Paper Title:
Effects of Bismuth Oxide on the Properties of Calcium Phosphate Bioceramics
  Abstract

The aim of this work is to study the phase stability and sinterability of bismuth oxide (Bi2O3) doped HA ranging from 0.05 wt% to 1 wt%. The green samples were sintered in air at temperature ranging from 1000oC to 1400oC. In this experiment, the results from XRD analysis revealed that the stability of HA phase was disrupted when addition of 0.3, 0.5 and 1.0 wt% Bi2O3 were used and when samples sintered above 1100oC, 1000oC and 950oC, respectively. In general, HA containing 0.5 wt% of Bi2O3 and when sintered at 1000oC was found to be beneficial in enhancing densification, Young’s modulus, Vickers hardness and fracture toughness. Throughout the sintering regime, the highest value of relative bulk density of 98.7% was obtained for 0.5 wt% Bi2O3-doped HA when sintered at 1000oC. A maximum Young’s modulus of 119.2 GPa was observed for 0.1 wt% Bi2O3-doped HA when sintered at 1150oC. Additionally, 0.5 wt% Bi2O3-doped HA was able to achieve highest hardness of 6.04 GPa and fracture toughness of 1.21 MPam1/2 at sintering temperature of 1000oC. Furthermore, the Young’s modulus of HA was found to vary linearly with bulk density.

  Info
Periodical
Advanced Materials Research (Volumes 264-265)
Edited by
M.S.J. Hashmi, S. Mridha and S. Naher
Pages
1839-1848
DOI
10.4028/www.scientific.net/AMR.264-265.1839
Citation
W. H. Yeo, R. Singh, C. Y. Tan, K.L. Aw, R. Tolouei, H. Kelvin, I. Sopyan, W. D. Teng, E. Hoque, "Effects of Bismuth Oxide on the Properties of Calcium Phosphate Bioceramics", Advanced Materials Research, Vols. 264-265, pp. 1839-1848, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Fernando A. Costa Oliveira, J.A. Franco, Jorge Cruz Fernandes
84
Authors: Khiam Aik Khor, Yong Wan Gu, P. Cheang, F.Y.C. Boey
497
Authors: Iis Sopyan, Natasha Ahmad Nawawi, Qasim Hussain Shah
Abstract:Dense pure biphasic calcium phosphate (BCP) and Mn-doped BCP ceramics were fabricated via uniaxial pressing using the sol-gel derived...
393
Authors: Guo Qiang Luo, Qiang Shen, Q.Z. Li, J. Li, Dong Ming Zhang, Lian Meng Zhang
Abstract:In this study, SnO2-based ceramics, with CuO as sintering aid and Sb2O3 as activator of the electrical conductivity, was obtained by...
367
Authors: Qi Long Guo, Jun Guo Li, Qiang Shen, Lian Meng Zhang
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:The sinterability of ZrB2-20vol.% SiC ceramics by high-energy ball milling as well as introduction of Zr and Al as sintering...
723