V-ZrSiO4 ceramic pigments synthesis from m-ZrO2 and different amorphous silica sources

TANIŞAN B.

Journal of the Australian Ceramic Society, vol.57, no.5, pp.1351-1357, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 5
  • Publication Date: 2021
  • Doi Number: 10.1007/s41779-021-00591-4
  • Journal Name: Journal of the Australian Ceramic Society
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.1351-1357
  • Keywords: V-zircon pigment, Amorphous silica, Rice husk, Powders-solid-state reaction, Colour, COLOR PROPERTIES, ZIRCON PIGMENTS, SOLID-SOLUTIONS, BLUE, LOCALIZATION, PRASEODYMIUM
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

© 2021, Australian Ceramic Society.In this study, vanadium-doped zircon (V-ZrSiO4) blue ceramic pigments were prepared by the conventional ceramic route from a mixture of monoclinic zirconia and amorphous silicas with NH4VO3 as colouring V source as well as NaF as mineralizer. Both rice husk ash-derived silica and precipitated silica were used as the silica source in order to assess suitability of the rice husk ash-derived silica in place of the precipitated silica. Effect of calcination temperatures on the crystalline phase formation was followed by X-ray diffraction, while morphologies of the synthesized pigments were characterized by scanning electron microscopy. Furthermore, colour properties of the prepared pigments were evaluated by using an UV-Vis spectrophotometer. While zircon phase formation started at temperatures as low as 750 °C, calcination temperature of around 950 °C was required to get strong blue colour formation for both the silica sources with similar colour intensities. Therefore, it is proposed that rice husk derived silicas can be used as a cheap alternative silica source to precipitated silicas.