Hydroxyapatite coating on titanium by thermal substrate method in aqueous solution

被引:61
作者
Kuroda, K [1 ]
Ichino, R
Okido, M
Takai, O
机构
[1] Nagoya Univ, Ctr Integrated Res Sci & Engn, Nagoya, Aichi, Japan
[2] Nagoya Univ, Dept Mat Sci & Engn, Nagoya, Aichi, Japan
[3] Nagoya Univ, Dept Mat Proc Engn, Nagoya, Aichi, Japan
来源
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH | 2002年 / 59卷 / 02期
关键词
hydroxypatite; calcium phosphate; thermal substrate method; deposition process; precipitation;
D O I
10.1002/jbm.10002
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
A new hydrocoating method (the thermal substrate method) is proposed for coating calcium phosphates such as hydroxyapatite (HA), on titanium substrates in an aqueous solution. Several factors (e.g., the type of ion source, the heating time and temperature, and the surface roughness of the substrate) affected the characteristics of the precipitate formed by this method. The solution used included 3 mmol dm(-3) Ca(H2PO4)(2) and 7 mmol dm(-3) CaCl2, and its pH was adjusted to 6.5. The experimental studies were conducted under the following conditions: temperature 45-160 degreesC, heating time 10-20 min, and surface roughness of substrate #120-#2000 grid ground using energy paper. A high quality of precipitate, whose predominant component was HA, was obtained on titanium substrates by the thermal substrate method in an aqueous solution. No significant difference in the precipitates was found with the type of ion source. TI-ie amount of HA precipitate increased with increasing temperature and with increasing heating time. The features of the precipitate were different, depending on the surface roughtness of the substrate: HA regularly nucleated along the grooves of the rough surface (#120 and #400 grid), and in the case of the fine surface (#1200-#2000 grid), a uniform precipitation occurred. (C) 2001 John Wiley & Sons, Inc.
引用
收藏
页码:390 / 397
页数:8
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