两步电化学沉积技术制备功能陶瓷/金属复合镀层  

Functional Ceramic/Metal Composite Coatings Prepared by Two-step Electrodeposition Technique

作　　者：张建民[1] 魏爱卿[1] 

机构地区：[1]郑州大学化学系,河南郑州450052

出　　处：《化学研究》2003年第4期1-3,6,共4页Chemical Research

基　　金：教育部留学回国人员科研启动基金资助项目(2003年).

摘　　要：通过两步电化学沉积技术,在医用金属表面得到羟基磷灰石生物活性陶瓷/金属复合镀层.从含有硝酸钙和磷酸二氢氨的溶液中,首先通过恒流模式电化学沉积钙磷生物陶瓷;然后采用恒压模式,在多孔的生物陶瓷沉积层中嵌入金属骨架,从而得到具有良好结合力的羟基磷灰石/金属复合镀层.实验结果表明在复合镀层中作为骨架的金属镍含量约为31%时,复合镀层与基底合金之间的结合力达到21.2MPa.A two-step electrodeposition method was developed to prepare hydroxyapatite bioactive ceramic/metal composite coatings on surgical metal surface. Calcium phosphate bioceramics were first electrodeposited in galvanostat mode from the electrolyte containing Ca(NO_(3))_(2) and NH_(4)H_(2)PO_(4), and then nickel was embedded into the porous bioceramic coating in potentiostat mode to obtain hydroapatite/metal composite coatings with good bonding strength. The experimental result showed that when nickel content in the composite coating was about 31 %, the average bond strength between the composite coating and the substrate was tested to be above 21.2 MPa.

关 键 词：电化学沉积 制备 功能陶瓷 金属复合镀层 羟基磷灰石 生物活性陶瓷 

分 类 号：TQ174.759[化学工程—陶瓷工业]