物理学报2011，Vol.60Issue(12)：557-562,6.
Al2O3-Y2O3-ZrO2三相复合陶瓷的介电谱研究
Dielectric spectroscopy of Al2O3-Y2O3-ZrO2 ternary composite ceramics
摘要
Abstract
Al2O3-Y2O3-ZrO2 ternary composite ceramics are synthesized via the traditional solid state reaction method and sintered at 1400—1500 ℃.The phase structure,the microstructure and the electrical properties of these samples are characterized by X-ray diffraction （XRD）,scanning electron microscope （SEM） and dielectric spectra.There are not any other impurity phases in this ternary system supported by XRD patterns,and additions of Y2O3 and ZrO2 into Al2O3 make contributions to the lower calcining heat.SEM indicates that the grain sizes of these samples are about 200—500 nm.Furthermore,the densities are improved and the grain boundaries are clearer for the samples sintered at higher temperatures.Relaxation peaks are observed in the dielectric loss plots and the relaxation is of non-Debye type according to Cole-Cole complex impedance spectrum.关键词
Al2O3-Y2O3-ZrO2三相陶瓷/介电弛豫/阻抗谱/热导率Key words
Al2O3-Y2O3-ZrO2 ternary ceramics/dielectric relaxation/impedance spectroscopy/thermal conductivity分类
数理科学引用本文复制引用
陈东阁,唐新桂,贾振华,伍君博,熊惠芳..Al2O3-Y2O3-ZrO2三相复合陶瓷的介电谱研究[J].物理学报,2011,60(12):557-562,6.基金项目
国家自然科学基金 （）
广东省科技计划 （）
广州市科技计划（批准号：2010Y1-C221）资助的课题 （）
