发明名称 |
Method of manufacturing grid electrodes for electron tubes |
摘要 |
Method of manufacturing grid electrodes wherein a grid sleeve is produced by depositing pyrolytic graphite on a polished mandril of glassy carbon and provided with apertures by means of the laser beam, then the finished grid is provided, by means of hot gas pyrolysis, with a second layer of highly oriented pyrolytic graphite, and thermally and/or mechanically after-treated at 3000 DEG to 3800 DEG K and 10-500 bar.
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申请公布号 |
US4034031(A) |
申请公布日期 |
1977.07.05 |
申请号 |
US19750622999 |
申请日期 |
1975.10.16 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
LERSMACHER, BERNHARD;SEIFERT, HORST;KROL, JOHANNES WILHELMUS ANTONIUS |
分类号 |
H01J9/14;C23C16/26;H01J19/00;(IPC1-7):B29C17/08;B23K9/00 |
主分类号 |
H01J9/14 |
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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