摘要
羟基磷灰石是最有发展前途的生物硬组织替代材料之一,临床上采用在钛合金上涂覆HA生物活性涂层,涂基结合及涂基界面的整合是决定HA涂层性能和可靠性的关键因素。评述了钛基羟基磷灰石涂层的界面微观结构,指出界面上存在纳米氧化物薄膜是提高涂层结合强度的关键,并结合纳米多层薄膜和功能梯度膜的优点,提出改善涂基结合强度,发挥羟基磷灰石生物活性涂层的三明治式的梯度设计。
Hydroxyapatite is one of the most hopeful biomedical materials. Hydroxyapatite bioactive coating based on titanium is applied to clinic .The adhesion of coating to titanium substrate and the integrity of the substrate/coating interface are always concerned in determining the performance and reliability of any HA-coated devices.Interface structure and designing of functional gradient coating are reviewed, combining characteristics of nano-multilayers and functional gradient coating. Film of titanium oxide on interface layer is important for adhesion strength. To improve adhesion strength of coating to its substrate and hydroxyapatite bioactive,it is suggested functional gradient coating have sandwiched architecture.
出处
《表面技术》
EI
CAS
CSCD
2005年第1期58-61,共4页
Surface Technology
基金
国家重点基础研究规划项目(1999064705)支持
关键词
羟基磷灰石
生物陶瓷涂层
氧化钛
界面结构
梯度涂层
Hydroxyapatite
Bio-ceramic coating
Titanium oxide
Interface structure
Functional gradient coating
