摘要
在低温烧结的CaO-MgO-SiO2(CMS)陶瓷中,引入粒径为50～100nm的Ca0.7Mg0.3SiO3纳米粉体,研究了纳米粉体对陶瓷烧结行为和介电性能的影响。研究发现:添加质量分数为5%的纳米粉体能有效促进陶瓷的烧结,拓宽其烧结温度范围,提高其微波介电性能。在890℃烧结后得到良好的介电性能:εr=9.31,Q·f=22574GHz。通过对电镀前后性能的对比发现,添加适量纳米粉体,可消除陶瓷中的大气孔,有效防止电镀过程中电镀液渗入陶瓷体,从而大大改善电镀后陶瓷的介电性能。
Dielectric properties and sintering process of low temperature sintered CaO-MgO-SiO2 microwave dielectric ceramics doped with Ca0.7Mg0.3SiO3 nanopowder were investigated. It is effective to promote the sintering process, broaden the sintering temperature and improve the dielectric properties of CaO-MgO-SiO2 ceramics doped with nanopowder. When the addition of nanopowder is 5 % （mass fraction） , the CaO-MgO-SiO2 ceramics sintered at 890℃ has excellent microwave dielectric properties： εr= 9.31, Q · f= 22 574 GHz. Due to the pores in ceramics being eliminated, the dielectric properties of CaO-MgO-SiO2 ceramics after electroplating are improved by doping with appropriate nanopowder.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2006年第9期37-39,42,共4页
Electronic Components And Materials
基金
国家863计划资助项目(2003AA302760)
浙江省重点科技计划资助项目(2003C3019)
关键词
无机非金属材料
微波介质陶瓷
纳米粉体
介电性能
电镀
inorganic non-metallic materials
microwave dielectric ceramic
nanopowder
dielectric properties
electroplating
