Title

Influence of oxide-based sintering additives on densification and mechanical behavior of tricalcium phosphate (TCP)

Authors

Authors

H. A. Bhatt;S. J. Kalita

Comments

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Abbreviated Journal Title

J. Mater. Sci.-Mater. Med.

Keywords

GLASS-REINFORCED HYDROXYAPATITE; CERAMICS; SOLUBILITY; COMPOSITE; SURFACE; BONE; Engineering, Biomedical; Materials Science, Biomaterials

Abstract

In this research, we studied and analyzed the effects of four different oxide-based sintering additives on densification, mechanical behavior, biodegradation and biocompatibility of tricalcium phosphate (TCP) bioceramics. Selective sintering additives were introduced into pure TCP ceramics, in small quantities, through homogeneous mixing, using a mortar and pestle. The consequent powders of different compositions were pressed into cylindrical compacts, uniaxially and sintered at elevated temperatures, 1150 degrees C and 1250 degrees C, separately in a muffle furnace. X-ray powder diffraction technique was used to analyze the phase-purity of TCP after sintering. Hardness of these sintered specimens was evaluated using a Vickers hardness tester. Sintered cylindrical samples were tested under uniaxial compressive loading, as a function of composition to determine their failure strength. Biodegradation studies conducted using simulated body fluid under dynamic environment, revealed that these additives could control the rate of resorption and hardness degradation of TCP ceramics.

Journal Title

Journal of Materials Science-Materials in Medicine

Volume

18

Issue/Number

5

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

883

Last Page

893

WOS Identifier

WOS:000246564200025

ISSN

0957-4530

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