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Accelerated life test studies of new coated dispenser cathodes

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Journal of Electronics (China)

Abstract

The life of impregnated Ba-W cathodes with a new construction have been evaluated using an accelerated life test at three different temperatures (1170°C,1130°C,1090°C) and constant current density (2A/cm2). According to the relationship of life with operating temperatures, an accelerated equation has been set up. The cathode life at normal operating temperature is deducted based on the accelerated equation. The results show that life of the novel cathode exceeds 190,000 hour at a current density of 2A/cm2.

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Authors and Affiliations

  1. Institute of Electronics, Chinese Academy of Sciences, Beijing, 100080, China

    Zhang Mingchen, Zhang Honglai, Liu Pukun, Su Xiaobao & Li Yutao

Authors
  1. Zhang Mingchen
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  2. Zhang Honglai
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  3. Liu Pukun
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  4. Su Xiaobao
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  5. Li Yutao
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Corresponding author

Correspondence to Zhang Mingchen.

Additional information

Communication author: Zhang Mingchen, born in 1976, female, engineer. Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China.

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Zhang, M., Zhang, H., Liu, P. et al. Accelerated life test studies of new coated dispenser cathodes. J. of Electron.(China) 24, 717–720 (2007). https://doi.org/10.1007/s11767-006-0223-1

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  • DOI: https://doi.org/10.1007/s11767-006-0223-1

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