钛基掺锶聚磷酸钙涂层的制备工艺及表征

Preparation and Characterization of Strontium-doped Calcium Polyphosphate Coatings

采用等离子喷涂法制备Ti基掺锶聚磷酸钙(SCPP)粉体涂层,通过条件控制制得一系列涂层。利用电感耦合等离子体质谱仪、X射线衍射仪、扫描电子显微镜及万能材料实验机对涂层材料的元素组成、晶相和显微结构及界面结合强度进行分析和表征。分析结果表明,在涂层SCPP中,各元素比例不变,SCPP成分没有发生改变,能够保持原有的晶格结构,未发生相分解等现象,涂层表面略显粗糙且SCPP结合致密,较普通的等离子喷涂具有较好的界面结合强度以及良好的生物相容性。为进一步制备出一种具有适当表面粗糙度和较高界面结合强度的SCPP生物涂层提供了实验基础。

In order to develop a novel coating for tissue engineering,strontium-doped calcium polyphosphate（SCPP） nano-powders were coated on titanium substrate using the plasma-spraying technique with a series of different conditions.Constitution,phase composition,microstructure and bonding strength of the powders were investigated by inductively coupled plasma-mass spectrometer,X-ray diffraction analysis,scanning electron microscope and strength test machine.Results showed that the main phase of these coatings is remain β-crystal SCPP.The surface and cross-sectional morphology of coating showed SCPP coatings are dense.The bonding strength and between the coating and titanium is higher than others and the coating exhibit a good biocompatibility by plasma-spraying.The condition in which the obtained coatings exhibited appropriate roughness of the surface and higher bonding strength with the substrates will be the reference for the investigation of better SCPP coatings in next step of the study.