GB309578A - Improvements in or relating to wehnelt cathodes - Google Patents
Improvements in or relating to wehnelt cathodesInfo
- Publication number
- GB309578A GB309578A GB8714/29A GB871429A GB309578A GB 309578 A GB309578 A GB 309578A GB 8714/29 A GB8714/29 A GB 8714/29A GB 871429 A GB871429 A GB 871429A GB 309578 A GB309578 A GB 309578A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compound
- beryllium
- barium
- cathodes
- nickel
- 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.)
- Expired
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 2
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 2
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 abstract 1
- 229920000084 Gum arabic Polymers 0.000 abstract 1
- 241000978776 Senegalia senegal Species 0.000 abstract 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 1
- 235000010489 acacia gum Nutrition 0.000 abstract 1
- 239000000205 acacia gum Substances 0.000 abstract 1
- 239000011149 active material Substances 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- 150000001553 barium compounds Chemical class 0.000 abstract 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 abstract 1
- ZBUQRSWEONVBES-UHFFFAOYSA-L beryllium carbonate Chemical compound [Be+2].[O-]C([O-])=O ZBUQRSWEONVBES-UHFFFAOYSA-L 0.000 abstract 1
- 229910000023 beryllium carbonate Inorganic materials 0.000 abstract 1
- 150000001573 beryllium compounds Chemical class 0.000 abstract 1
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052726 zirconium Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/14—Solid thermionic cathodes characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Fats And Perfumes (AREA)
Abstract
309,578. Naamlooze Vennootschap Philips'. Gloeilampenfabrieken. April 13, 1928, [Convention date]. Vacuum tubes.-Cathodes are provided, in addition to the known active material, such as barium or a barium compound, with a beryllium compound, preferably beryllium oxide, with which may be mixed a compound of zirconium, preferably zirconium oxide. In an example, a nickel-wire core or a tungsten core wound with nickel wire is coated with a suspension of barium carbonate, beryllium carbonate, zirconium oxide, in the molecular proportions 10:2:8, and, if desired, an agglutinant, for example, gum arabic, the whole being heated, preferably to 1000C in vacuo.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL309578X | 1928-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB309578A true GB309578A (en) | 1930-03-06 |
Family
ID=19783587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8714/29A Expired GB309578A (en) | 1928-04-13 | 1929-03-18 | Improvements in or relating to wehnelt cathodes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1821359A (en) |
| BE (1) | BE359097A (en) |
| FR (1) | FR671657A (en) |
| GB (1) | GB309578A (en) |
| NL (1) | NL23762C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE482916A (en) * | 1947-06-05 | |||
| US2552654A (en) * | 1948-08-30 | 1951-05-15 | Rca Corp | Heat-resistant cathode coatings |
| US2663816A (en) * | 1949-09-28 | 1953-12-22 | Sylvania Electric Prod | Electric discharge lamp |
| NL168358C (en) * | 1952-03-24 | Siemens Ag | NUCLEAR REACTOR, COOLED BY PRESSURE WATER AND EQUIPPED WITH A Yoke FOR CARRYING A NUMBER OF INSTRUMENTATION PIPES. | |
| NL269971A (en) * | 1960-10-18 |
-
0
- NL NL23762D patent/NL23762C/xx active
- BE BE359097D patent/BE359097A/xx unknown
-
1929
- 1929-03-18 FR FR671657D patent/FR671657A/en not_active Expired
- 1929-03-18 GB GB8714/29A patent/GB309578A/en not_active Expired
- 1929-04-04 US US352597A patent/US1821359A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1821359A (en) | 1931-09-01 |
| BE359097A (en) | |
| NL23762C (en) | |
| FR671657A (en) | 1929-12-16 |
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