of pH=0.0, which can enlarge the interaction area between the HA coating and the outside environment. While for the same pH value, the holes formed at 800℃ were smaller than those at 600 ℃. The corrosion behavior of the HA coating was also studied with a hydrochloric acid. The results showed that the lower the pH value, the higher the sintered temperature, and the better corrosion resistance of the HA coating was in the hydrochloric acid.更多还原