摘要
选取工业纯原料，采用熔融法制备了镁铝硅钛铈系微晶玻璃，研究其在不同晶化温度下的显微结构及微波介电性能。结果表明：随着晶化温度的提高，微晶玻璃的岛先增大后减小，在1000℃时达到最大值；同时微晶玻璃中晶粒逐渐长大，残余玻璃相减少，tanδ降低；当晶化温度超过1200℃时，晶粒粗化，tanδ略有升高。所制微晶玻璃在微波频率（8GHz）下，其εT在8．55～14．61可调，tanδ小于8×10^-4，是一种性能优良的微波介质材料。
MgO-Al2O3-SiO2-TiO2-CeO2 system glass-ceramics were prepared with industrial-grade raw materials using melting method, and the microstmctures and microwave dielectric properties of the glass-ceramics obtained at different crystallization temperatures were investigated. The results show that with the increasing of the crystallization temperatures, the relative permittivity （εr） of the glass-ceramics increases firstly, which gets its maximum value at 1 000 ℃, then decreases; the growth of the crystals in the glass-ceramics leads to the reduction of residual glass phase and dielectric loss （tang）; however, at 1 200℃ above, tang increases slightly due to the coarse of the crystals. The obtained glass-ceramics with εrof 8.55-14.61 and tang less than 8×10-4 at microwave frequency of 8 GHz can be used as promising microwave dielectric materials.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2009年第8期17-19,共3页
Electronic Components And Materials
基金
江苏省中青年学科带头人"青蓝工程"资助项目
关键词
无机非金属材料
镁铝硅钛铈系
微晶玻璃
晶化温度
微波介质材料
non-metallic inorganic material
MgO-Al2O3-SiO2-TiO2-CeO2 system
glass-ceramic
crystallizationtemperature
microwave dielectric material
