文献类型：期刊文献

英文题名：LaMnO3-Ni0.75Mn2.25O4 Supported Bilayer NTC Thermistors

作者：Zhao, Yong-Li[1];Zhao, Chun-Hua[2];Huang, Juan[1];Zhao, Bing[2]

机构：[1]Shanghai Univ Engn Sci, Coll Elect & Elect Engn, Shanghai 201620, Peoples R China;[2]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：97

期号：4

起止页码：1016

外文期刊名：JOURNAL OF THE AMERICAN CERAMIC SOCIETY

收录：;EI(收录号：20141517562388);WOS:【SCI-EXPANDED(收录号:WOS:000333550500004)】；

基金：This work is supported by National Natural Science Foundation of China (Grant no.: 51102094), the Fundamental Research Funds for the Central Universities, Research Fund for the Doctoral Program of Higher Education of China (Grant no.: 20110074120013), Shanghai Leading Academic Discipline Project (B502), Shanghai Key Laboratory Project (08DZ2230500), and Foundation for University Young teachers of Shanghai.

语种：英文

外文关键词：Thermistors - Nickel compounds - Failure (mechanical)

摘要：A bilayer concept was proposed to adjust the electrical properties of NTC thermistors. The conventional NTC material Ni0.75Mn2.25O4 was chosen as the sensitive layer, and high conductive LaMnO3-Ni0.75Mn2.25O4 composite was chosen as the support layer. The bilayer NTC thermistors were successfully fabricated by classical uniaxial pressing method. After cosintering at 1235 degrees C for 4h, the two layers adhered well to each other without any cracking or delamination. The resistance decreased linearly with the decrease in the thickness of Ni0.75Mn2.25O4 layer, and the B values varied between 3868 and 3901K. After annealing at 150 degrees C in air for 500h, the resistance shifts at 25 degrees C were less than 1%, which mean that the bilayer NTC thermistors had high stability.