Paper Titles
Morphology Tailoring of Hydroxyapatite Nanoparticles by Hydrothermal Processing with Amino Acids
p.1533
Precipitation of Hydroxyapatite on Oxide Film Containing Ca and P by Hydrothermal Treatment
p.1537
Preparation of Porous Hydroxyapatite Scaffolds
p.1541
Study on Physicochemical Properties of the Carbonated Hydroxyapatite Bone Cement
p.1545
Mechanical Properties of Macroporous Biphasic Calcium Phosphate Bioceramics Fabricated Using a Porogen
p.1549
Gelcasting of Mechanochemically Synthesized Hydroxyapatite
p.1555
Synthesis of Calcium Phosphate/Gypsum Composite Powders
p.1559
Processing of Calcium Phosphate Porous Materials by 'Self-Setting'
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Setting Behavior of Fast-Setting Calcium Phosphate Cement with Mineral Phase of Bone
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Mechanical Properties of Macroporous Biphasic Calcium Phosphate Bioceramics Fabricated Using a Porogen

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Abstract:

Macroporous biphasic calcium phosphate bioceramics, for use as bone substitutes, have been fabricated by cold isostatically pressing and conventional sintering, using naphtalen or saccharose particles to produce macropores. The resulting ceramics, composite materials made of hydroxyapatite and b-tricalcium phosphate containing ~ 45% macropores and ~ 25% micropores, have been submitted to compression and three-point bending tests, toughness tests by single-edge-notched-bending, and spherical indentation tests. A new model is established to describe mechanical properties as a function of the amount and morphology of porosity, and propositions are made to optimise the fabrication procedure. Finally, those highly porous ceramics, although very brittle, exhibit a damage-tolerant contact behaviour, due to the compaction of the porous body under the indenter.

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Periodical:

Key Engineering Materials (Volumes 280-283)

Pages:

1549-1554

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.280-283.1549

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Online since:

February 2007

Authors:

Jean François Castagné, Jeanne Chamousset, Lise-Marie Minois, Alexandre Ponsinet, Jean Michel Bouler, Franck Tancret

Keywords:

Calcium Phosphate, Indentation, Mechanical Property, Modeling, Porosity, Sintering, Toughness

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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