利用X射线衍射仪(XRO)、电子探针(EPMA)、扫描电镜(SEM)等检测手段,研究了等离子喷涂羟基磷灰石(HA)涂层热处理前后的显微组织变化,以及经热处理和模拟体液(SBF)浸泡处理对涂层力学性能的影响.结果表明:涂层内部衬度不一,存在化学非均匀性.涂层中的裂纹、气孔、未熔颗粒界面是断裂的起源.热处理能使涂层中的不均匀性消失,成分趋于一致,结晶度提高.热处理后,粗颗粒涂层结合强度升高而细颗粒涂层则降低.0.5 SBF浸泡处理后,所有涂层的结合强度都降低,原始细颗粒涂层降低幅度最大,原始粗颗粒涂层次之,热处理细涂层降低幅度最小.
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