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专利名称：Cathode material of electron beam device
and preparation method thereof
发明人：Jong-Seo Choi,Yoon-Chang Kim,Kyu-Nam
Joo,Nikolay Osaulenko,VladislavShutovsky,Oleg Kultashev
申请号：US098061申请日：20010626公开号：US06511632B1公开日：20030128
专利附图：
摘要：A cathode material of an electron beam device comprising 0.5 to 9.0% by weightof a rare-earth metal of the cerium group, 0.5 to 15.0% by weight of tungsten and/orrhenium, 0.5 to 10% by weight of hafnium and the balance of iridium is provided. Since the
cathode material has excellent plasticity, it is easy to manufacture small-size emitters.Also, since the density of the electron emission of the cathode material is high and theworking temperature is low, a long lifetime can be ensured. Also, the cathode material isuseful as a cathode material of an electron beam device.
申请人：SAMSUNG SDI CO., LTD.
代理机构：Leydig, Voit & Mayer, Ltd.
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