Author(s)

Leidy Johana Jaramillo Nieves¹, Oscar Jaime Restrepo Baena², Jorge Iván Tobón²

¹Federal University of San Carlos, San Carlos, Brazil.
²Materials and Minerals Department, Universidad Nacional de Colombia, Medellín, Colombia.

In this research ceramic pigments have been synthesized with crystalline spinel structure and chromium based with a stoichiometry ACr₂O₄. A was an element with +2 valence metal, in this case, metals were zinc and iron, these pigments have been synthesized by non-conventional methods like the co-precipitation assisted by ultrasound and high milling energy. Pigments were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), spectrophotometry, and colorimetric CIELab method. Results showed that it was possible to obtain a crystallin desired structure at temperatures below 900°C by non-conventional methods. These results showed the advantages of ceramic pigments obtained by alternative routes, because it was possible to have a better control over stoichiometry and colorimetric structure properties. Furthermore, they were obtained at temperatures lower than those used by the traditional ceramic route.

Pigments, Synthesis, Ceramics, Chemical Reactions, Color

Nieves, L. , Baena, O. and Tobón, J. (2014) Synthesis of Ceramic Pigments ACr₂O₄ Using the Non-Conventional Method of Co-Precipitation Assisted by Ultrasound and High Energy Milling. Open Journal of Inorganic Non-metallic Materials, 4, 54-63. doi: 10.4236/ojinm.2014.44008.