作　　者： ; ; ; ; ; ;

机构地区： 中南大学材料科学与工程学院粉末冶金国家重点实验室

出　　处： 《粉末冶金材料科学与工程》 2001年第4期328-332,共5页

摘　　要： 电沉积羟基磷灰石涂层具有工艺简单、过程易控制、适于在复杂表面制备厚度均匀涂层的特点.沉积液的Ca/P比直接影响涂层中的物相组成与涂层形貌.作者采用电沉积与后续热处理相结合的工艺,用低Ca/P比溶液在金属钛表面沉积羟基磷灰石(HA)涂层.利用X射线衍射仪、透射电镜和扫描电镜分析涂层中物相组成及后续热处理对涂层中物相和涂层形貌的影响.结果表明:随电压与温度的升高,涂层中羟基磷灰石含量增加;空气中500℃热处理后,涂层基本转化为羟基磷灰石,其Ca/P比约为1.61;热处理前,涂层由块状和条状物质组成;热处理后,涂层形貌并未改变,它由纳米颗粒的HA凝聚烧结而成. The electro deposition process and heat treatment are used to fabricate hydroxyapaite biocoating onthe surface of Ti-based material in low Ca/P ratio solution. XRD, SEM and TEM are used to analyze thephase composition, the effect of treatment on the phase composition and the morphology of the coating.The results show that the content of HA in the coating increases with the voltage and the temperature in-creasing; after heat treatment at 500 ℃, the phase composition of coating is almost HA in which theCa/P ratio is 1. 61; the coating iscomposed of band-like and partical-like objects which are not changedand aggregated by nano hydroxyapaitesafter heat treatment.

关 键 词： 羟基磷灰石 电沉积 生物涂层

领　　域： [化学工程] [化学工程]