Synthesis of Ceramic Pigment Based on Crystal Structure of Wollastonite

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. Different studies have shown the feasibility of using industrial by-products to obtain pigments. Many of these waste products have calcium carbonate and nickel oxides in their composition. This study investigates the synthesis of ceramic pigment with the structure of wollastonite - CaSiO₃, with the use of nickel as chromophore ion. In order to evaluate the effect of adding nickel to the formation of crystalline phases X-ray diffraction was used. 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 wollastonite combined with nickel acts as pigment and that its presence may interfere with the performance of new pigments depending on the nickel content and synthesis temperature.

• Periodical: Materials Science Forum (Volume 869)
• Pages: 170-175
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.869.170
• Online since: August 2016
• Authors: Marilena Valadares Folgueras, G.B. Albuquerque, S.R. Prim
• Keywords: Ceramic Pigments, Wollastonite

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