Electrical Breakdown Strength of Alumina at High Temperatures

M. YOSHIMURA, H. K. BOWEN

研究成果: Article同行評審

41 引文 斯高帕斯(Scopus)

摘要

The dc electrical strength of sapphire and poly crystalline alumina was studied up to 1400°C. The electrical strength was essentially identical for both materials. It was > 106 V/cm at room temperature and decreased gradually with temperature up to 900°C (2.6×105 V/ cm), then dropped rapidly to 2×104 V/cm at 1400°C for a sample thickness of ∼ 100 μm. The electrical strength decreased with the sample thickness. It was inversely proportional to the thickness for samples thicker than ∼ 600 μm at 1200°C. The breakdown behavior was explained on the basis of a thermal breakdown model.

原文English
頁(從 - 到)404-410
頁數7
期刊Journal of the American Ceramic Society
64
發行號7
DOIs
出版狀態Published - 1981 七月

All Science Journal Classification (ASJC) codes

  • 陶瓷和複合材料
  • 材料化學

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