PREPARATION AND THERMAL-PROPERTIES OF A SERIES OF MIXED CALCIUM-COBALT PHOSPHATES

Mixed calcium-cobalt orthophosphates, of the general formula Ca3-xCox( PO4)2 with 0 less-than-or-equal-to x less-than-or-equal-to 1.1, were p repared by coprecipitation. Reactions which occur during heating from room temperature to 850-degrees-C, of either tricalcium phosphate or m ixed Ca-Co phosphates, were monitored by thermogravimetry and differen tial thermal analysis. The dried precipitates and the final products w ere characterised by X-ray diffraction and infrared spectroscopy.