Synthesis and thermal behaviour of well-crystallized calcium-deficient phosphate apatite
(1989) Journal of Solid State Chemistry — Vol. 78, n° 2, p. 215-219 (1989)
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- Abstract
- Large crystals (0.5*0.5*10 mu m) of calcium-deficient hydroxyapatites (DAp's) have been synthesized by aqueous precipitation under controlled conditions of pH and temperature. The samples have been characterized using chemical analysis, temperature-programmed dehydration (TPR), X-ray diffraction, IR spectroscopy, and transmission electron microscopy. They show that very well-crystallized DAp's with Ca/P close to 1.50 can be obtained under well-selected synthesis conditions. The specimens presented typical TPR patterns, consisting of a diffuse evolution of water in the range 300-700 degrees C and a sharper one in the range 700-900 degrees C. The maximum temperatures of the TPR bands were found to be markedly higher for the DAp specimen having the largest crystal size.
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Mortier, A., Lemaître, J.-P., Rodrique, L., & Rouxhet, P. (1989). Synthesis and thermal behaviour of well-crystallized calcium-deficient phosphate apatite. Journal of Solid State Chemistry, 78(2), 215-219. https://hdl.handle.net/2078.5/148870 (Original work published 1989)