alexa Zirconia Effect on the Bioactivity and the Mechanical Properties of Calcium Magnesium Silicate Ceramics at (CaO+MgO)/SiO2 Molar Ratio Close to Unity
ISSN:2090-5025

Bioceramics Development and Applications
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Research Article

Zirconia Effect on the Bioactivity and the Mechanical Properties of Calcium Magnesium Silicate Ceramics at (CaO+MgO)/SiO2 Molar Ratio Close to Unity

Amira MM Amin1, Emad MM Ewais1*, Yasser MZ Ahmed1, Eman A Ashor2, Ulrike Hess3 and Kurosch Rezwan3

1Refractory and Ceramic Materials Division (RCMD), Advanced Materials Department, Central Metallurgical R and D Institute (CMRDI), P.O. Box 87, Helwan, 11421 Cairo, Egypt

2Chemical Engineering Department, Faculty of Engineering, El-Minia University, El-Minia, Egypt

3Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, 28359 Bremen, Germany

Corresponding Author:
Emad M M Ewais
Refractory and Ceramic Materials Division (RCMD)
Advanced Materials Department
Central Metallurgical R and D Institute (CMRDI)
P.O. Box 87, Helwan, 11421 Cairo, Egypt
Tel: 201002395435
Fax: 20238621782
E-mail: [email protected]

Received date: December 19, 2015 Accepted date: January 08, 2016 Published date: January 19, 2016

Citation: Amin AMM, Ewais EMM, Ahmed YMZ, Ashor EA, Hess U, et al. (2016) Zirconia Effect on the Bioactivity and the Mechanical Properties of Calcium Magnesium Silicate Ceramics at (Cao+Mgo)/SiO2 Molar Ratio Close to Unity. Bioceram Dev Appl 6:088. doi:10.4172/2090-5025.100088

Copyright: © 2015 Amin AMM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

New ceramic composites from calcia-magnesia-silica system at a molar ratio of (CaO-MgO)/SiO2 closes to the unity and the addition of different amounts of zirconia (5 wt %, 15 wt % and 25 wt %) have been investigated. These systems powders were formed and fired at 1310 ± 20°C for 2 hr. Phase composition, microstructure, physical and mechanical properties of these composites were determined. The in-vitro bioactivities of these sintered composites were investigated by analysis of their ability for the formation of hydroxyapatite (HA) using SEM-EDS after their soaking in the simulated body fluid (SBF) for 7 days. The findings indicated that beginning of HA formation on the surface of all investigated composites. However, the composite containing 5 wt % ZrO2 gave clear tendency toward the formation-ability of HA typical to cauliflower morphology. The mechanical properties of the promised bioactive composite in term of Vickers hardness and fracture toughness were ~3 Gpa and ~2 Mpa. m1/2, respectively. The ceramic composite containing 5 wt % ZrO2 might be nominated to be implanted material because their property is quite similar to the properties of human cortical bone.

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