Abstract

Hanan H. Abo-almaged*, Reham M. Khattab and Heba E. H. Sadek

DOI : http://dx.doi.org/10.13005/ojc/320126

ZrO₂ nano-powders with the substitution of; 5, 12 and 17 mole %CeO₂ contents were prepared by a microwave combustion method utilizing Ce(NO₃)₃.6H₂O, ZrN₂O₇.xH₂O and urea as precursors. The obtained cakes were calcined at different temperatures. XRD, SEM, EDS, and TEM techniques were used to determine the effect of microwave and calcining temperature between 450 to 1000^oC on the prepared powders. The results obtained show the formation of a single phase; a tetragonal solid solution with a particle size ranging between 10 to 20 nm. The densification parameters, phase compositions, microstructures and mechanical properties (micro-hardness) were investigated.

Microwave combustion method; ZrO2/CeO2 ceramic; XRD; nano particles; TEM; SEM

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