Autores: Ahmed, I.S.|Shama, S.A.|Moustafa, M.M.|Dessouki, H.A.|Ali, A.A.
Fuente: Spectrochim. acta
A 74 (3), 665-672
New nano-blue ceramic pigments of Co(x)Mg(1-x)Al(2)O(4) (0=x=0.1) have been prepared by co-precipitate-combustion as a hybrid method using urea as a fuel at 500 degrees C in open furnace in air atmosphere. The structure of pigment is assigned based on TGA/DTA/DrTGA analyses, X-ray diffraction (XRD) and transmission electron microscopy (TEM). Also, electronic spectra, infrared (IR) and diffuse reflectance spectroscopy (DRS) using CIE L*a*b* parameter measurement techniques were used. The results revealed that the nano-particle size of pigments were obtained in the range 30-38nm as well as the varying colors and particle size as a result of different calcinations temperatures within the range of 500-1200º C for 2h.
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