Study of the 11Li2O-3Nb2O5-12TiO2 Microwave Dielectric Ceramic Composite*
Abstract: The 11Li2O-3Nb2O5-12TiO2(LNT) microwave dielectric ceramic composites have been prepared by the solid-state reaction method. The effects of the sintering temperature on phase structure and properties were investigated by XRD, SEM and the measured dielectric properties. The calcined powders at 850˚C and the dense ceramics were mainly composed of Li2TiO3ss and M-phase solid solution. No other phase structure could be found in the dense LNT ceramics. And the compositions of two phases in the dense ceramics are different from those in the calcined powders. The LNT ceramics could be sintered densely at 1100˚C with density of about3.76g/cm3 and good microwave dielectric properties of er = 49, Q × f = 9842 GHz and tf = −22 ppm/˚C.
文章引用: 李 丹 , 曾 群 , 张娜娜 (2013) 11Li2O-3Nb2O5-12TiO2复合微波介质陶瓷的研究*。 材料科学， 3， 95-98. doi: 10.12677/MS.2013.32018
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