| Original document(14 pages) Authorized document(5 pages) 中文版 |
This invention provides a method of making Y2O3-Ir cathode used by a electronic gun. Its characteristics are B-type Y2O3-Ir cathode point spiral needed to be winded under spirit lamp, C-type Y2O3-Ir cathode is made by pointwelding iridium filament on the pinpoint of wolfram cross hair, dipping iridium filament in Y2O3 and then sintering. This makes a iridium-heated pointshape Y2O3-Ir cathode. According to this way, it overcomes the backwards of early A-type Y2O3-Ir cathode: bad property of ion bombardment standing and easy droping of Y2O3. This is a new one with high brightness and a long lifetime specially suitable for electronic microscopes. |
Application Number
申请号 |
85108033 |
Application Date
申请日 |
1985.11.01 |
| Title 名称 |
Production of di-iridium trioxide-iridium cathod of electronic gun |
Publication Number
公开号 |
1010871 |
Publication Date
公开日 |
1987.05.06 |
| Approval Pub. Date |
|
Granted Pub. Date |
1989.08.30 |
| International Classification 分类号 |
H01J1/15,H01J3/02,H01J9/04,H01J37/06 |
Applicant(s) Name
申请人 |
Yunnan Univ. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
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| Attorney & Agent 代理人 |
ZHANG JIN |
| More information 更 多 信 息 |
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