Al_2O_3掺杂对MnCoNi系NTC热敏电阻材料性能的影响
Effects of Al_2O_3 doping on the properties of MnCoNi system NTC thermistor materials
查看参考文献13篇
文摘
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采用传统固相法制备了Co_(1.5)–xMn_(1.2_Ni_(0.3)AlxO_4(x=0,0.02,0.04,0.06)NTC热敏电阻材料。借助XRD、SEM和几种电性能测试手段,研究了Al_2O_3掺杂对MnCoNi热敏电阻材料相结构及电性能的影响。结果表明:随着Al2O3掺杂量的增加,MnCoNi热敏电阻材料的晶体结构不变,晶粒减小,电阻率和材料常数B值由339.07Ω·cm、3 489.07 K分别增加到3 723.89Ω·cm、3 956.80 K,电学稳定性由1.65%提高至0.17%。 |
其他语种文摘
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Co_(1.5–x)Mn_(1.2)Ni_(0.3)Al_xO_4(x=0,0.02,0.04,0.06)NTC thermistor materials were prepared by the traditional solid-state reaction method.The effects of Al_2O_3 doping on the microstructure and electric properties of prepared materials were studied through XRD,SEM and several instruments for electrical properties characterization.The results indicate that Al_2O_3 doping shows little effect on the crystal structure of prepared materials.However,with increasing Al_2O_3 content,the grain size of the MnCoNi thermistor materials decreases,while the resistivity,material constant B value and electrical stability increase from 339.07Ω·cm,3 489.07 K and 1.65%to 3 723.89Ω·cm,3 956.80 K and 0.17%,respectively. |
来源
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电子元件与材料
,2011,30(7):25-28 【扩展库】
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关键词
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Al2O3掺杂
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NTC热敏电阻
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尖晶石
;
MnCoNi系
;
电稳定性
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地址
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中国科学院新疆理化技术研究所, 新疆, 乌鲁木齐, 830011
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1001-2028 |
学科
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化学工业 |
基金
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新疆自然科学基金
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文献收藏号
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CSCD:4249810
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