Adzila, S. and Ramesh, S. and Sopyan, I. (2016) Properties of magnesium doped nanocrystalline hydroxyapatite synthesize by mechanochemical method. ARPN Journal of Engineering and Applied Sciences, 11 (24). pp. 14097-14100. ISSN 1819-6608,
Full text not available from this repository.Abstract
The sintering behaviour of Magnesium-doped nanocrystalline hydroxyapatite (MgHA) synthesized by mechanochemical method was investigated over the temperature range of 1000 °C to 1300 °C. The properties were investigated in terms of phase stability, bulk density and Vickers hardness. In the present research, a dry mechanochemical synthesis was successfully employed to synthesis a nanocrystalline MgHA powder without any secondary phases. Lower sintering temperature at 1000 °C produced β-TCP phase in MgHA in all concentrations. Hence, doping Mg2+ into HA has induced the formation of brushite and α-TCP where these phases were averagely increased with Mg2+ concentration. Increasing Mg2+ concentrations have led to the decreased of HA phase and increased the secondary phases. Mg2+ did not significantly improved the density of HA as the density decreased with Mg2+ doping at 1200 °C-1250 °C. However, Mg2+ increased the hardness of HA when sintered from 1000 °C to 1300 °C. The maximum hardness was obtained by 3% MgHA sintered at 1250 °C with 5.47 GPa.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Magnesium; Nanocrystalline; Hydroxyapatite; Mechanochemical; Vickers hardness |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 24 Oct 2017 01:49 |
| Last Modified: | 24 Oct 2017 01:49 |
| URI: | http://eprints.um.edu.my/id/eprint/18074 |
Actions (login required)
 |
View Item |
