Effects of sintering temperatures on microwave properties of Mg4Nb2O9 ceramics by the solid-state process
Microwave dielectric ceramics of Mg4Nb2O9 were prepared by the solid-state method and their microwave dielectric properties and microstructure were investigated in this study.The sintering ability and microwave dielectric properties of Mg4Nb2O9 ceramics were studied under various sintering temperatures ranging from 1200℃ to 1350℃.As the sintering temperature increased from 1200℃ to 1350℃,the density values,the εr values and the Q·f values increased and saturated at 1350℃.The τf values were ranged from-48.7 to-57.8 ppm/℃.Due to the increased density and appropriate grain growth the Mg4Nb2O9 ceramics sintered at 1350℃ had the excellent microwave dielectric properties of εr=12.3,Q·f =108,000GHz and τf=-55.3ppm/℃.
Magnesium niobate microwave properties solid-state process
Jiang Yi Shan Wang YingZi Chen YaMing Yue YunLong Wu HaiTao
Navy Submarine Academy, Qingdao Shandong 266071, China Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials,University o Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials,University o
国际会议
杭州
英文
178-182
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）