Hydroxyapatite coating on a cobalt base alloy by investment casting

被引：27
|
作者：
Escobedo, JC [1 ]
Ortiz, JC [1 ]
Almanza, JM [1 ]
Cortés, DA [1 ]
机构：
[1] CINVESTAV, Unidad Saltillo, Saltillo 25000, Coahuila, Mexico
来源：
SCRIPTA MATERIALIA | 2006年 / 54卷 / 09期
关键词：
coating; casting; biomaterials; hydroxyapatite; cobalt alloys;
D O I：
10.1016/j.scriptamat.2005.12.059
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A cobalt alloy was cast into preheated molds previously coated with hydroxyapatite powder. Two molds were used, one made of investment material and the other of pure graphite. Selected samples were heat treated. Both heat and non heat treated samples were immersed in simulated body fluid for 21 days at 37 degrees C. A ceramic layer, identified as hydroxyapatite, was formed on all the samples. A thicker layer was formed on the sample cast into the investment mold without heat treatment. A chemical interaction between the investment mold and hydroxyapatite takes place leading to a higher in vitro bioactivity. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1611 / 1615
页数：5
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