| 水基流延法制备片式PTC陶瓷 |
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| 引用本文： | 周东祥,陈文仿,龚树萍,程书芬,刘欢.水基流延法制备片式PTC陶瓷[J].电子元件与材料,2007,26(5):4-6. |
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| 作者姓名： | 周东祥 陈文仿 龚树萍 程书芬 刘欢 |
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| 作者单位： | 华中科技大学电子科学与技术系,湖北,武汉,430074 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以PVA和PAA乳液为粘合剂,用水基流延法制备了BaTiO3基片式PTC陶瓷基片。研究了粘合剂、固相含量等对浆料黏度及流变行为的影响,同时对流延基片的干燥工艺、烧成曲线等也进行了研究。结果表明,将流延干燥后的基片,在1 320℃空气中烧结30 min,所得PTC样品的升阻比大于6个数量级,温度系数大于16%/℃,能够满足叠层PTC器件的制备要求。
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| 关 键 词： | 电子技术 水基流延 PTC陶瓷 叠层 片式 |
| 文章编号： | 1001-2028（2007）05-0004-03 |
| 修稿时间： | 2006-12-26 |
Fabrication of chip-type PTC ceramics through the aqueous tape-casting method |
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| ZHOU Dong-xiang,CHEN Wen-fang,GONG Shu-ping,CHENG Shu-fen,LIU Huan.Fabrication of chip-type PTC ceramics through the aqueous tape-casting method[J].Electronic Components & Materials,2007,26(5):4-6. |
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| Authors: | ZHOU Dong-xiang CHEN Wen-fang GONG Shu-ping CHENG Shu-fen LIU Huan |
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| Abstract: | An environmentally-friendly and nonhazardous method based on aqueous tape-casting technique was introduced for the fabrication of BaTiO3-based chip-type positive temperature coefficient(PTC) ceramics.PVA and PAA latex were used as binders.Effects of the binders and solid loading on the viscosity and rheological properties of the slurry were investigated.The drying and sintering parameters of the tapes were also discussed.After dried and then sintered at 1 320 ℃ in air for 30 min,the PTC sample exhibits resistance jump ratio above 106 and the temperature cofficient is above 16 %/℃,which is suitable for the fabrication of multiayered PTC ceramics. |
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| Keywords: | electron technology aqueous tape-casting PTC ceramics multilayer chip-type |
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