Investigations of the effects of initial Zn concentration and sintering conditions on the phase behavior and mechanical properties of Zn-doped bcp

-, Gunawan and Sopyan, Iis and Mel, Maizirwan and -, Suryanto (2014) Investigations of the effects of initial Zn concentration and sintering conditions on the phase behavior and mechanical properties of Zn-doped bcp. Advances in Environmental Biology, 8 (3(Spe)). pp. 680-685. ISSN 1995-0756 E-ISSN 1998-1066

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Abstract

Sintering behaviour of zinc doped biphasic calcium phosphate was investigated over the temperature range of 1000–1300oC. The starting powders have been synthesized through Sol-Gel method. Zinc concentration was varied in the range of 0, 1, 2, 4, 5, 10 and 15mol%. After uniaxial pressing followed by isostatic pressing, the compacted samples were sintered via conventional pressureless sintering. The dense samples were studied in terms of phase stability, relative density, Vickers hardness, and fracture toughness. The results showed hydroxyapatite as the main phase and β-tricalcium phosphate as the secondary phase. However, parascholzite phase started to appear in 15mol%. Relative density results indicated that Zn-doped BCP dense samples showed the maximum relative density of 96.1% compared to 88.0% for Zn free-BCP fired at 1300oC. The maximum Vickers hardness and fracture toughness of 3.44 GPa and 1.43 MPa.m1/2 respectively, was achieved at 1200oC. This study showed that Zn doping improved the hardness and toughness of BCP.

Item Type:	Article (Journal)
Additional Information:	4809/37558
Uncontrolled Keywords:	Biomaterials, Ceramics, Characterization, Zinc doping, Biphasic calcium phosphate, Mechanical.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA164 Bioengineering T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	PROF. DR. IIS SOPYAN
Date Deposited:	04 Aug 2014 13:25
Last Modified:	18 Aug 2017 15:53
URI:	http://irep.iium.edu.my/id/eprint/37558

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