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

    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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