Ca/Si摩尔比对CBS系微晶玻璃结构与性能的影响  

Effect of Ca/Si mol ratio on microstructure and properties of CaO-B_2O_3-SiO_2 glass ceramics

作　　者：韦鹏飞[1] 郝凌云[1] 杨晓莉[1] 叶原丰[1] 冯志强[1] 

机构地区：[1]金陵科技学院材料工程学院,江苏南京210069

出　　处：《电子元件与材料》2014年第2期65-67,共3页Electronic Components And Materials

基　　金：金陵科技学院博士科研启动基金资助项目(No.JIT-B-201211)

摘　　要：采用高温熔融法,制备了四种不同Ca/Si摩尔比的CaO-B2O3-SiO2微晶玻璃。考察Ca/Si摩尔比对该体系微晶玻璃结构和性能的影响。结果表明:Ca/Si摩尔比的上升,有利于CaSiO3晶相的生成,试样的致密度及相对介电常数下降,介电损耗明显增大。Ca/Si摩尔比为0.6时,875℃烧结试样的体积密度为2.46 g/cm3,显气孔率为0.27%,9.8GHz的相对介电常数和介电损耗分别为6.12和0.0019。The CaO-B203-SiO2 glass ceramics with different Ca/Si mol ratios were prepared by high-temperature melting method. The effects of Ca/Si mol ratio on microstructure and properties of CaO-B203-SiO2 system were discussed. The results show that with the increase of Ca/Si mol ratio, there are more CaSiO3 crystal to precipitate, and the bulk density and the relative dielectric constant decrease, while the dielectric loss increases obviously. When Ca/Si mol ratio is 0.6, the glass ceramic with a bulk density of 2.46 g/cm3, a porosity rate of 0.27%, a er value of 6.12 and a tanδ value of 0.001 9 （measured at 9.8 GHz） is obtained sintered at 875 ℃ for 15 min.

关 键 词：微晶玻璃 钙硼硅 CA Si摩尔比 微观结构 密度 介电性能 

分 类 号：TB303[一般工业技术—材料科学与工程]