电子元件与材料2017，Vol.36Issue(12)：11-15,5.DOI:10.14106/j.cnki.1001-2028.2017.12.003
溶胶-凝胶法制备SiO2材料及其微波介电性能研究
Microwave dielectric properties of silica materials prepared by sol-gel method
摘要
Abstract
Amorphous silica powders were prepared by sol-gel method, and the effects of solution concentrations on the particle sizes and dispersibilities of powders were studied. The results show that, when themoleratio of H2OtoTEOS is 20:1 and 40:1, the prepared amorphous silica powders have good dispersibility, and their particle sizes were 700nm and 120nm, respectively. Furthermore, the effect of different raw powders on the sintering characteristics and microwave dielectric properties of silica materials were investigated. The results show that, the finer particle size could decrease the sintering temperatures of silica materials, increase relative densities of silica materials, and inhibit the formation of cristobalite.When the sintering temperature is between 1050℃ and 1200℃, the dielectric constants,Q·fvalues andτf values ofsilica materialswere 2.50-3.75, 9850-61272GHz and ±15×10-6/℃, respectively, which is suitable for the production of microwave dielectric substrates.关键词
溶胶-凝胶法/SiO2/烧结/显微组织/相组成/微波介电性能Key words
sol-gel method/silica/sintering/microstructure/phase composition/microwave dielectric properties分类
通用工业技术引用本文复制引用
吕学鹏,胡杰,陈贤,张文宇,郑勇,董作为..溶胶-凝胶法制备SiO2材料及其微波介电性能研究[J].电子元件与材料,2017,36(12):11-15,5.基金项目
国家自然科学基金项目(No. NSFC-51602145) （No. NSFC-51602145）
南京工程学院人才引进基金(No. YKJ201509) （No. YKJ201509）
江苏省先进结构材料与应用技术重点实验室开放基金(No. ASMA201608) （No. ASMA201608）
江苏省大学生实践创新训练项目(No. 201711276074H) （No. 201711276074H）
南京工程学院大学生科技创新项目(No. TP201702001和No. TP201702022) （No. TP201702001和No. TP201702022）
江苏高校优秀科技创新团队 （）
