Effect of Spray Distance on Microstructure and Tribological Performance of Suspension Plasma-Sprayed Hydroxyapatite-Titania Composite Coatings
Effect of Spray Distance on Microstructure and Tribological Performance of Suspension Plasma-Sprayed Hydroxyapatite-Titania Composite Coatings
复制标题
喷涂距离对悬浮液等离子喷涂羟基磷灰石-二氧化钛复合涂层微观结构和摩擦学性能的影响
DOI：
10.1007/s11666-016-0453-1
复制
发表时间：
2016
影响因子：
3.1
通讯作者：
Zhu Peizhi
中科院分区：
文献类型：
--
作者：
Zhang Chao;Xu Haifeng;Geng Xin;Wang Jingjing;Xiao Jinkun;Zhu Peizhi
在Ti6Al4V合金表面制备羟基磷灰石(HA)-二氧化钛(TiO2)复合涂层，结合了合金基体的优良力学性能和涂层材料良好的生物相容性。本文采用悬浮等离子喷涂技术在Ti6Al4V基片上制备了HA-TiO2复合涂层。采用X射线衍射仪、扫描电子显微镜、傅立叶红外吸收光谱仪和摩擦试验机对涂层的组织结构和摩擦学性能进行了分析。结果表明，喷涂距离对涂层组织和摩擦学性能有重要影响。随着喷雾距离的增加，分解相的数量减少。喷涂距离从80 mm增加到110 mm时，SPS涂层的结晶HA含量增加，耐磨性降低。另外，由于不同喷涂距离所产生的基材温度不同，喷涂距离对涂层形貌有较大影响。此外，还观察到大量的羟基−和CO32−的存在，这有利于生物医学的应用。
Hydroxyapatite (HA)–titania (TiO2) composite coatings prepared on Ti6Al4V alloy surface can combine the excellent mechanical property of the alloy substrate and the good biocompatibility of the coating material. In this paper, HA–TiO2composite coatings were deposited on Ti6Al4V substrates using suspension plasma spray (SPS). X-ray diffraction, scanning electron microscopy, Fourier infrared absorption spectrometry and friction tests were used to analyze the microstructure and tribological properties of the obtained coatings. The results showed that the spray distance had an important influence on coating microstructure and tribological performance. The amount of decomposition phases decreased as the spray distance increased. The increase in spray distance from 80 to 110 mm improved the crystalline HA content and decreased the wear performance of the SPS coatings. In addition, the spray distance had a big effect on the coating morphology due to different substrate temperature resulting from different spray distance. Furthermore, a significant presence of OH−and CO32−was observed, which was favorable for the biomedical applications.