Chemistry Department, Faculty of Science, Benha University, Benha City, Egypt.
Spectrochim Acta A Mol Biomol Spectrosc. 2009 Oct 15;74(3):665-72. doi: 10.1016/j.saa.2009.07.024. Epub 2009 Aug 8.
New nano-blue ceramic pigments of Co(x)Mg(1-x)Al(2)O(4) (0< or =x< or =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 Lab* parameter measurement techniques were used. The results revealed that the nano-particle size of pigments were obtained in the range 30-38 nm as well as the varying colors and particle size as a result of different calcinations temperatures within the range of 500-1200 degrees C for 2h.
已采用共沉淀-燃烧法，以尿素为燃料，在空气氛围中于 500°C 的开放炉中制备出 Co(x)Mg(1-x)Al(2)O(4)（0< or =x< or =0.1）新型纳米蓝色陶瓷颜料。根据热重分析/差热分析/微分热重分析、X 射线衍射（XRD）和透射电子显微镜（TEM）分析，对颜料的结构进行了分析。此外，还采用了电子光谱、红外（IR）和漫反射光谱（DRS）以及 CIE Lab*参数测量技术。结果表明，颜料的纳米颗粒尺寸在 30-38nm 范围内，并且由于在 500-1200°C 范围内煅烧 2 小时，不同的煅烧温度会导致颜色和颗粒尺寸发生变化。
