| 液相施主及高钙添加对PTC材料性能的影响 |
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| 引用本文： | 孙宏全,陈亿裕,毛翠萍. 液相施主及高钙添加对PTC材料性能的影响[J]. 电子元件与材料, 2005, 24(4): 48-51 |
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| 作者姓名： | 孙宏全 陈亿裕 毛翠萍 |
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| 作者单位： | 华南理工大学电子材料科学与工程系,广东,广州,510640;华南理工大学电子材料科学与工程系,广东,广州,510640;华南理工大学电子材料科学与工程系,广东,广州,510640 |
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| 摘 要： | 采用液相施主掺杂和高钙添加相结合的方法,制得性能优良,适合程控电话交换机防雷击、防过流用的耐强电限流器件的PTC材料。在液相施主Y(NO3)3的添加量(摩尔分数)为0.4%,CaCO3添加量(摩尔分数)为15%时,得到了室温电阻率为140?·cm,居里点tC为74℃,阻温系数α为13.9%℃–1,升阻比lg(ρmax/ρmin)为7.2,耐压强度Vb≥260V/mm的PTC材料。
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| 关 键 词： | 电子技术 PTC材料 耐强电 液相施主掺杂 高钙添加 |
| 文章编号： | 1001-2028(2005)04-0048-04 |
Effect of Liquid-phase Donor Doping and High Calcium Adding on Performance of PTC Material |
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| SUN Hong-quan,CHEN Yi-yu,MAO Cui-ping. Effect of Liquid-phase Donor Doping and High Calcium Adding on Performance of PTC Material[J]. Electronic Components & Materials, 2005, 24(4): 48-51 |
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| Authors: | SUN Hong-quan CHEN Yi-yu MAO Cui-ping |
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| Abstract: | High-performance PTC current-limiting devices for SPC telephone exchanger could be acquired by doping proper liquid-phase donor and adding high calcium content. PTC materials, of which room temperature resistivity 140 ?·cm, Curie point 74℃, resistance-temperature coefficient 13.9%℃–1, lg(ρmax/ρmin)7.2, Vb≥260 V/ mm, have been obtained with the addition of 0.35 mol% Y(NO3)3 and 15 mol% CaCO3. |
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| Keywords: | electronic technology PTC material high resisting electrical strength liquid-phase donor doping high calcium adding |
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