The effects of sintering behavior of zirconia dopedhydroxyapatite for clinical applications
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...
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| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | en |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/15623/1/0001.pdf http://eprints.um.edu.my/15623/ |
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| Summary: | 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. |
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