Development of triphasic calcium phosphate–carbon nanotubes (HA/TCP-CNT) composite: a preliminary study

Gunawan, Gunawan and Sopyan, Iis and Nurfaezah, Siti and Ammar, Mohd (2013) Development of triphasic calcium phosphate–carbon nanotubes (HA/TCP-CNT) composite: a preliminary study. Key Engineering Materials, 531-32. pp. 258-261. ISSN 1013-9826

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Abstract

Triphasic calcium phosphate, composed of a more stable phase hydroxyapatite (HA) and highly soluble tricalcium phosphates (α- and β-TCP) has been synthesized through hydrothermal method. In the present work, an in-situ method to disperse 1wt% multiwall carbon nanotubes (MWCNTs) within HA/TCP powder has been used in order to develop HA/TCP-CNTs composite. XRD results confirmed the formation of HA, α-TCP and β-TCP in both as-prepared powder and composite samples. The graphite peaks appeared in the composite samples as well. FTIR analysis of sintered compacted powder showed the formation of weak bands of PO43- as the temperature was increased. The sintered compacts were mechanically tested by Vickers microhardness indentation method. HA/TCP-CNTs composite was found to have a significant of Vickers Hardness of 1.98 GPa after 1100oC sintering. The morphology analysis showed that in-situ deposition technique provides homogeneous dispersion of CNTs in the calcium phosphate matrix.

Item Type:	Article (Journal)
Additional Information:	4809/28637
Uncontrolled Keywords:	Hydroxyapatite, α-TCP, β-TCP, Carbon Nanotubes, Hydrothermal method
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction T Technology > TP Chemical technology > TP785 Clay industries. Ceramics. Glass. Cement industries
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 Mar 2015 08:41
Last Modified:	04 Mar 2015 08:41
URI:	http://irep.iium.edu.my/id/eprint/28637

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