陈国华,徐华蕊,江民红,颜东亮,周昌荣,成钧,刘心宇

• 1:桂林电子科技大学材料科学与工程学院
• 2:广西信息材料重点实验室

摘要(Abstract)：

为探索玻璃组成对CaO-Al2O3-SiO2系玻璃烧结、晶化和性能的影响,采用烧结法制备了不同组成的钙长石基微晶玻璃。通过差热分析(DTA)、X射线衍射(XRD)、扫描电镜(SEM)和性能测试研究玻璃组成和性能之间的关系。结果表明:随CaO和SiO2含量比值增加,玻璃转变温度和析晶放热峰温度逐渐降低,且析晶放热峰变得尖锐。增加CaO和SiO2比降低了玻璃的析晶活化能和烧结温度,但增加了样品的介电常数、介电损耗和热膨胀系数。析晶活化能E和析晶转变速率k都能适于表征CaO/SiO2比对玻璃析晶性能的影响。所制备的微晶玻璃具有低烧结温度(≤1000℃)、适中介电常数(≤7.5)、低介电损耗(≤0.05%)和低热膨胀系数(≤4.3×10-6/℃),有望用于低温共烧陶瓷基板材料。

关键词(KeyWords)： 氧化钙和二氧化硅比;钙长石;微晶玻璃;晶化动力学;烧结;性能

Abstract:

Keywords:

基金项目(Foundation): 广西自然科学基金(0339066);; 广西信息材料重点实验室基金(桂科能0710908-01-Z)

作者(Author): 陈国华,徐华蕊,江民红,颜东亮,周昌荣,成钧,刘心宇

DOI: 10.13289/j.issn.1009-6264.2010.05.001

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