文献类型：期刊文献

中文题名：ZnO-B_2O_3-SiO_2微晶玻璃的制备及其低温共烧特性研究

英文题名：Study on the Co-firable Property and Preparation of the ZnO-B_2O_3-SiO_2 Glass-ceramics

作者：樊嘉杰[1];王中俭[1];胡一晨[1];郭娜[1];王雯[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2009

卷号：37

期号：2

起止页码：18

中文期刊名：玻璃与搪瓷

外文期刊名：Glass & Enamel

语种：中文

中文关键词：微波介质陶瓷;低温共烧;溶胶-凝胶;液相烧结

外文关键词：microwave dielectric ceramics ; LTCC ; sol - gel ; liquid phase sintering

摘要：为了满足微波电路小型化、集成化、低成本的发展要求,出现了低温烧结微波介质陶瓷。目前LTCC(LowTemperature Co-fired Ceramics)技术已被广泛地应用于无线通讯系统中。通过溶胶-凝胶法制备了ZnO-B2O3-SiO2低熔玻璃,经过800℃热处理微晶化后添加到0.3BaZrO3-0.7(Mg0.7Zn0.3)2SiO4复合陶瓷相中,以达到低温烧结的目的。讨论了pH值、温度对凝胶化过程的影响,并通过FTIR和XRD分析了凝胶、玻璃和微晶之间的转变及其结构的变化。研究发现:控制溶胶pH值为0.5,凝胶温度为60℃以及热处理温度为800℃,可以得到稳定的ZnO-B2O3-SiO2微晶玻璃粉末;将其掺入到0.3BaZrO3-0.7(Mg0.7Zn0.3)2SiO4复合陶瓷相中可以将烧结温度降至900℃。低熔微晶玻璃对陶瓷相的润湿性能良好,在较低温度下产生的液相有利于促进微晶玻璃+陶瓷体系的烧结。
Low temperature co -fired microwave dielectric ceramics have been developed to use for microwave device so as to miniaturize modem wireless communication systems. To decrease the firing temperature, low melting ZnO - B2O3 - SiO2 glass powders were prepared by sol - gel process and heat treated at 800℃, and then added into 0.3BaZrO3-0.7（Mg0.7Zn0.3）2SIO4 ceramic composites. The effects of pH Value and temperature on gelation process were investigated. The phase transition and structure of gel, glass and glass- ceramics were analyzed by means of Forrier transformation infrared and X- ray diffraction technology. The experimental results indicate that stable ZnO -B203 -SiO2 glass - ceramics powders can be obtained by controlling pH of sol at 0.5, gel temperature at 60~C and heat treatment temperature at 800~C. Sintering temperature of the ceramic composites is able to be reduced down to 900℃ by adding the glass - ceramics powder. Low sintering mechanism is explained as the excellent wettability of the liquid phase formed by the above low melting glass ceramics at relative low temperature on the ceramic composite phase.