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Dense manganese doped biphasic calcium phosphate for load bearing bone implants

Iis, Sopyan and Ahmad Nawawi, Natasha and Shah, Qasim Hussain (2010) Dense manganese doped biphasic calcium phosphate for load bearing bone implants. Advanced Materials Research, 93-94. pp. 393-396. ISSN 1022-6680

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Abstract

Dense pure biphasic calcium phosphate (BCP) and Mn-doped BCP ceramics were fabricated via uniaxial pressing using the sol-gel derived powders. The compacted discs were sintered in air atmosphere with temperatures ranging from 1000 ºC to 1400 ºC. All powders have been proved to show HA and β-TCP phases only. Manganese doping improves the densification in the BCP structure as the relative density increased with Mn doping and also sintering temperature. Considerable grain growth has been observed at 1300 ºC for Mn-doped BCP samples compared to the pure BCP. 15 mol% Mn showed the maximum hardness value of 6.66 GPa at 1400 ºC compared to pure BCP of only 2.89 GPa. Similarly, the Mn-doped BCP has superior fracture toughness where it attained maximum values of 1.05 MPam1/2 at 1400 ºC compared to 0.72 MPam1/2 at 1300 ºC of pure BCP. In a nutshell, Mn doping has successfully brought improvement in the mechanical properties of the BCP.

Item Type: Article (Journal)
Additional Information: 4809/7055
Uncontrolled Keywords: dense, manganese doping, biphasic calcium phosphate, sintering
Subjects: T Technology > TP Chemical technology > TP785 Clay industries. Ceramics. Glass. Cement industries
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Dr Qasim Hussain Shah
Date Deposited: 20 Nov 2011 18:30
Last Modified: 18 Feb 2012 16:13
URI: http://irep.iium.edu.my/id/eprint/7055

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