Influence of Processing on Mechanical Properties of Hydroxyapatite

Marize Varella de Oliveira; Magna Monteiro Schaerer; Robson Pacheco Pereira; Ieda Maria V. Caminha; Silvia R. A. Santos; Antonella M. Rossi

doi:10.4028/www.scientific.net/KEM.396-398.587

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 396-398Influence of Processing on Mechanical Properties...

Influence of Processing on Mechanical Properties of Hydroxyapatite

Abstract:

In the present work, mechanical properties of a stoichiometric hydroxyapatite (HA), synthesized by hydrothermal method, with 1.66 Ca/P molar ratio are investigated as a function of the processing parameters. Cylindrical samples were processed by uniaxial compacting, followed by sintering, aiming to obtain high density HA samples. Density values were obtained by the geometric method and SEM images were taken from HA samples in order to characterize their topography and to determine the grain size for each set of samples. Vickers micro-hardness was measured for each set of samples. Compressive strength of cylindrical samples with 2.0 mean diameter/height ratio was measured reporting load to failure divided by the cross-sectional area of the samples. Vickers micro-hardness and compaction strength values of the samples were found to be in agreement with the relative density and grain size values.

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Periodical:

Key Engineering Materials (Volumes 396-398)

Pages:

587-590

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.396-398.587

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Online since:

October 2008

Authors:

Marize Varella de Oliveira, Magna Monteiro Schaerer, Robson Pacheco Pereira, Ieda Maria V. Caminha, Silvia R. A. Santos, Antonella M. Rossi

Keywords:

Hydroxyapatite (HAP), Mechanical Property, Process Parameter

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