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Title: Polymeric precursor route for the preparation of calcium phosphate compounds
Authors: Varma, HK
Kalkura, SN
Sivakumar, R
Keywords: Materials Science
Issue Date: 1998
Citation: 24 ,6;467-470
Abstract: A polymeric combustion synthesis is described for the preparation of calcium phosphate compounds. The polymeric gel containing calcium and phosphate ions were synthesised by concentrating a solution of calcium nitrate and ethyl phosphate. When the above gel was introduced to a furnace kept at 500 degrees C, a self combustion reaction was observed, leaving behind a calcium phosphate precursor powder. The above powder on heat treatment at 1000 degrees C resulted in beta-TCP, HAP or a mixture of the two phases depending on the Ca/P ratio in the gel. Dependence of Ca/P ratio on the composition of the calcium phosphate phase was studied by XRD. The morphological features of the precursor as well as the heat treated compounds were studied by SEM. The method offers an easy route for the preparation of beta-TCP or HAP in the powder or in the porous form. (C) 1998 Elsevier Science Limited and Techna S.r.l. All rights reserved.
URI: 10.1016/S0272-8842(97)00038-2
Appears in Collections:Journal Articles

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