不同Ca/Si比对钙硼硅三元微晶玻璃的性能影响  

Effect of Ca/Si ratio on the microstructures and properties of CaO-B_2O_3-SiO_2 glass-ceramics

作　　者：邵辉[1] 周洪庆[1] 朱海奎[1] 戴斌[1] 沈晓冬[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《功能材料》2011年第12期2153-2156,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2007AA03Z455)

摘　　要：采用XRD、SEM、DSC等测试分析手段研究了Ca/Si比变化对CBS微晶玻璃晶相、微观结构和电性能的影响。结果表明在固定B2O3的含量为17%(摩尔分数)时,发现当m(Ca/Si比)<1.08时,CBS微晶玻璃的烧结温度>900℃,当m>1.08时,CBS微晶玻璃的烧结温度900℃。当m达到1.767时,CBS微晶玻璃无法烧结;随着CaO含量的增加,Ca2SiO4晶体逐渐增加,硅灰石相逐渐减少,石英相逐渐增加;在1MHz下,C2、C5和C7试样烧结后电损耗均<2×10-3。Influence of Ca/Si on the crystallization,microstructure and dielectric properties of CaO-B2O3-SiO2 glass was studied by using XRD,DSC and SEM.The results indicate that when m（Ca/Si ratio）1.08,calcium borosilicate glass sintering temperature higher than 900℃,but it is m1.08,CBS department of the sintering temperature of glass is far lower at 900℃.When m reaches 1.767,CBS can not be sintered;with the increase of CaO content,Ca2SiO4 crystals gradually increased,leading to the gradual reduction of wollastonite phase,resulting in gradual increase in quartz;the samples were C2,C5,C7 dielectric loss sintered 2×10-3 at 1MHz.

关 键 词：钙硼硅微晶玻璃 钙硅比 烧结性能 低温共烧陶瓷 

分 类 号：TB34[一般工业技术—材料科学与工程]