压制工艺对Ca-Ba-Mg-Al-B-Si-O玻璃/Al_2O_3材料烧结性能的影响  

Effect of pressing process on sintering properties of Ca-Ba-Mg-Al-B-Si-O glass/Al_2O_3 material

作　　者：刘明[1] 许晓颖[1] LIU Ming;XU Xiaoying(School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, Henan Province, China)

机构地区：[1]洛阳理工学院材料科学与工程学院,河南洛阳471023

出　　处：《电子元件与材料》2018年第3期29-33,共5页Electronic Components And Materials

基　　金：国家自然科学基金项目(U1304520);河南省科技攻关计划项目(162102210280);河南省高等学校重点科研计划项目(15A430035);全国建筑材料行业科技创新计划项目(2015-M2-1)

摘　　要：以Ca-Ba-Mg-Al-B-Si-O系玻璃粉与Al_2O_3为原料,流延成型生瓷带,采用低温烧结法制备了玻璃/陶瓷系介电陶瓷材料。研究了压制工艺与烧成温度对复合材料烧结性能以及介电性能的影响。结果表明,随着成型压力增加与保压时间延长,生坯体积密度增加,相应烧结体的体积密度增加,烧成收缩率减小。玻璃/Al_2O_3生瓷带的微观形貌结构致密,20 MPa/10 min成型玻璃/Al_2O_3材料于850℃烧结具有较好的性能:体积密度为3.10 g·cm^(–3),10 MHz下的介电常数为7.97,介电损耗为0.000 86。因此该体系材料比较适合用作低温共烧陶瓷材料。Green tapes were prepared with the method of tape casting process using Ca-Ba-Mg-Al-B-Si-O glass and Al2O3powder as the raw materials,and pressed into samples.Then the prepared samples were calcined at low temperatures.The effects of pressing process and sintering temperature on the sintering characteristics and dielectric properties were investigated.The results show that bulk density of green bodies and sintered samples both increase with increasing forming pressure and holding time.Accordingly,their sintered shrinkage rate decreases.SEM photographs present a compact microstructure.The glass/Al2O3material pressed at20MPa/10min and sintered at850℃exhibits good and stable comprehensive properties:bulk density of3.10g·cm–3,dielectric constant of7.97,and dielectric loss of0.00086at10MHz,which suggests that Ca-Ba-Mg-Al-B-Si-O glass/Al2O3material is a good candidate for the multilayer low temperature co-fired ceramics.

关 键 词：Ca-Ba-Mg-Al-B-Si-O玻璃 AL2O3 生坯 成型压力 保压时间 烧结性能 

分 类 号：TM28[一般工业技术—材料科学与工程]