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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    No. 6    December 2007

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Fabrication of CTP/HAp novel gradient composite bioceramics
SHEN Mei-ling(申美玲), ZHAO Zhong-wei(赵中伟), WEN Shi-mei(文士美),CHEN Xing-yu(陈星宇), LI Hong-gui(李洪桂)

School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China

Abstract:Calcium-titanium-phosphate(CaTi4(PO4)6, CTP)/hydroxyapatite(HAp) is a kind of novel gradient composite bioceramics, which has excellent biocompatibility and bioactivity. CTP ceramic film was synthesized one-step on the surface of titanium using micro-arc oxidation(MAO). The CTP/HAp composite bioceramics were prepared by soaking CTP film in HAp inducing solution for several days. XRD, SEM and EDX were used to characterize the bio-ceramic films phase and composition, morphology and component. The influence of electrolyte molar ratio of Ca to P and the current density to the synthesis of film was studied, and the optimized value of parameters above were 1/6 and 15A/dm2. The parameters of HAp inducing solution, such as component and pH value were also studied and the best pH value which is adjusted by NaOH is 6.4.

 

Key words: micro-arc oxidation; CaTi4(PO4)6; hydroxyapatite; bioceramic; deposit

ISSN 1672-7029
CN 43-1423/U

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