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Apparent porosity of porous bioceramics prepared with small organic foam spheres as the pore-making reagent

Published online by Cambridge University Press:  09 July 2018

Chuisheng Zeng ,
Xiaoming Chen ,
Yuhua Yan ,
Xiaoying Tang ,
Yilong Liang ,
Zhiqiang Zhao  and
Yanjun Zeng
Chuisheng Zeng
Affiliation:
College of Bio-Information, Chongqing University of Post & Telecommunication, Chongqing 400065, China
Xiaoming Chen
Affiliation:
Biomedical Materials and Engineering Center, Wuhan University of Technology, Wuhan 430070, China
Yuhua Yan
Affiliation:
Biomedical Materials and Engineering Center, Wuhan University of Technology, Wuhan 430070, China
Xiaoying Tang
Affiliation:
School of Life, Department of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China
Yilong Liang
Affiliation:
College of Bio-Information, Chongqing University of Post & Telecommunication, Chongqing 400065, China
Zhiqiang Zhao
Affiliation:
College of Bio-Information, Chongqing University of Post & Telecommunication, Chongqing 400065, China
Yanjun Zeng*
Affiliation:
Biomedical Engineering Center, Beijing University of Technology, Beijing 100022, China
*
*E-mail: yjzeng@bjut.edu.cn
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Abstract

This study focuses on the main factors determining the apparent porosity of porous bioceramics prepared using small organic foam spheres as the pore-making reagent, in order to determine the best technical parameters for preparing porous bioceramics. In every experiment, only one of these factors (the time of heating, the sintering temperature, the mass ratio between small organic foam spheres and beta-tricalcium phosphate (β-TCP) powder, and the rate of the temperature rise) was changed, while the others were kept constant. In each case the apparent porosity was tested and the relation between the specific variable and apparent porosity was observed. Finally, the optimum technical parameters were deduced. The apparent porosity shows an inverse linear relation to the time of heating and the sintering temperature, and is approximately proportional to the mass ratio between the small organic foam spheres and the β-TCP powder and the rate of temperature rise. These factors have important influences on the apparent porosity. The optimum conditions were: heating time (soak time) 120 min, sintering temperature 850ºC, mass ratio 0.25, and a rate of temperature increase of 120ºC h–1.

Keywords

porous bioceramicsheating timetime of heat preservationsoak timesintering temperatureβ-tricalcium phosphaterate of temperature increase
Type
Research Article
Information
Clay Minerals , Volume 45 , Issue 4 , December 2010 , pp. 449 - 452
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2010

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