ABSTRACT
In the ceramic industry, color is of great importance to product development. Parameters such as hue, brightness and color intensity influence the visual appearance of the ceramic surface and its market value. Research on the development of new pigments is ongoing, with focus on cost reduction, environmental suitability and color innovation. These pigments, when dispersed in a solid must be capable of developing color by keeping insoluble and inert at high processing temperatures. This study investigates the synthesis of ceramic pigment with the structure of wollastonite - CaSiO3, with the use of chromium at different ratios as chromophore ion. It was used X-ray diffraction in order to evaluate the effect of adding chromium to the formation of crystalline phases. Particle size analysis was performed by Laser diffraction technique and a colorimetric study was conducted through the analysis of the pigment applied to a commercial enamel, by determining colorimetric parameters L*, a* and b*. The results showed that chromium content and synthesis temperature interferes with the development of silicates and with the performance of new pigments.
Keywords:
Ceramic Pigments; Wollastonite
