High-density nanoparticle ceramic bodies: A study of heating rates in the sinterization of Gadolinium-doped Ceria
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Resumo
An investigation on the sinterization of Gd:CeO2 (Ce 0.85Gd0.15O1.9-δ ceramic system) 3-10 nm nanoparticles in pressed bodies was done. The heating rate was taken as a key parameter and two competing sinterization processes were identified, associated with different diffusional mechanisms. Using heating rates of 113 C min -1, a high-final density (98 % of the theoretical) was obtained by superposing the two aforementioned mechanisms, resulting in a homogeneous microstructure at lower temperatures. © 2012 Akadémiai Kiadó, Budapest, Hungary.
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Fuel cell materials, Nanocrystalline materials, Powder consolidation, Sintering, Sol-gel, Ceramic bodies, Ceramic systems, Diffusional mechanisms, Gadolinium doped ceria, Homogeneous microstructure, Key parameters, Powder consolidations, Cerium compounds, Heating rate, Nanoparticles, Sol-gels, Gadolinium
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Inglês
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Journal of Thermal Analysis and Calorimetry, v. 111, n. 2, p. 1351-1355, 2013.
