热处理对微束等离子喷涂羟基磷灰石涂层的影响  

Effect of Thermal Treatment on Microplasma Sprayed HA Coating

作　　者：赵秋颖[1] 贺定勇[1] 李晓延[1] 刘艳[1] 蒋建敏[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100124

出　　处：《中国表面工程》2010年第4期60-64,69,共6页China Surface Engineering

基　　金：北京市教委科技发展计划重点项目(KZ200610005002)

摘　　要：羟基磷灰石由于其良好的生物活性,被广泛的用作医用植入体的表面涂层材料。采用微束等离子喷涂(MicroplasmaSpraying,MPS)工艺在Ti–6Al–4V基体上制备羟基磷灰石涂层,通过扫描电镜(SEM)、X射线衍射(XRD)和傅里叶红外光谱(FTIR)分析了热处理对涂层相组成和表面形貌的影响规律。研究表明:微束等离子喷涂制备的羟基磷灰石涂层在经过热处理后结晶度提高,并且非晶相和杂质相转化成为HA结晶相。同时,羟基和磷酸根的完整性得到了恢复。过高的热处理温度易引起涂层裂纹等缺陷的增加,也容易造成羟基脱离造成HA分解。合理的热处理温度范围为600～700℃,保温时间为3h。Hydroxyapatite (HA) is widely used as surface coatings on biomedical metallic implants because of its good bioactivity. HA coatings were deposited onto Ti-6A-l4V substrate by microplasma spraying (MPS) in this research. The effect of heat treatment on the phase and surface morphology of HA coatings is discussed by scanning electron microscopy (SEM), X-ray diffraction (XRD), and fourier-transform infrared (FTIR) analysis. The results from the present investigation suggest that the crystallinity of MPS coatin...

关 键 词：微束等离子喷涂 羟基磷灰石涂层 热处理 

分 类 号：TG174.444[金属学及工艺—金属表面处理]