Nanocrystalline Hydroxyapatite Ceramics Prepared by Hydrolysis in Polyol Medium, Microstructure and Mechanical Properties after Spark Plasma Sintering | Zendy

Abderrahmen Mechay | Zendy; N. Jouini | Zendy; Frédéric Schœnstein | Zendy; F. Tétard | Zendy; Hafed El Feki | Zendy

Open Access

Nanocrystalline Hydroxyapatite Ceramics Prepared by Hydrolysis in Polyol Medium, Microstructure and Mechanical Properties after Spark Plasma Sintering

Author(s) -

Abderrahmen Mechay,

N. Jouini,

Frédéric Schœnstein,

F. Tétard,

Hafed El Feki

Publication year - 2013

Publication title -

journal of advances in chemistry

Language(s) - English

Resource type - Journals

ISSN - 2321-807X

DOI - 10.24297/jac.v6i3.6594

Subject(s) - spark plasma sintering , materials science , nanocrystalline material , microstructure , sintering , ceramic , fracture toughness , indentation hardness , vickers hardness test , polyol , decomposition , composite material , chemical engineering , chemistry , nanotechnology , organic chemistry , engineering , polyurethane

This Letter describes a new approach for the synthesis of hydroxyapatite (HA) nanoparticles by polyol process has been successfully conducted by spark plasma sintering process, resulting in a dense hydroxyapatite compacts. Besides, the sintering behaviour of hydroxyapatite powders at different temperatures ranging from 800°C to 950°C at 50 MPa was studied. The microstructure, Vickers microhardness, fracture toughness and density are described. The suitable sintering condition under the pressure of 50 MPa is 900°C for 5 min. A maximum value of the density was reached at around 900°C, and then decreased with further increase in the temperature due to the decomposition of hydroxyapatite into β-tricalcium phosphates.

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