Open AccessSynthesis and study of ferri-diopside ceramic pigments
Author(s) -
Tsvetan Dimitrov,
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Rositsa Titorenkova,
A. V. Zaichuk,
Yana Tzvetanova,
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Publication year - 2022
Publication title -
voprosy himii i himičeskoj tehnologii/voprosy himii i himičeskoj tehnologii
Language(s) - English
Resource type - Journals
eISSN - 2413-7987
pISSN - 0321-4095
DOI - 10.32434/0321-4095-2022-140-1-39-46
Subject(s) - diopside , ceramic , wollastonite , materials science , pigment , mineralogy , sintering , analytical chemistry (journal) , periclase , chemical engineering , nuclear chemistry , metallurgy , chemistry , magnesium , chromatography , organic chemistry , raw material , engineering
The article reports the mineralogical composition, structural features and changes in color parameters of iron-containing diopside pigments. The source of SiO2 in these pigments was SiO2nH2O with a particle size in the range of 2–7 m, which is much more reactive than conventionally used quartz sand. A series of ceramic pigments on the basis of stoichiometric diopside in the system CaO–Fe2O3–MgO–SiO2 was synthesized via solid-state high temperature sintering at 1000, 1100 and 12000C. The resulting ceramic pigments were examined by powder X-ray diffraction, infrared spectroscopy, electron microscopy, electron paramagnetic resonance and Mössbauer spectroscopy. The color characteristics were measured using spectrophotometry method. It was found that multiphase ceramic pigments were obtained under the synthesis conditions, which contain diopside, wollastonite, cristobalite, akermanite and periclase in various proportions. The synthesized ceramic pigments are brown and beige in color, depending on the content of Fe2O3 additive, firing temperature and phase composition. The synthesized pigments can be used for staining of ceramic glazes.