Fuel effect on solution combustion synthesis of Co(Cr,Al) 2 O 4 pigments | Zendy

J. Gilabert | Zendy; M.D. Palacios | Zendy; V. Sanz | Zendy; S. Mestre | Zendy

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Fuel effect on solution combustion synthesis of Co(Cr,Al) 2 O 4 pigments

Author(s) -

J. Gilabert,

M.D. Palacios,

V. Sanz,

S. Mestre

Publication year - 2017

Publication title -

boletín de la sociedad española de cerámica y vidrio

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.462

H-Index - 24

eISSN - 2173-0431

pISSN - 0366-3175

DOI - 10.1016/j.bsecv.2017.03.003

Subject(s) - pigment , mineralogy , combustion , materials science , composition (language) , chemistry , crystallite , spinel , nuclear chemistry , metallurgy , organic chemistry , art , literature

The fuel effect on the synthesis of a ceramic pigment with a composition CoCr2−2ΨAl2ΨO4 (0 ≤ Ψ ≤ 1) by means of solution combustion synthesis process (SCS) has been studied. Three different fuels were selected to carry out the synthesis (urea, glycine and hexamethylentetramine (HMT)). Highly foamy pigments with very low density were obtained. Fd-3m spinel-type structure was obtained in all the experiments. Nevertheless, crystallinity and crystallite size of the spinels show significant differences with composition and fuel. The use of glycine along with the chromium-richest composition favours ion rearrangement to obtain the most ordered structure. Lattice parameter does not seem to be affected by fuel, although it evolves with Ψ according to Vegard's law.Colouring power in a transparent glaze shows important variations with composition. On the other hand, fuel effect presents a rather low influence since practically the same shades are obtained. However, it exerts certain effect on luminosity (L*)

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