用微束等离子喷涂在TiAl6V4基体上制备羟基磷灰石涂层,研究了喷涂电流、喷涂距离和气流量等参数对其显微结构和结晶度的影响.结果表明,通过调整喷涂工艺参数可获得三类不同结构的涂层.第一类结构含有大量未融化HA颗粒,第二类结构呈典型层状且具有强织构,第三类结构层状结构不明显.前两种结构的结晶度较高,第三类结构的结晶度较低.由二和三类结构复合而成的梯度涂层,能够适应植入体涂层快速形成类骨磷灰石和保持稳定性的双重要求.
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