采用大气等离子喷涂技术,在纯钛表面喷涂制备钙磷(Ca-P)涂层,分析两种喷涂工艺下形成的两种特殊形貌晶体的显微结构和元素组成,利用XRD定量分析涂层的相组成及结晶度,并在人体模拟液(SBF)中对涂层的降解性能进行研究.结果表明:在喷涂功率为22 kW、喷枪移动速率为400 mm/s时涂层表面形成大量方棱状的焦磷酸钙(Ca2P2O7)晶体,结晶度为4.61%,而在喷涂功率为26 kW、喷涂距离为300 mm/s时则形成大量花瓣状的磷酸四钙(Ca4P2O9)晶体,结晶度为6.02%,喷涂粉体粒度较小使得两种涂层中HA结晶度都较小;生物降解性能研究显示,两涂层降解反应都是由剧烈到平缓的过程,但含Ca2P2O7晶体涂层的降解速率小于含Ca4P2O9晶体的涂层.
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