摘要
采用高温熔融法,制备了不同硼含量(w(B2O3)为30%～40%)的CaO-B2O3-SiO2系微晶玻璃。考察硼含量对该体系微晶玻璃熔制过程中B2O3挥发率及其性能的影响。结果表明:随w(B2O3)增加B2O3挥发率增大,从4.27%增至6.91%。w(B2O3)为35%时,试样的烧结温度范围较宽,在最佳烧结温度850℃下,体积密度为2.54g/cm3;10MHz下,εr为6.42,tanδ为9×10–4;试样的εr随w(B2O3)变化不大,处于6.2～6.5,w(B2O3)为30%或40%时,tanδ显著增大至10–2量级。
The CaO-B2O3-SiO2 system glass ceramics with different boron contents （w（B2O3） = 30%-40%） were prepared by high-temperature melting method. The effects of boron contents on the B2O3 volatilization rate in the process of glass-melting and the properties of CaO-B2O3-SiO2 system glass ceramics were investigated, The results show that the B2O3 volatilization rate rises with the increase of w（B2O3） in the range of 4.27%-6.91%. The sample with w（B2O3） of 35% sintered at the optimal temperature （850 ℃） has a wider sintering range, a volume density of 2.54 g/cm^3, a relative permittivity of 6,42 and a dielectric loss of 9×10^-4 at 10 MHz. The relative pernaittivities of the samples sintered at the optimal temperature change little with the w（B2O3） and the value of relative permittivity is 6.2 - 6.5. When the w（B2O3） is 30% or 40%, the dielectric loss of sample significantly increases to 10^-2 order of magnitude.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2009年第10期34-36,40,共4页
Electronic Components And Materials
基金
国家"863"计划资助项目(No.2007AA03Z0455)
