CAJ | 학술논문

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。
이용효-응효법제비적근청석분체위원료,취병희산납위분산제、취을희순위점결제,취을이순위증소제,통과수기류연성형제비료근청석도자생배。연구료류연생배적소결성능급미관형모。결과표명,1000℃하소결체석출정상전부위α-근청석,치밀성교호。첩층생배재1000℃하소결후층간계면소실,치밀성호。첩편재1GHz하적개전상수ε=4.56,개전손모tanδ=0.0032,기본만족저개편식전감원기건대개질재료적요구。
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 ofα-cordierite crystal phase and has higher density.The density of laminated sheet sintered at 1000℃ was also on the high side,the inter-face between layers diminished.And the dielectric constantεand dielectric losses tanδof cordierite laminated sheet sintered at 1000℃ were 4.56 and 0.0032 at 1GHz,respectively.Dielectric performance can meet the re-quirements of chip inductance components.