羟基磷灰石功能梯度材料的激光涂层及材料性能研究

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Aiming at making HA powder coated on Titanium,three layers of different HA and pure Ti mixture were coated on Titanium alloy to make a functionally graded composite material by the method of laser cladding.The material properties of the coated composite were investigated and the effect of processing conditions on microstructure and stabilization of the coatings were generalized.The results show that the laser coating of functionally gradiant HAp on Ti substrate is good adhesion and biocompatibility.针对将羟基磷灰石涂覆在钛合金基底表面的问题,将三层具有不同配比的羟基磷灰石和纯钛混合物预敷在钛合金表面,利用激光覆熔法依次对预敷层进行扫描,形成了具有梯度结构的羟基磷灰石复合材料。通过实验分析了复合材料的微观材料结构、机械性能及生物兼容性,并分析了激光工艺参数对复合涂层材料性能的影响。研究结果表明,羟基磷灰石功能梯度材料的激光涂层具有良好的粘附性,且具有生物相容性。