Electrical conductivity and thermal expansion of spinels at elevated temperatures

被引：426

作者：

Petric, Anthony ^{[1
]}

Ling, Hang ^{[1
]}

机构：

[1] McMaster Univ, Hamilton, ON L8S 4L7, Canada

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 05期

关键词：

D O I：

10.1111/j.1551-2916.2007.01522.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Binary oxide spinels composed of Mg, Al, Cr, Mn, Fe, Co, Ni, Cu, and Zn were synthesized. Electrical conductivity was measured in air at 500 degrees-800 degrees C. Thermal expansion was measured from room temperature to 1000 degrees C. Ferrite spinels have thermal expansion coefficients of 11-12 ppm/K, compared with 7-9 ppm/K for other spinels except Cu-Mn and Co-Mn which show anomalous behavior. The highest electrical conductivity among transition metal spinels was found for MnCo2O4 (60 S/cm at 800 degrees C) and Cu1.3Mn1.7O4 (225 S/cm at 750 degrees C).

引用

页码：1515 / 1520

页数：6

共 39 条

[1] THE STABILITIES OF COO.AL2O3,COO.CR2O3, AND 2COO.SIO2 [J].