Abstract
A procedure for the synthesis of iron zircon pigments by pyrolysis of liquid aerosols is reported. This method produces amorphous spherical particles, with diameters ranging from 20 to 200nm, that can be transformed into reddish iron zircon pigments by heating at lower temperature (1000–1200°C) than that required for pure zircon. The low formation temperature of iron-doped zircon is attributed to the formation of a solid solution between Fe3+cations and tetragonal zirconia, which would favor the diffusion of species required for zircon formation. It was found that the reddish color in the iron zircon pigments is due to α-Fe2O3particles encapsulated in the zircon matrix.
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