采用激光选区熔化技术成功制备了TiN增强钛基复合材料,并研究了TiN含量对钛基复合材料微观结构、显微硬度和摩擦磨损行为的影响。结果表明:随着TiN含量的增加,α-Ti相衍射峰发生偏移,TiN衍射峰强度逐渐增强,复合材料的显微硬度从纯钛的(228±13) HV逐渐增大到(403±20) HV;当添加TiN的质量分数为7.5%时,复合材料的磨损性能比纯钛提高了29.2%。TiN颗粒的加入使钛基复合材料的硬度与磨损性能显著提升。

In this study, TiN/CP-Ti composites are successfully prepared using selective laser melting (SLM), and the effect of TiN content on the microstructure, microhardness, and wear behavior of Ti-based composites is studied. Results show that diffraction peaks of the α-Ti phase shift, diffraction intensities of the TiN gradually increase, and microhardness of the composites also increases from (228±13) HV to (403±20) HV with increasing TiN content. When the mass fraction of TiN is increased to 7.5%, wear resistance of the composites increases by 29.2% compared with that of CP-Ti. It shows that the addition of TiN particles can improve the microhardness and wear resistance of SLM-produced Ti-based composites.