The aim of the study was to investigate the influence of microstructure and phase composition on the mechanical behaviour of hydroxyapatite (HAp) and biphasic HAp/beta-tricalcium phosphate (beta-TCP) bioceramic materials using nanoindentation. The formation of beta-TCP phase in the HAp ceramic had the predominant influence on the nanomechanical properties of compact ceramics. For investigated microstructures there appear to be a slight decrease in the elastic modulus with increasing load and a higher decrease in hardness, which are in agreement with upper bounds of the results reported in literature. Maximal value of reduced modulus and hardness is yielded with pure HAp, and is measured to be 133.76 GPa for average grain size of 3 mu m and 12.18 GPa for average grain size of 140 urn, respectively. The average modulus and hardness results for HAP/beta-TCP ceramics with higher (101.61 GPa, 6.76 GPa) and lower grain size (115.72 GPa, 8.76 GPa) show sufficient mechanical properties in orde...r to serve as hard tissue replacement material.
TY - JOUR
AU - Tang, C. Y.
AU - Uskoković, Petar
AU - Tsui, C. P.
AU - Veliović, Đ.
AU - Petrović, Rada
AU - Janaćković, Đorđe
PY - 2009
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1522
AB - The aim of the study was to investigate the influence of microstructure and phase composition on the mechanical behaviour of hydroxyapatite (HAp) and biphasic HAp/beta-tricalcium phosphate (beta-TCP) bioceramic materials using nanoindentation. The formation of beta-TCP phase in the HAp ceramic had the predominant influence on the nanomechanical properties of compact ceramics. For investigated microstructures there appear to be a slight decrease in the elastic modulus with increasing load and a higher decrease in hardness, which are in agreement with upper bounds of the results reported in literature. Maximal value of reduced modulus and hardness is yielded with pure HAp, and is measured to be 133.76 GPa for average grain size of 3 mu m and 12.18 GPa for average grain size of 140 urn, respectively. The average modulus and hardness results for HAP/beta-TCP ceramics with higher (101.61 GPa, 6.76 GPa) and lower grain size (115.72 GPa, 8.76 GPa) show sufficient mechanical properties in order to serve as hard tissue replacement material.
PB - Elsevier Sci Ltd, Oxford
T2 - Ceramics International
T1 - Influence of microstructure and phase composition on the nanoindentation characterization of bioceramic materials based on hydroxyapatite
EP - 2178
IS - 6
SP - 2171
VL - 35
DO - 10.1016/j.ceramint.2008.11.028
ER -
@article{
author = "Tang, C. Y. and Uskoković, Petar and Tsui, C. P. and Veliović, Đ. and Petrović, Rada and Janaćković, Đorđe",
year = "2009",
abstract = "The aim of the study was to investigate the influence of microstructure and phase composition on the mechanical behaviour of hydroxyapatite (HAp) and biphasic HAp/beta-tricalcium phosphate (beta-TCP) bioceramic materials using nanoindentation. The formation of beta-TCP phase in the HAp ceramic had the predominant influence on the nanomechanical properties of compact ceramics. For investigated microstructures there appear to be a slight decrease in the elastic modulus with increasing load and a higher decrease in hardness, which are in agreement with upper bounds of the results reported in literature. Maximal value of reduced modulus and hardness is yielded with pure HAp, and is measured to be 133.76 GPa for average grain size of 3 mu m and 12.18 GPa for average grain size of 140 urn, respectively. The average modulus and hardness results for HAP/beta-TCP ceramics with higher (101.61 GPa, 6.76 GPa) and lower grain size (115.72 GPa, 8.76 GPa) show sufficient mechanical properties in order to serve as hard tissue replacement material.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Influence of microstructure and phase composition on the nanoindentation characterization of bioceramic materials based on hydroxyapatite",
pages = "2178-2171",
number = "6",
volume = "35",
doi = "10.1016/j.ceramint.2008.11.028"
}
Tang, C. Y., Uskoković, P., Tsui, C. P., Veliović, Đ., Petrović, R.,& Janaćković, Đ.. (2009). Influence of microstructure and phase composition on the nanoindentation characterization of bioceramic materials based on hydroxyapatite. in Ceramics International
Elsevier Sci Ltd, Oxford., 35(6), 2171-2178.
https://doi.org/10.1016/j.ceramint.2008.11.028
Tang CY, Uskoković P, Tsui CP, Veliović Đ, Petrović R, Janaćković Đ. Influence of microstructure and phase composition on the nanoindentation characterization of bioceramic materials based on hydroxyapatite. in Ceramics International. 2009;35(6):2171-2178.
doi:10.1016/j.ceramint.2008.11.028 .
Tang, C. Y., Uskoković, Petar, Tsui, C. P., Veliović, Đ., Petrović, Rada, Janaćković, Đorđe, "Influence of microstructure and phase composition on the nanoindentation characterization of bioceramic materials based on hydroxyapatite" in Ceramics International, 35, no. 6 (2009):2171-2178,
https://doi.org/10.1016/j.ceramint.2008.11.028 . .
