JPS5512650A - Production method of indirectly-heated cathode - Google Patents
Production method of indirectly-heated cathodeInfo
- Publication number
- JPS5512650A JPS5512650A JP8532278A JP8532278A JPS5512650A JP S5512650 A JPS5512650 A JP S5512650A JP 8532278 A JP8532278 A JP 8532278A JP 8532278 A JP8532278 A JP 8532278A JP S5512650 A JPS5512650 A JP S5512650A
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- alumina
- ceramic layer
- alumina ceramic
- rhenium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To obtain a rigid and stable cathode having the temperature rise of 1W2 sec, by coating alumina on the face of facial heater then after heating it to produce an alumina ceramic layer jointing a cathode material to it.
CONSTITUTION: Rhenium-molybdenum or rhenium-tungsten alloy board is pressed to form a heater 1 having a circular plane section 11 and two feet 12, 13. Then alumina powder mixed with proper adhesives is coated on the face of said plane section 11 to the depth of 0.05W0.1mm and sintered under hydrogen environment of 1650°C to obtain alumina ceramic layer 2 (insulation layer). Then an adhesives containing alumina is coated on the alumina ceramic layer 2 and the nickel plate employed as cathode is adhered then heated and hardened to achieve heat-resistant jointing state. Then electro-radioactive material 4 is provided on the cathode 3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8532278A JPS5512650A (en) | 1978-07-12 | 1978-07-12 | Production method of indirectly-heated cathode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8532278A JPS5512650A (en) | 1978-07-12 | 1978-07-12 | Production method of indirectly-heated cathode |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5512650A true JPS5512650A (en) | 1980-01-29 |
Family
ID=13855375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8532278A Pending JPS5512650A (en) | 1978-07-12 | 1978-07-12 | Production method of indirectly-heated cathode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5512650A (en) |
-
1978
- 1978-07-12 JP JP8532278A patent/JPS5512650A/en active Pending
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