POST-COMPOSITION CONTROL OF HYDROXYAPATITE IN AN AQUEOUS-MEDIUM

被引：11
作者：
HONDA, T
TAKAGI, M
UCHIDA, N
SAITO, K
UEMATSU, K
机构：
[1] Department of Chemistry, Faculty of Engineering, Nagaoka University of Technology, Nagaoka, Niigata, 940-21
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE | 1990年 / 1卷 / 02期
关键词：
D O I：
10.1007/BF00839078
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Composition control of hydroxyapatite by post-treatment in an alkaline solution was examined. Non-stoichiometric material having a Ca/P ratio of 1.60 was treated in distilled water (pH 6.5) and in a concentrated aqueous solution of ammonia (pH 11). The Ca/P ratio of the material increased with the latter treatment and the stoichiometric composition (Ca/P = 1.67) was achieved after six treatments. In contrast, essentially no change in composition was found with the former treatment. The treated powder had high thermal stability of nominally a stoichiometric composition. Composition change by incongruent dissolution is discussed.
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页码：114 / 117
页数：4
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