Journal of Metals, Materials and Minerals
Publication Date
2021
Abstract
Cobalt-doped forsterite ceramic pigments based on the formula (Mg2-2xCo2x)SiO4 (x = 0, 0.05, 0.1, 0.2) were synthesized using mirror wastes as a flux. Addition of this flux enhanced forsterite phase formation at lower temperature by as much as 200℃. The resulting pigment particles were in a micron range which is suitable for use in a ceramic glaze. The host structure (Mg2SiO4) could accommodate cobalt cations up to 20 at%. Investigation on the chemical distribution revealed that no chemical species from the flux reacted with pigment grains. Optical properties were examined by UV-vis spectroscopy and colorimetry. Technical performance of the obtained pigments was tested in an industrial low-fire glaze. Alteration in color of the matured glazes was clearly observed, suggesting some instability of the pigments. Using a dense pellet form embedded in a molten glaze, an interfacial layer was observed, indicating interaction between the pigment and corrosive glassy glaze occurred. Stability in all raw materials commonly used in medium-fire glazes was further studied in order to determine which compound might cause such instability. The results would allow a design of glaze’s recipe to possess the desired color of the finished products.
First Page
108
Last Page
115
Recommended Citation
Yongvanich, Niti; Lithira, Natchaya; Nuniead, Nitchakarn; and Chauyarsa, Wanchalerm
(2021)
"Synthesis and optical properties of forsterite ceramic pigments using mirror wastes as a flux,"
Journal of Metals, Materials and Minerals: Vol. 31:
No.
4, Article 15.
Available at:
https://digital.car.chula.ac.th/jmmm/vol31/iss4/15