堇青石水基流延坯片烧结性能研究  

Sintering properties of cordierite tapes by aqueous tape-casting

作　　者：侯朝霞[1] 牛厂磊[1] 王少洪[1] 周丹[1] 刘晓东[1] 随春华 王美涵[1] 胡小丹[1] 

机构地区：[1]沈阳大学机械工程学院辽宁省新型功能材料与化学工艺重点实验室,辽宁沈阳110044 [2]吉化集团吉林市锦江油化厂大项目办公室,吉林吉林132022

出　　处：《功能材料》2013年第21期3113-3116,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50702035);国家重点基础研究发展计划(973计划)子课题资助项目(2011CB612209);国家科技支撑计划资助项目(2011BAJ06B02);教育部新世纪优秀人才支持计划资助项目(NCET-10-0904);辽宁省高校优秀人才支持计划资助项目(LJQ2011125)

摘　　要：以溶胶-凝胶法制备的堇青石粉体为原料,聚丙烯酸钠为分散剂、聚乙烯醇为粘结剂,聚乙二醇为增塑剂,通过水基流延成型制备了堇青石陶瓷生坯。研究了流延生坯的烧结性能及微观形貌。结果表明,1000℃下烧结体析出晶相全部为α-堇青石,致密性较好。叠层生坯在1000℃下烧结后层间界面消失,致密性好。叠片在1GHz下的介电常数ε=4.56,介电损耗tanδ=0.0032,基本满足低介片式电感元器件对介质材料的要求。Cordierite powders prepared by sol-gel method were used as raw materials. Sodium polyacrylate, poly-ving akohol and polyethylene glycol were acted as dispersant, adhesive and plasticizer, respectively. The cordi-erite green tapes were obtained by aqueous tape-casting process. Sintering properties and microstructure were investigated. It turned out that cordierite sheets sintered at 1000℃ was composed of α-cordierite crystal phase and has higher density. The density of laminated sheet sintered at 100℃was also on the high side, the inter-face between layers diminished. And the dielectric constant e and dielectric losses tanδ of cordierite laminated sheet sintered at 1000~C were 4.56 and 0. 0032 at 1GHz, respectively. Dielectric performance can meet the re- quirements of chip inductance components.

关 键 词：堇青石 烧结 水基流延 坯片 

分 类 号：TM174.75[电气工程—电工理论与新技术]