Synthesis of YCrO3 ceramics through a field-assisted sintering technique

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Abstract

The YCrO3 negative temperature coefficient (NTC) ceramics have been successfully fabricated through a field-assisted sintering technique with a low sintering temperature and a short sintering period. The orthorhombic perovskite YCrO3 powder synthesized from a Pechini method was formed at a temperature range of 780–800 °C through a decomposition of YCrO4. The as-sintered YCrO3 ceramics had a relative density of 97.6 %. The values of ρ 25, ρ 600, B 25/600 and activation energy of the YCrO3 NTC thermistor were 1.21 × 106 Ω cm, 7.26 × 102 Ω cm, 3,358 K, 0.293 eV, respectively. Such ceramics could be used as the potential candidates for NTC thermistors in a wide temperature range from 25 to 600 °C.

Keywords

Negative Temperature Coefficient Sintered Ceramic Pechini Method Negative Temperature Coefficient Thermistor Orthorhombic Perovskite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Notes

Acknowledgments

This study was supported by the National Natural Science Foundation of China (Grant No.51102276), and the National High Technology Research and Development Program of China (Grant No. 2012AA091102). The author, Bo Zhang, would also like to acknowledge her scholarship from the China Scholarship Council.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Xinjiang Key Laboratory of Electronic Information Materials and Devices, Key Laboratory of Functional Materials and Devices for Special Environments of CASXinjiang Technical Institute of Physics and Chemistry of CASUrumqiChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Kazuo Inamori School of Engineering, New York State College of CeramicsAlfred UniversityAlfredUSA

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