Applied Sciences | Open Access | DOI: https://doi.org/10.37547/tajas/Volume07Issue08-11

Synthesis and color characteristics of willemite-structured ceramic pigments using microsilica

Kadyrova Zulayho Raimovna , Doctor of Chemical Sciences, Prof. Institute of General and Inorganic Chemistry of Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
Usmanov Khikmatulla Lutpullayevich , Doctor of Sciences, Prof. Institute of General and Inorganic Chemistry of Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
Eminov Azizjon Аshrapovich , Doctor of Sciences, chief researcher, Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
Tairov Saidamir Saidmalikovich , PhD, senior researcher, Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
Tairov Saidamir Saidmalikovich , PhD, senior researcher, Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
Kodirova Umida Aslonovna , PhD, senior researcher, Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan

Abstract

The development of ceramic pigments with a willemite structure through the utilization of industrial by-products, such as microsilica, represents a promising and sustainable research direction. In this study, pigments in the ZnO–CoO–SiO2 system were synthesized using microsilica as a silica source. The influence of raw material composition and firing conditions on phase formation, crystal structure, and color characteristics of the pigments was investigated. X-ray diffraction (XRD) analysis confirmed the formation of willemite-based solid solutions. The colorimetric properties were evaluated in the CIE Lab* system, demonstrating that the obtained pigments exhibit stable blue and violet hues with high thermal and chemical resistance. The results highlight the potential of microsilica recycling for the production of cost-effective, environmentally friendly ceramic pigments suitable for glaze and ceramic applications.

Keywords

Ceramic pigment, blue color, willemite

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Kadyrova Zulayho Raimovna, Usmanov Khikmatulla Lutpullayevich, Eminov Azizjon Аshrapovich, Tairov Saidamir Saidmalikovich, Tairov Saidamir Saidmalikovich, & Kodirova Umida Aslonovna. (2025). Synthesis and color characteristics of willemite-structured ceramic pigments using microsilica. The American Journal of Applied Sciences, 7(8), 154–158. https://doi.org/10.37547/tajas/Volume07Issue08-11