Microstructure and properties of CePO₄ ceramic

Abstract

Cerium phosphate powders were synthesized by direct solid liquid reaction of cerium dioxide and phosphate acid at the Ce: P ratio of 1∶1. Phase-pure and fine grain size CePO₄ powers could be obtained by calcining the as received powders at the temperature higher than 600°C. It is demonstrated that the grain size and morphology of the CePO₄ powders were calcined at various temperatures. An interesting layered crystal structure and a series of microcracks that cross and occur along the extrusion stress direction on the extruded surface inside CePO₄ were observed. The ductility and machinability of CePO₄ ceramic are attributed to the layered structure. Continuous machining debris was observed on the turned surface.

Keywords

cerium phosphate / machinable / layered structure

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