Characterization of hydroxyapatite and titanium coatings sputtered on Ti-6Al-4V substrate

被引:0
作者
Ding, SJ [1 ]
Ju, CP [1 ]
Lin, JHC [1 ]
机构
[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan
来源
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH | 1999年 / 44卷 / 03期
关键词
hydroxyapatite; titanium; sputtering; microstructure;
D O I
10.1002/(SICI)1097-4636(19990305)44:3<266::AID-JBM5>3.0.CO;2-4
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
A series of thin (<10 mu m), single-layered HA/Ti coatings were deposited on Ti-6Al-4V substrate using a radio frequency magnetron-assisted sputtering system. The adhesion strength, microstructure, and chemistry of the coatings were characterized. Experimental results showed that higher Ti contents in targets or coatings resulted in higher deposition rates. When Ti was added the highly crystalline structure of monolithic HA coating was largely disrupted and the coating became amorphous-like. The highly crystalline structure of the monolithic Ti coating was also disrupted by introducing small amounts of Ca, P, and O into the coating. The HA/Ti coatings had quite uniform thicknesses and appeared smooth, dense, and well bonded to the substrate. A scanning electron microscope with an energy dispersive spectroscopy system showed that monolithic HA, 95HA/5Ti, 25HA/75Ti, and 50HA/50Ti coatings had the lowest Ca/P ratios while the 75HA/25Ti coating had the highest. The adhesion strengths of all coatings were between 60 and 80 MPa. (C) 1999 John Wiley & Sons, Inc.
引用
收藏
页码:266 / 279
页数:14
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