Engineering CeO₂-Gd₂O₃ ceramic nanopowder with precise morphology by engineering of intermediate nano-reactors followed with 'nano-blast' calcination/deagglomeration was applied. Multiple 'nano-blasts' of C₃H₆N₆O₆ embedded to engineered nano-reactors broke apart the agglomerates due to the highly energetic impacts of the blast waves. Extremely rapid detonation (10^-8 sec/gram) forms gaseous products with a temperature of 2000 to 5000 ºC compressed into a volume equaling the initial volume of each explosive RDX particle. The instantaneous power of each explosion (i.e., the expansion of compressed gases) is 500 MW/gram. The impacts of the blast waves lead to the fragmentation of the surrounding matter. The impulse evolution of a large volume of gaseous products dissipates the heat of the process and limits the temperature increase, thus reducing the possibility of premature local partial sintering among the primary particles. The solid-solubility is enhanced by the extremely high local temperature generated during the 'nano-explosions'. We produced CGO powder with an average primary crystallite size of 11 nm, an aggregate size distribution of 33 ~ 70 nm , with uniform morphology and precise stoichiometry.

Spark plasma sintering study was conducted to receive full dense nanostructured ceramic with uniform grains. The properties of SPS processing as far as ionic conductivity of produced ceramic will be described.

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