Synthesis and characterization of spinel pigment CaFe2O4 obtained by the polymeric precursor method

The CaFe2O4 composition was studied, in order to analyze its physical and chemical behavior, verifying its stability under industrial conditions, when applied as pigments. The characterization was accomplished using thermal analysis, X-ray diffraction (XRD), nitrogen adsorption, scanning electronic microscopy (SEM) and diffuse reflectance. It observed successions exothermics reactions, adequate in events of thermal decomposition of the organic material, reach your stability in 700 °C. The material became completely crystalline at 800 °C. Between 700 and 1100 °C, the color was stabilized, showing an absorption band in the region of 650 to 750 nm, characteristic of the red color. [Copyright &y& Elsevier]