JPS5586039A - Method for manufacturing cathode heating filament of electronic tube - Google Patents
Method for manufacturing cathode heating filament of electronic tubeInfo
- Publication number
- JPS5586039A JPS5586039A JP15881878A JP15881878A JPS5586039A JP S5586039 A JPS5586039 A JP S5586039A JP 15881878 A JP15881878 A JP 15881878A JP 15881878 A JP15881878 A JP 15881878A JP S5586039 A JPS5586039 A JP S5586039A
- Authority
- JP
- Japan
- Prior art keywords
- carbonization treatment
- atmosphere
- seconds
- heated
- hydrogen gas
- 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 make the life long, by specifying the conditions for carbonization treatment and post-carbonization treatment to form a carbonized layer stable against thermal shocks occurring in the carbonized layer during the intermittent operation.
CONSTITUTION: Powders of tungsten, thorium oxide, and of, if necessary, additive elements such as rhenium and iron, are mixed together at desired ratio, and then the mixture is formed into a rod-shape and sintered by means of electric heating in a non-odixizing atmosphere. Then, a after it is subjected to a swaging operation, it is pulled out and further subjected to an elongation operation to produce a filament member with a desired diameter. Thereafter, this filament member is wound into a coil, and heated to a temperature of 1800W2200°C, for 10W120 seconds, in an atmosphere containing 0.2W1.2% by volume hydrocarbon gas with respect to the hydrogen gas flow rate, to effect a carbonization treatment to form a WC layer on the surface. Then, it is heated in a hydrogen gas atmosphere to a temperature 1800W2200°C, for 10W20 seconds to effect a carbonization treatment to vonvert the surface into a layer structure consisting of W2C and W.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15881878A JPS5586039A (en) | 1978-12-22 | 1978-12-22 | Method for manufacturing cathode heating filament of electronic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15881878A JPS5586039A (en) | 1978-12-22 | 1978-12-22 | Method for manufacturing cathode heating filament of electronic tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5586039A true JPS5586039A (en) | 1980-06-28 |
Family
ID=15680028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15881878A Pending JPS5586039A (en) | 1978-12-22 | 1978-12-22 | Method for manufacturing cathode heating filament of electronic tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5586039A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7915827B2 (en) | 2005-09-08 | 2011-03-29 | Tokyo Electron Limited | Magnetron control method, magnetron service life judgment method, microwave generation device, magnetron service life judgment device, processing device, computer program, and storage medium |
-
1978
- 1978-12-22 JP JP15881878A patent/JPS5586039A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7915827B2 (en) | 2005-09-08 | 2011-03-29 | Tokyo Electron Limited | Magnetron control method, magnetron service life judgment method, microwave generation device, magnetron service life judgment device, processing device, computer program, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1814719A (en) | Ductile thorium and method of making the same | |
| US2180988A (en) | Electrode for electric discharge devices | |
| JPS6074401A (en) | Electric fuel igniter | |
| Pidd et al. | Characteristics of UC, ZrC, and (ZrC)(UC) as thermionic emitters | |
| JPS5586039A (en) | Method for manufacturing cathode heating filament of electronic tube | |
| GB962651A (en) | Electrodes for high-pressure electric discharge lamps and process of manufacturing the same | |
| US1732326A (en) | Thorium alloy and method of preparing the same | |
| US2677623A (en) | Process for manufacturing electron emissive material and electrodes | |
| JPS5585601A (en) | Thermal expansion adjusting material and production thereof | |
| DE2744146A1 (en) | ADJUSTABLE HYDROGEN SOURCE WITH GETTING EFFECT FOR INSTALLATION IN ELECTRON TUBES, IN PARTICULAR VIDIKON TUBES, WITH HYDROGEN AS AUXILIARY GAS | |
| GB1036635A (en) | Beryllium copper based alloys and method of producing green compacts and sintered articles therefrom | |
| JPH03133021A (en) | Cathode for electronic tube and its manufacture | |
| US1936334A (en) | Electrode | |
| CA1083336A (en) | Sintered ceramics having controlled density and porosity | |
| US1908759A (en) | Process of carbonizing metals | |
| US1842203A (en) | Electron-emitting device and method of preparation | |
| JPS579803A (en) | Sintering method | |
| JPS5586044A (en) | Cathode frame structure for electron tube | |
| US1297000A (en) | Process of making ductile bodies of refractory materials. | |
| DE1589111C3 (en) | Process for the treatment of an electrode for discharge lamps, the surface of which consists at least in part of thorium oxide | |
| US3448051A (en) | Method of inserting manganese into semiconductors serving to produce electronic semiconductor structural components | |
| DE758242C (en) | Process for the production of glow discharge tubes for the purpose of maintaining a constant voltage | |
| US1323623A (en) | Pbocess of producing dense metal rods of fine powders | |
| JPH0124322B2 (en) | ||
| US1612340A (en) | Luminous tube using rarefied gases |