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Biphasic composite of Tricalcium phosphate reinforced with Hydroxyapatite Whiskers

Published online by Cambridge University Press:  26 February 2011

B Viswanath  and
Ravishankar Narayanan
B Viswanath
Affiliation:
viswa@mrc.iisc.ernet.in, Indian Institute of Science, Materials Research Centre, India
Ravishankar Narayanan
Affiliation:
nravi@mrc.iisc.ernet.in, Indian Institute of Science, Materials Research Centre, India
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Abstract

Biphasic calcium phosphates have received considerable attention due to their optimum dissolution rate in the human body after implantation. These materials are composed of hydroxyapatite (HA) and resorbable tricalcium phosphate (TCP). In the present investigation, HA whiskers are reinforced into TCP to enhance the mechanical properties of this biphasic composite. Various amounts (30-50 wt%) HA whiskers are reinforced in TCP matrix. Microstructural characterization has been carried out using field-emission scanning electron microscope. Mechanical properties have been investigated by microindentation in a universal testing machine (UTM). As TCP is resorbable, it will dissolve in body fluid and there is a strong possibility for the faceted HA whiskers to interact with functional groups present in the body fluid surroundings.

Keywords

biomedicalceramiccomposite
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 898: Symposium L – Mechanical Behavior of Biological and Biomimetic Materials , 2005 , 0898-L05-20
Copyright
Copyright © Materials Research Society 2006

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