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采用微弧氧化技术在TC4钛合金表面制备复合陶瓷膜,研究了在Na2SiO3-NaH2PO4体系电解液中分别添加K2ZrF6和氧化锆粉对膜层组织结构和性能的影响。利用扫描电镜(SEM)和X射线衍射仪(XRD)分析膜层的微观组织和相组成。用MMW-1A万能摩擦磨损试验机对复合陶瓷膜进行了耐磨性能测试。结果表明,当溶液中分别添加了K2ZrF6和氧化锆粉后,都会使陶瓷膜的厚度增加,膜层表面粗糙度降低,且膜层中大尺寸缺陷减少。添加K2ZrF6和氧化锆粉所制备的膜层中主要由金红石型TiO2和ZrO2相组成,且添加氧化锆粉制备的陶瓷膜中的ZrO2含量比添加K2ZrF6制备的膜中含量要多。添加K2ZrF6和氧化锆粉所制备的陶瓷膜的耐磨性能得到提高。
The effects of K2ZrF6 and zirconia powder on the microstructure and properties of the film were studied by using micro-arc oxidation technique on the surface of TC4 titanium alloy. The microstructure and phase composition of the film were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). MMW-1A universal friction and wear testing machine composite ceramic membrane wear resistance test. The results showed that the addition of K2ZrF6 and zirconia powder to the solution both increased the thickness of the ceramic film, decreased the surface roughness of the film and reduced the large size defects in the film. The films prepared by adding K2ZrF6 and zirconia powders are mainly composed of rutile TiO2 and ZrO2 phases, and the content of ZrO2 in the ceramic films prepared by adding zirconia powder is higher than that of the films prepared by adding K2ZrF6. The wear resistance of ceramic films prepared by adding K2ZrF6 and zirconia powder is improved.