Nonstoichiometric reactions producing ceramic pigments

The reactions synthesizing diopside ceramic pigments using natural minerals—talc and wollastonite—have been investigated. For the initial components taken in a nonstoichiometric ratio the yield of the main reaction product — diopside — increases in two of the three reactions studied, while in the th...

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Bibliographic Details
Published in:Glass and ceramics 2011-07, Vol.68 (3-4), p.76-79
Main Authors: Sedel’nikova, M. B., Pogrebenkov, V. M., Liseenko, N. V., Gorbatenko, V. V.
Format: Article
Language:English
Subjects:
Calcium magnesium silicates
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Color
Colour
Composites
Crystal structure
Crystals
Deviation
Diopside
Glass
Materials Science
Natural Materials
Oxides
Pigments
Stoichiometry
Structure
Wollastonite
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Summary:The reactions synthesizing diopside ceramic pigments using natural minerals—talc and wollastonite—have been investigated. For the initial components taken in a nonstoichiometric ratio the yield of the main reaction product — diopside — increases in two of the three reactions studied, while in the third reaction a change of the stoichiometry of the input components results in a lower content of diopside. It is found that for a small deviation from stoichiometry the dominant crystal structure of the pigment changes, which in turn fundamentally changes the color of the pigment.
ISSN:0361-7610
1573-8515
DOI:10.1007/s10717-011-9325-9