Reactive plasma-aided RF sputtering deposition of hydroxyapatite bio-implant coatings

被引：26
|
作者：
Long, Jidong
Sim, Lina
Xu, Shuyan
Ostrikov, Kostya [1 ]
机构：
[1] Univ Sydney, Sch Phys, Plasma Nanosci Complex Syst, Sydney, NSW 2006, Australia
[2] Nanyang Technol Univ, NIE, Plasma Sources & Applicat Ctr, Singapore 637616, Singapore
[3] Nanyang Technol Univ, Inst Adv Studies, Singapore 637616, Singapore
来源：
CHEMICAL VAPOR DEPOSITION | 2007年 / 13卷 / 6-7期
关键词：
calcium phosphate; crystallization; hydroxyapatite; optical emission spectroscopy; RF sputtering deposition; simulated body fluid;
D O I：
10.1002/cvde.200606550
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The plasma-assisted RF sputtering deposition of a biocompatible, functionally graded calcium phosphate bioceramic on a Ti6Al4 V orthopedic alloy is reported. The chemical composition and presence of hydroxyapatite (HA), CaTiO3, and CaO mineral phases can be effectively controlled by the process parameters. At higher DC biases, the ratio [Ca]/[P] and the amount of CaO increase, whereas the HA content decreases. Optical emission spectroscopy suggests that CaO+ is the dominant species that responds to negative DC bias and controls calcium content. Biocompatibility tests in simulated body fluid confirm a positive biomimetic response evidenced by in-growth of an apatite layer after 24 h of immersion.
引用
收藏
页码：299 / 306
页数：8
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