| Mo-La2O3阴极丝的AES深度剖析 |
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| 引用本文： | 聂祚仁,周美玲,王金淑,张久兴,左铁镛. Mo-La2O3阴极丝的AES深度剖析[J]. 稀有金属, 1999, 0(2) |
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| 作者姓名： | 聂祚仁 周美玲 王金淑 张久兴 左铁镛 |
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| 作者单位： | 北京工业大学材料科学与工程学院,北京100022 |
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| 摘 要： | 激活后发射良好的Mo La2 O3 阴极表层含有大量镧 ,原子浓度比约为 (稍大于 )10 % ;发射衰减的阴极表层中镧含量减少 ,未激活的原始阴极丝表层中镧更少。对不同状态阴极中氧含量及其变化的比较 ,以及碳、钼峰分析认为 :发射良好阴极中镧的活性程度较大 ,即超额镧的存在是影响阴极工作性能的主要因素 ;衰减后阴极中镧的总量虽不小 ,但镧的活性显著降低是阴极发射不好的主要原因
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| 关 键 词： | Mo-La_2O_3 AES 热电子发射 阴极 |
AES Deepness Analyses on Mo-La2O3 Filaments |
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| Nie Zuoren,Zhou Meiling,Wang Jinshu,Zhang Jiuxing,Zuo Tieyong. AES Deepness Analyses on Mo-La2O3 Filaments[J]. Chinese Journal of Rare Metals, 1999, 0(2) |
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| Authors: | Nie Zuoren Zhou Meiling Wang Jinshu Zhang Jiuxing Zuo Tieyong |
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| Abstract: | There are lots of lanthanum on the surface of activated Mo La 2O 3 filament. The atomic weight percentage of lanthanum is about 10%. Lanthanum on the surface decreases with emitting attenuation. The analyses on oxygen and other elements indicate that active lanthanum on cathodes contribute to emission mainly. The lower activation of lanthanum attenuates emission even if its content keeps larger. |
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| Keywords: | Mo-La_2O_3 AES Emission Cathode |
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