发明名称 |
MANUFACTURE OF OXIDE CATHODE |
摘要 |
<p>PURPOSE:To maintain the electron radiation performance for a long time by forming the oxide layer to the substrate metal surface through heating in an atmosphere which oxidizes W or Mo before the decomposing process of the carbonate in the exhaustion process of the vacuum tube.</p> |
申请公布号 |
JPS5427351(A) |
申请公布日期 |
1979.03.01 |
申请号 |
JP19770092531 |
申请日期 |
1977.08.03 |
申请人 |
HITACHI LTD |
发明人 |
KUMADA SEIJI;SAITOU SHIYUNJI;MISUMI AKIRA |
分类号 |
H01J9/04;H01J1/14;H01J1/26 |
主分类号 |
H01J9/04 |
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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