Sintering effects of mullite-doping on mechanical properties of bovine hydroxyapatite

In this study, sintering effects on microstructural behavior of bovine derived hydroxyapatite doped with powder mullite are considered in the temperature range between 1000°C and 1300°C. Results show that maximum values of both compressive strength and microhardness are achieved in the samples sinte...

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Bibliographic Details
Published in:Materials Science & Engineering C 2017-08, Vol.77, p.470-475
Main Authors: Yetmez, M., Erkmen, Z.E., Kalkandelen, C., Ficai, A., Oktar, F.N.
Format: Article
Language:English
Subjects:
Aluminum Silicates
Animals
Bovine derived hydroxyapatite
Cattle
Compressive Strength
Durapatite - chemistry
Gehlenite
Hydroxyapatite
Materials science
Materials Testing
Mechanical properties
Microhardness
Microstructure
Mullite
Powder
Powders
Sintering
Sintering (powder metallurgy)
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Summary:In this study, sintering effects on microstructural behavior of bovine derived hydroxyapatite doped with powder mullite are considered in the temperature range between 1000°C and 1300°C. Results show that maximum values of both compressive strength and microhardness are achieved in the samples sintered at 1200°C for all mullite additions of 5, 7.5, 10 and 12.5wt%. Moreover, above 1000°C, decomposition of HA and new phase formations such as whitlockite and gehlenite play a major role in both compressive strength and microhardness properties which increase up to 10wt% mullite reinforcement. •Above 1000°C, decomposition of HA and new phase formations occur in HA doped with powder mullite.•Whitlockite and gehlenite play an important role in mechanical improvement up to 10wt% mullite reinforcement.
ISSN:0928-4931
1873-0191
DOI:10.1016/j.msec.2017.03.290