Synthesis of Wurtzite Nano-crystalline ZnO-CoO Pigment by High Energy Milling

Zn0.9co0.1o ceramic pigments were synthesized using simple high energymilling method. zinc and cobalt oxides were used as starting materials.products were investigated using simultaneous thermal analysis andfourier transformation infrared. pigments were characterized using x-raydiffraction, diffuse reflectance and scanning electron microscopy. the resultsshowed the effect of calcination temperature on co solubility and crystallite size.nano-crystalline zn0.9co0.1o pure solid solution synthesized at differenttemperatures consist of 300-500 nm semispherical particles. crystallite size ofzn0.9co0.1o calcinated at 1000؛c was about 100 nm. a broad reflectance bandaround 540 nm (green region) for all powders indicating the appearance of deepgreen pigment was observed. furthermore, elevation of calcination temperaturecaused the increase of color saturation. prog. color colorants coat. 2(2009), 45-51.© institute for color science and technology.