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Synthesis of ceria-based ceramics by combustion technique

C. MATEI1, D. BERGER1,* , S. STOLERIU1, D. NEAGU1, E. STEFAN1

Affiliation

  1. University “Politehnica” of Bucharest, Faculty of Applied Chemistry and Material Science, 1-7 Polizu street, Bucharest, 011061, Romania

Abstract

Ce1-xGdx/SmxO2-δ (x=0.1, 0.2) powders were prepared by combustion method using corresponding metallic nitrates and different fuels (α-alanine, oxamic hydrazide and tartaric acid). Ce1-xGdx/SmxO2-δ powders were formed direct from combustion reaction in one single step when oxamic hydrazide or α-alanine is used as fuel. In the case of tartarate-based precursors, the fluorite phase has been formed by calcining the as-prepared powders (the powders resulted in the combustion reaction) at 500 °C, 3h. The structure and thermal decomposition of the precursors, isolated before the ignition of the reaction mixture, were studied by FTIR spectroscopy and thermal analysis (DTA-TG). The oxide powders were investigated by X-ray diffraction and scanning electron microscopy. Densification of Ce1-xGdx/SmxO2-δ (x=0.1, 0.2) ceramic bodies was studied function of the doping ion and sintering conditions..

Keywords

Combustion method, Solid oxide fuel cells, Ceria-based ceramics.

Submitted at: April 22, 2010
Accepted at: July 14, 2010

Citation

C. MATEI, D. BERGER, S. STOLERIU, D. NEAGU, E. STEFAN, Synthesis of ceria-based ceramics by combustion technique, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 7, pp. 1524-1529 (2010)