研究了碱处理时间对钛合金表面形貌的影响.而后采用水热电化学方法在钛合金表面沉积羟基磷灰石(HA),研究了碱处理时间对HA形貌、物相及生物活性的影响.结果表明,钛合金表面碱处理生成的多孔网状结构由钛酸钠凝胶组成,孔径尺寸随碱处理时间的增加先增大后减小;HA涂层的微观形貌随预处理时间的不同而呈现分层生长模式;HA涂层c轴方向的择优度随预处理时间的增加先减小后增大,在48 h取得最小值;经过48 h碱液预处理的试样具有更好的生物活性.
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