热敏陶瓷材料Mn2.25-xNi0.75CoxO4微结构与电学性能研究
Alternative Titlemicrostructure and electrical properties of mn_(2.25-x)ni_(0.750co_xo_4 thermistor ceramics
彭昌文; 张惠敏; 常爱民; 黄霞; 姚金城
2011
Source Publication无机材料学报
ISSN1000-324X
Volume26Issue:10Pages:1037-1042
Abstract

采用氧化物固相法制备Mn_(2.25-x)Ni_(0.750Co_xO_4(0.8≤x≤1.2)系列NTC(negative temperature coefficient)热敏电阻粉体材料.利用激光粒度分析、XRD、SEM和电性能测试等手段,表征了煅烧材料的颗粒尺寸、陶瓷体的物相、形貌以及陶 瓷材料的电学特性与Co含量的关系.结果表明:在1130~1230℃烧结温度范围内,该材料体系的B值和电阻率rho25℃随Co含量的变化范围分别为 3487~4455 K和1998~203617Omega·cm,B值和电阻率随Co含量的增加先增大后减小.该材料系列电阻率和B值调整范围较大,是一种具有实际应用价值 的NTC热敏电阻。

Other Abstract

A series of composite of the negative temperature coefficient(NTC)powders of Mn_(2.25-x)Ni_(0.750Co_xO_4(0.8≤ x≤1.2)materials were prepared via solid-state method.The particle size of calcined powders,ceramics phase structure,morphology and electrical properties were characterized by laser particle size analyzer,XRD,SEM and electrical measurements,respectively.The results show that when the Mn_(2.25-x)Ni_(0.750Co_xO_4 ceramics sintered at 1130~1230℃,their characteristic parameters B25/50 value are found to be in the range of 3487K to 4455K and their electrical resistivitiesrho25℃are 1998-·cm to 203617Omega·cm.The B25/50 value andrho25℃first increases and then decreases as the Co content increases.This means that electrical resistivity and B value of Mn_(2.25-x)Ni_(0.750Co_xO_4 ceramics could be adjusted to the desired values and this ternary system can be considered as the advanced semi-conducting materials for NTC thermistor applications.

KeywordNtc热敏陶瓷 尖晶石 电性能
Subject AreaEngineering (Provided By Thomson Reuters)
Indexed BySCI ; CSCD
CSCD IDCSCD:4322351
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/2606
Collection新疆维吾尔自治区电子信息材料与器件重点实验室
材料物理与化学研究室
Affiliation中国科学院新疆理化技术研究所;新疆电子信息材料与器件重点实验室;中国科学院研究生院
Recommended Citation
GB/T 7714
彭昌文,张惠敏,常爱民,等. 热敏陶瓷材料Mn2.25-xNi0.75CoxO4微结构与电学性能研究[J]. 无机材料学报,2011,26(10):1037-1042.
APA 彭昌文,张惠敏,常爱民,黄霞,&姚金城.(2011).热敏陶瓷材料Mn2.25-xNi0.75CoxO4微结构与电学性能研究.无机材料学报,26(10),1037-1042.
MLA 彭昌文,et al."热敏陶瓷材料Mn2.25-xNi0.75CoxO4微结构与电学性能研究".无机材料学报 26.10(2011):1037-1042.
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