Document Type
Conference Item
Publication Date
11-1-2013
Abstract
Hydroxyapatite is one of the most potential bioceramic to be applied into the medical and dental field due to its biocompatibility with human hard tissue. However, its properties are still behind those of hard tissues and further studies had to be done to improve its mechanical properties. In the current work, hydroxyapatite powder was prepared via the wet chemical method. Subsequently, the powder was doped with zirconia with weight percentages of 0.05 %, 0.1 %, 0.5 %, 1 % and 5 %. The bulks were then sintered at temperatures of 11OO°C, 1200°C and 1300°C at atmospheric pressure. The results revealed that the highest relative density of 99.9 % was obtained for samples doped with 0.1 % zirconia when sintered at 1200°C. Nevertheless, samples doped with 5 wt.% of zirconia showed relative lower relative densities regardless of sintering temperature. This was attributed by the presence of secondary phase which has cause decomposition during sintering.
Keywords
Hydroxyapatite, medical, zirconia, temperature, decomposition, sintering
Divisions
fac_eng
Event Title
1st International Conference on the Science & Engineering of Materials
Event Location
Sunway Putra Hotel, Kuala Lumpur, Malaysia
Event Dates
13-14 November 2013
Event Type
conference