GB914509A - Matrix type cathode - Google Patents
Matrix type cathodeInfo
- Publication number
- GB914509A GB914509A GB4267/59A GB426759A GB914509A GB 914509 A GB914509 A GB 914509A GB 4267/59 A GB4267/59 A GB 4267/59A GB 426759 A GB426759 A GB 426759A GB 914509 A GB914509 A GB 914509A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- cathode
- mixture
- backing member
- zirconium
- 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
- 239000011159 matrix material Substances 0.000 title 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 6
- 239000000203 mixture Substances 0.000 abstract 5
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- QSGNKXDSTRDWKA-UHFFFAOYSA-N zirconium dihydride Chemical compound [ZrH2] QSGNKXDSTRDWKA-UHFFFAOYSA-N 0.000 abstract 2
- 229910000568 zirconium hydride Inorganic materials 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- 230000032683 aging Effects 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
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- BCFYIZNSWUFRFT-UHFFFAOYSA-H calcium;strontium;barium(2+);tricarbonate Chemical compound [Ca+2].[Sr+2].[Ba+2].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O BCFYIZNSWUFRFT-UHFFFAOYSA-H 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 239000010406 cathode material Substances 0.000 abstract 1
- 238000000975 co-precipitation Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 238000010943 off-gassing Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229910052712 strontium Inorganic materials 0.000 abstract 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12007—Component of composite having metal continuous phase interengaged with nonmetal continuous phase
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12042—Porous component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
- Y10T428/12139—Nonmetal particles in particulate component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12944—Ni-base component
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
914,509. Cathode materials &c. processing. EITEL-McCULLOUGH Inc. Feb. 6, 1959 [March 12, 1958], No. 4267/59. Drawings to Specification. Class 39 (1). A cathode comprises a backing member in the form of a solid plate of nickel including zirconium with or without magnesium and/or silicon, or an emissive coating comprising a mixture of 20 to 40 parts by weight of bariumstrontium-calcium carbonate with 80 to 60 parts of nickel powder and 0.1 to 2 parts of zirconium hydride or zirconium metal. The backing member may also contain traces of Cu, Fe and Mu. The preferred emissive coating comprises a mixture of 70 parts by weight of vacuum-melt nickel powder, 30 parts of carbonates prepared by coprecipitation in a weight ratio of 6 parts barium to 3 parts strontium and 1 part calcium, and 1 part of zirconium hydride. The emissive mixture is distributed uniformly over the surface of the backing member, to which a layer of nickel particles may have been sintered to provide a rough surface, in the amount of at least 100 mgs/sq. cm. The coating is then subjected to a pressure of 20 to 35 tons/sq. inch to compress the mixture to a thickness of 0.016 to 0.024 inches and a density of 40 to 50% of a solid of the same composition. The cathode, which may be in the form of a concave disc, is then mounted in an electron tube, e.g. a velocitymodulated beam tube, which is baked out at 400‹ C. and then the cathode is heated to 600‹ C. to complete the outgassing thereof. The cathode is formed by increasing its temperature to 1050‹ C. and finally activated in an ageing step in which it is heated to 925‹ C. for 20 hours. Such cathodes may be successfully operated for more than 5000 hours at 825‹C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US721039A US3031740A (en) | 1958-03-12 | 1958-03-12 | Matrix type cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB914509A true GB914509A (en) | 1963-01-02 |
Family
ID=24896273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4267/59A Expired GB914509A (en) | 1958-03-12 | 1959-02-06 | Matrix type cathode |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3031740A (en) |
| FR (1) | FR1221240A (en) |
| GB (1) | GB914509A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3257703A (en) * | 1961-09-29 | 1966-06-28 | Texas Instruments Inc | Composite electrode materials, articles made therefrom and methods of making the same |
| US3224906A (en) * | 1963-06-18 | 1965-12-21 | Deibel Charles | Acid-resistant material for use in protecting battery terminals and the like |
| US3879830A (en) * | 1971-06-30 | 1975-04-29 | Gte Sylvania Inc | Cathode for electron discharge device having highly adherent emissive coating of nickel and nickel coated carbonates |
| TW375753B (en) * | 1995-12-27 | 1999-12-01 | Mitsubishi Electric Corp | Electron tube cathode |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2899299A (en) * | 1959-08-11 | Method of manufacturing sintered | ||
| US2147447A (en) * | 1936-09-21 | 1939-02-14 | Siemens Ag | Glow cathode |
| NL59317C (en) * | 1941-10-15 | 1946-06-15 | ||
| US2543439A (en) * | 1945-05-02 | 1951-02-27 | Edward A Coomes | Method of manufacturing coated elements for electron tubes |
| GB710648A (en) * | 1951-04-12 | 1954-06-16 | Standard Telephones Cables Ltd | Improvements in or relating to thermionic cathodes |
-
1958
- 1958-03-12 US US721039A patent/US3031740A/en not_active Expired - Lifetime
-
1959
- 1959-02-06 GB GB4267/59A patent/GB914509A/en not_active Expired
- 1959-03-05 FR FR788490A patent/FR1221240A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1221240A (en) | 1960-05-31 |
| US3031740A (en) | 1962-05-01 |
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