Article ID Journal Published Year Pages File Type
1652010 Materials Letters 2008 4 Pages PDF
Abstract

Porous A-type carbonated hydroxyapatite (CHAp) spheres were synthesized in the high-pressure hydrothermal system by the template-directed method. The thermal stability of porous A-type CHAp spheres was first studied via calcining in the wide temperature range from 393 K up to 1173 K, analyzed by FT-IR, XRD and SEM. The results showed that the decomposition of porous A-type CHAp spheres went through two stages, owing to the release of the carbonate from the OH− channel and the collapse of apatite-type structure above 973 K, consecutively. The nanoparticles in situ replaced the flakelets of porous CHAp spheres and packed closely into new regular porous Ca3(PO4)2 spheres.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
Authors
, , , ,