含碱金属离子的CaO-B_2O_3-SiO_2系玻璃陶瓷性能研究  

Study on Properties of CaO-B_2O_3-SiO_2 Glass Ceramics Contained Alkali Ions

作　　者：戴斌[1] 朱海奎[1] 周洪庆[1] 吴路燕[1] 岳振星[2] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009 [2]清华大学新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《材料工程》2012年第8期65-68,72,共5页Journal of Materials Engineering

基　　金：江苏省科技支撑计划资助项目(BE2010194);国家863计划资助项目(2007AA03Z455);清华大学新型陶瓷与精细工艺国家重点实验室资助(KF201103)

摘　　要：研究了碱金属氧化物对CaO-B2O3-SiO2(CBS)系玻璃陶瓷的软化析晶温度以及材料的烧结、介电等方面性能的影响。结果表明:对于添加双碱的CBS玻璃,随双碱金属离子半径增大软化温度呈升高趋势,而析晶峰值温度呈降低趋势。Na2O和K2O添加对于改善CBS系玻璃陶瓷烧结性能效果更好,试样内部晶粒分布均匀、结构致密。烧成试样主晶相均为CaSiO3,CaB2O4和石英。试样的介电常数和介电损耗随频率的增加而减小。随着测试温度的升高,试样的介电常数略有增加,而介电损耗呈降低趋势。The influence of the alkali oxide on soften temperature, crystallization temperature, sintering and dielectric properties of CaO-B2O3-SiO2 （CBS） glass ceramic was investigated. The results show that the soften temperatures of the CBS glass contained double alkali oxide additions increase and the crystallization temperatures decrease, as the alkali ionic radius rises. Na20 and K20 additions can improve the sintering properties of CBS samples better and microstructures of the samples are all dense and homogeneous. CBS samples are mainly composed of crystalline phases of CaSiO3, CaBs04 and quartz. The dielectric constant and loss decline with the enhancing frequency. As the measure temperature rises, the dielectric constant increases slightly and the dielectric loss decreases.

关 键 词：碱金属氧化物 CAO-B2O3-SIO2 玻璃陶瓷 介电性能 

分 类 号：TQ174[化学工程—陶瓷工业]