Fabrication and sintering behavior of zinc-doped biphasic calcium phosphate bioceramics

Sopyan, Iis and Gunawan, Gunawan and Shah, Qasim Hussain and Mel, Maizirwan (2016) Fabrication and sintering behavior of zinc-doped biphasic calcium phosphate bioceramics. Materials and Manufacturing Processes, 31 (6). pp. 713-718. ISSN 1042-6914 E-ISSN 1532-2475

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Abstract

Dense bioceramics with improved mechanical properties have been prepared using sol–gel derived zinc doped biphasic calcium phosphate (BCP) powders. Zinc concentration was varied in the range of 0,1, 2, 4, 5, 10, and 15mol%. The compaction of the powders followed by sintering provided the dense ceramics. The effects of zinc concentration doped and sintering temperature on phase stability and mechanical characteristics were examined. The presence of Zn changed the phase of dense BCP, leading to improved mechanical properties. Zn free BCP attained the highest density of only 92.6% after 1400�C sintering, equally achieved by 4mol% Zn-doped BCP at a lower temperature of 1200�C. It is presumed that the steady increase in the compact density up to 4mol%zinc incorporation was contributed by progressive consolidation in the BCP structure, but the density dropped again from 5mol% until 15mol% due to low density b-tricalcium phosphate phase formation. This study showed that Zn doping was effective in producing high strength dense BCP with 3.40GPa hardness and 1.43MPa �m1=2 fracture toughness.

Item Type:	Article (Journal)
Additional Information:	4809/46963
Uncontrolled Keywords:	Biomaterials, Biphasic, Calcium phosphate, Ceramics, Characterization, Dopant, Mechanical, Zinc
Subjects:	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:	26 Mar 2018 09:02
Last Modified:	04 May 2018 14:06
URI:	http://irep.iium.edu.my/id/eprint/46963

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