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HomeMaterials Science ForumMaterials Science Forum Vols. 745-746Sintering Time Influences on Microstructure and...

Sintering Time Influences on Microstructure and Electrical Properties of Scandium Doped Zinc Oxide Varistor Ceramics

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Abstract:

Sc₂O₃-doped zinc oxide varistor ceramics were prepared by a solid reaction route. The microstructure and the electrical properties was analyzed by scanning electron microscope and X-ray diffraction. Sintering time influences on the microstructure and the electrical properties of Sc₂O₃-doped zinc oxide varistor ceramics are studied. The results show that the electrical properties of Sc₂O₃-doped zinc oxide varistor ceramics sintered at 1000 and sintered for 1 h was better: the voltage gradient was 653 V/mm; the leakage current was 0.18 μA and the nonlinear coefficient was 57.1.

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Periodical:

Materials Science Forum (Volumes 745-746)

Pages:

126-130

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.745-746.126

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Online since:

February 2013

Authors:

Cheng Hua Zhang, Bin Jiang, Ke Zhang, Lei Jiao, Ren Hong Yu, Dong Xu

Keywords:

Dielectric Property, Microstructure, Sintering Time, Varistor Ceramics, Zinc Oxide (ZnO)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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