Ceramics-Silikáty 49 (1) 48-52 (2005)

CONDITIONS OF SYNTHESIS OF Co-Zn-Ti-Cr SPINEL PIGMENT

Ž. Mesíková, M. Trojan, P. Šulcová

The main aim of the research was to propose, verify and analyze the conditions of synthesis of spinel pigment Co_0.46Zn_0.55(Ti_0.064Cr_0.91)₂O₄. The influences of the raw materials and the calcinate temperature on the colour properties of the prepared pigments were monitored. These pigments afford interesting green hue in ceramic glazes and in organic matrix. Mean particle sizes of the prepared pigments decreased after milling from values around 24 µm to 1.5 µm. The analysis of the X-ray diffraction patterns established that all the samples have a single phase cubic spinel structure. Some of the physical-chemical properties that characterize the prepared pigments (specific weight, oil number, CPVC) were also determined.

Keywords: Ceramic pigments, High-temperature pigments, Spinel