| 发明名称 |
Thermionic electron emitters and methods of making them. |
| 摘要 |
<p>A thermionic cathode (Figure 1) comprises a porous matrix of tungsten (4) impregnated with alkaline earth activator.</p><p>A coating (5) 1µm thick is formed on the matrix (4). The coating is of τ phase alloy of molybdenum and osmium.</p><p>Alternative τ phase alloys are disclosed, and various methods of making cathodes are disclosed.</p> |
| 申请公布号 |
EP0053867(A1) |
申请公布日期 |
1982.06.16 |
| 申请号 |
EP19810300963 |
申请日期 |
1981.03.09 |
| 申请人 |
THORN EMI-VARIAN LIMITED |
发明人 |
TUCK, RICHARD ALLAN;SKINNER, HEATHER BARBARA |
| 分类号 |
H01J1/14;(IPC1-7):01J1/14 |
主分类号 |
H01J1/14 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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