Synthesis of (1–x) CaTiO3–xNdAlO3 Ceramic Powder via Ethylenediaminetetraacetic Acid Precursor
(1–x)CaTiO3–xNdAlO3 (CTNA) microwave dielectric ceramics have a high Q value and a low temperature coefficient of resonant frequency ( τf ). CTNA ceramic powder was synthesized using a polymeric precursor derived from a mixed-metal ethylenediaminetetraacetic acid (EDTA) / ethylene glycol solution. The precursors and derived oxide powders were characterized by thermogravimetric analysis and X-ray diffraction. When x = 0.3, CTNA was synthesized at 900°C for 3 h in air. Compared with that prepared by the solid-state reaction method in literatures, the CTNA ( x = 0.3 ) ceramics with better microwave properties could be obtained at lower calcination and sintering temperatures by EDTA chelating method.
Wei Pan and Jianghong Gong
G. H. Huang et al., "Synthesis of (1–x) CaTiO3–xNdAlO3 Ceramic Powder via Ethylenediaminetetraacetic Acid Precursor", Key Engineering Materials, Vols. 368-372, pp. 147-149, 2008