摘要
以CaO-B2O3-SiO2(CBS)玻璃粉体、Al2O3陶瓷粉体和Li2CO3助熔剂为原料,通过流延成型法制备了CBS/Al2O3玻璃-陶瓷复合材料流延片。结果表明,Li2CO3通过与CBS、Al2O3、B2O3反应生成低熔点的Li4B2O5和LiAlO2液相,降低了CBS/Al2O3复合材料的烧结温度,在850℃烧结时的体积密度为2.63g/cm3;具有良好的介电性能:介电常数为7.24,介电损耗为1.57×10-3;流延片通过与高热导率的Ag共烧,获得优异的热传导性能,当通孔占有率及间距为3.88%和1.00mm时,热导率为15.16 W/(m·K),已经达到AlN/玻璃基板的热传导性能。
CBS/Al2O3 glass-ceramic composites green tapes were prepared by using CaO-B2O3-SiO2 （CBS） glass, A12Oa powders and Li2CO3 powders. Results showed that Li2COa could react with CBS and A1203 to form Li4 B2O5 and LiA102 in low-melting phase, which would promote sintering process of CBS/Al2O3 composites and re- duced the sintering temperature to 850 % with a density of 2.63 g/cm3 and a dielectric constant of 7.24, dielectric loss of 1.57× 10 3. The exceptional thermal conductivity could be attained 15.16 W/（m K）, when the hole share and width was 3.88% and 1.00 mm by co-firing with high-thermal-conductivity silver, which outweighed that of AlN/glass substrate.
出处
《压电与声光》
CAS
CSCD
北大核心
2014年第6期958-962,共5页
Piezoelectrics & Acoustooptics
基金
浙江省重点科技创新团队基金资助项目(2010R50016)
浙江省工量刃具检测与深加工技术研究重点实验室开放基金资助项目(ZD201309)
