一種高可靠長壽命陰極
A HIGHLY RELIABLE AND LONG LIFE CATHODE
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摘要: 正 空間技術(shù)的發(fā)展向電子器件提出了高可靠、長壽命的要求,這又使電子器件向陰極提出了同樣的要求。在國外,解決的辦法是,使用以鋯鎳或鎢鋯鎳作基金屬的氧化物陰極,再加上高水平的造管工藝等措施來保證電子器件的高可靠和長壽命。我們根據(jù)當前國內(nèi)
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關(guān)鍵詞:
Abstract: In this paper, a highly reliable and long life cathode is described. The emission cur-rent density of the cathode is higher than 400 mA/cm2 at 730℃, and has a value of 50-70 mA/cm2 at 550℃. The life of the cathode under different conditions is over than 60000 hrs. The result of oxygen poisoning test is also given. -
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