Bioactivity Investigations with Calcia Magnesia Based Composites

The bioactivity and physico-mechanical properties of calcia magnesia based composites developed in this study were investigated. Different composite mixtures containing calcia-magnesia have been processed with the addition of alumina, silica or zircon. These system powders were formed and fired at t...

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Bibliographic Details
Published in:材料科学与工程：中英文A版 2015 (1), p.21-36
Main Author: Emad Mohamed Mohamed Ewais Amira Moustafa Karoline Pardun Kurosch Rezwan
Format: Article
Language:Chinese
Subjects:
X射线光谱法
扫描电子显微镜
氧化镁
物理机械性能
生物活性
生物陶瓷材料
钙基
镁复合材料
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Summary:The bioactivity and physico-mechanical properties of calcia magnesia based composites developed in this study were investigated. Different composite mixtures containing calcia-magnesia have been processed with the addition of alumina, silica or zircon. These system powders were formed and fired at two different temperatures. The produced composites were characterized by means of X-ray diffraction, SEM （scanning electron microscope） equipped with EDS （energy dispersive X-ray spectrometry）, density and apparent porosity measurements, mechanical testing and in-vitro evaluation in a SBF （simulated body fluid） solution. The compositions termed ＇Ⅰ＇, ＂Ⅱ＂ and ＂Ⅲ＂ gave clear tendency towards the formation-ability of HA （hydroxyapatite）. Composite ＂1＂ gave cubic and spindle HA crystallite, while composites ＂Ⅱ＂ and ＂lIl＂ fired at 1,300 and 1,400 ℃ formed typically ＂cauliflower＂ morphology and their evaluated physico-mechanical properties are similar to the properties of human cortical bone. Thus, composites ＂Ⅱ＂ and ＂Ⅲ＂
ISSN:2161-6213