Solution Combustion Synthesis of (Co,Fe)Cr2O4 pigments
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http://dx.doi.org/10.1016/j.jeurceramsoc.2011.11.044 |
Metadatos
Título
Solution Combustion Synthesis of (Co,Fe)Cr2O4 pigmentsFecha de publicación
2012Editor
ElsevierISSN
0955-2219Cita bibliográfica
Journal of the European Ceramic Society (Jul. 2012) vol. 32, no. 9, p. 1995–1999Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0955221911006364Palabras clave / Materias
Resumen
The synthesis of mixed cobalt–iron chromites, Fe1−ΨCoΨCr2O4 (0 ≤ Ψ ≤ 1), has been studied by Solution Combustion Synthesis using urea as fuel. Characterization by XRD and SEM showed that crystallinity, cell parameters, ... [+]
The synthesis of mixed cobalt–iron chromites, Fe1−ΨCoΨCr2O4 (0 ≤ Ψ ≤ 1), has been studied by Solution Combustion Synthesis using urea as fuel. Characterization by XRD and SEM showed that crystallinity, cell parameters, crystallite size and grain size depend on Ψ. The higher is the cobalt content of the initial composition the greater are these four characteristics, but evolution of cell parameters, crystallite size and grain size is not regular, since the variations are more pronounced for the spinels with high iron content. Apparently, the method causes some deficiency in the oxygen content of the spinels and a slight enrichment in chromium with respect to the theoretical composition, but does not alter the proportions of iron and cobalt.
All synthesized chromites showed a high tinting strength in ceramic glazes without any additional annealing step. [-]
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