TaN纳米颗粒对电泳沉积PEEK涂层显微组织、力学性能和摩擦学性能的影响

Effects of TaN nanoparticles on microstructure,mechanical properties and tribological performance of PEEK coating prepared by electrophoretic deposition

为解决钛的摩擦、磨损和润滑问题,通过电泳沉积制备一系列TaN/PEEK(聚醚−醚−酮)涂层,并探讨TaN纳米颗粒对涂层显微组织、力学性能和摩擦学性能的影响。结果表明,在PEEK涂层中引入TaN纳米颗粒可有效提高沉积效率,增强材料抗变形能力,同时还可增加涂层的硬度、弹性模量以及与基底之间的结合强度。与纯PEEK涂层相比,P-TN-3样品的摩擦因数降低31.25%,耐磨性大幅度提高,其比磨损率由9.42×10^(−5)降低到1.62×10^(−5 )mm^(3)·N^(−1)·m^(−1)。电泳沉积制备的复合TaN/PEEK涂层均匀分布于钛合金基体表面,且与钛合金基体结合良好,TaN颗粒可有效提高PEEK涂层的强度,为钛合金提供耐磨保护作用。

In order to solve the friction,wear and lubrication problems of titanium,a series of TaN/ployether−ether−ketone(PEEK)coatings were developed by electrophoretic deposition,and the effects of TaN nanoparticles on the microstructure,mechanical properties and tribological performance of coatings were explored.Results manifest that the introduction of TaN nanoparticles into PEEK coatings could improve the deposition efficiency,enhance the resistant deform capacity,increase the hardness,elastic modulus and adhesive bonding strength.Compared with the pure PEEK coating,the friction coefficient of P-TN-3 was greatly reduced by 31.25%.The wear resistance of P-TN-3 was also improved in huge boost,and its specific wear rate was decreased from 9.42×10^(−5) to 1.62×10^(−5) mm^(3)·N^(−1)·m^(−1).The homogeneous composite TaN/PEEK coatings prepared by electrophoretic deposition were well-adhered to the titanium alloy substrate,TaN nanoparticles could improve the strength of PEEK coating,and provide wear-resistance protection for titanium alloys.