Effect of Fuels on the Combustion Synthesis of NiAl2O4 Spinel Particles

Spinels constitute an advanced group ofmaterials with great technologial appeal, being able to be applied as magnetic materials, semiconductors, pigments, catalysts, refra ctories and electronic ceramics. In this paper; we reported the preparation of NiAl2O4 spinels by low temperature combustion technique using glycine and urea as fuels. The resulting powder was chracterized by XRD, particle size analysis and SEM. The XRD patterns show that the combustion technique was excellent to prepare single - phased cubic NiAl2O4 par ticles and the crystallite sizes were fo und to be around 14 nm. From the particle size analysis, it was fo und that the 50 % of the particles lie below 30 um. The micrographs show the fo rmation of fluffy agglomerates composed offi ne particles.