摘要
采用燃烧合成 水热法制备生物陶瓷涂层,用X射线衍射(XRD)、扫描电镜(SEM)和粘接拉伸法研究了涂层物相组成、形貌以及涂层与基体的界面结合强度.研究结果表明:燃烧合成后,涂层主要由HA+β Ca3(PO4)2组成,水热处理2h后,涂层中HA含量增加,延长水热处理时间,可得到纯HA涂层;涂层厚约为20μm;在燃烧合成试剂中添加助燃剂,涂层中相成分复杂化,但水热处理10h后,可得到纯羟基磷灰石相,涂层厚度增加,达到50μm左右;同时,添加助燃剂可大大提高界面结合强度,达到13.66MPa.
Bioceramic coating is prepared by combustion synthesishydrothermal treatment. XRD, SEM and bondingtensile are used to analyze the phase composition of coating, microstructure and the bonding strength. The results show that the coating is composed of HA and βCa3(PO4)2 after combustion synthesis. After hydrothermal treatment for 2 h, the volume of HA increases. A coating whose thickness is 20 μm and pure HA is obtained. When combustible substance is added, mixed phase appears but changes into pure HA after hydrothermal treatment for 10 h. The coating thickness is 50 μm and the bonding strength increases to 13.66 MPa.
出处
《中南工业大学学报》
CSCD
北大核心
2002年第6期604-607,共4页
Journal of Central South University of Technology(Natural Science)
基金
湖南省自然科学基金资助项目(01JJY2053)
