NiTi表面电化学方法制备HA生物涂层的工艺研究  

Experiment Study of Fabrication of HA Biocoatings on the Surface of NiTi by Electrochemical Synthesis

作　　者：尹燕[1] 夏天东[1] 赵文军[1] 王晓军[1] 刘天佐[1] 

机构地区：[1]甘肃工业大学甘肃省省部共建有色金属材料国家重点实验室,甘肃兰州730050

出　　处：《稀有金属材料与工程》2004年第11期1229-1232,共4页Rare Metal Materials and Engineering

摘　　要：系统研究了 NiTi 形状记忆合金表面电化学方法制备 HA 生物涂层过程中工艺参数对涂层相组成及其结构和形貌的影响,得出了最佳沉积规范,在该规范下沉积的涂层均由 CaHPO4·2H2O 组成,经碱处理后完全转变为 HA。所制备的 HA 涂层均匀致密,一定条件下涂层形貌由传统的针状转变为片层状。初步探讨了 HA 涂层形貌发生转变的机理。The effects of experiment parameters on the phase constitution and the structure morphologies of the coating on the surface of NiTi shape memory alloy fabricated by electrochemical synthesis was studied systemly. The best proper parameters was obtained and the results show that the electrochemical deposited coatings was CaHPO4 . 2H(2)O, and then was transformed into HA after treated by alkaline solution in this situation. The coating featured a homogeneous and compact appearance. Under a certain situation the morphologies of the coating transformed from traditional needle shape into piece - layer shape and the mechanism of the morphologies transformation was canvassed rudimently.

关 键 词：NITI形状记忆合金 HA涂层 电化学沉积 工艺 

分 类 号：TG174[金属学及工艺—金属表面处理]