GB836109A - Improvements relating to thermionic cathodes - Google Patents
Improvements relating to thermionic cathodesInfo
- Publication number
- GB836109A GB836109A GB20633/59A GB2063359A GB836109A GB 836109 A GB836109 A GB 836109A GB 20633/59 A GB20633/59 A GB 20633/59A GB 2063359 A GB2063359 A GB 2063359A GB 836109 A GB836109 A GB 836109A
- Authority
- GB
- United Kingdom
- Prior art keywords
- improvements relating
- tantalum
- june
- thermionic cathodes
- porous layer
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/325—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with layers graded in composition or in physical properties
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
-
- 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
- H01J9/047—Cathodes having impregnated bodies
-
- 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.]
- Y10T428/12063—Nonparticulate metal 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.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12611—Oxide-containing 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
- Y10T428/12778—Alternative base metals from diverse categories
-
- 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
- Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
836,109. Cathode materials and processing. GENERAL ELECTRIC CO. 25 June, 1956 [June 28, 1955], No. 20633/59. Divided out of 831,133. Drawing to Specification. Class 39(1). A thermionic cathode consists of a metal base, a porous layer of metal particles alloyed together and to the base by tantalum, and an emissive coating impregnating and overlying the porous layer. Apart from the tantalum, the other materials and the manner of manufacture are as in Specification 831,133.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US518547A US2996795A (en) | 1955-06-28 | 1955-06-28 | Thermionic cathodes and methods of making |
Publications (1)
Publication Number | Publication Date |
---|---|
GB836109A true GB836109A (en) | 1960-06-01 |
Family
ID=24064419
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20633/59A Expired GB836109A (en) | 1955-06-28 | 1956-06-25 | Improvements relating to thermionic cathodes |
GB19606/56A Expired GB831133A (en) | 1955-06-28 | 1956-06-25 | Improvements relating to thermionic cathodes |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19606/56A Expired GB831133A (en) | 1955-06-28 | 1956-06-25 | Improvements relating to thermionic cathodes |
Country Status (3)
Country | Link |
---|---|
US (1) | US2996795A (en) |
FR (1) | FR1154716A (en) |
GB (2) | GB836109A (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3159461A (en) * | 1958-10-20 | 1964-12-01 | Bell Telephone Labor Inc | Thermionic cathode |
US3153279A (en) * | 1959-05-29 | 1964-10-20 | Horst Corp Of America V D | Heat resistant solid structure |
US3224071A (en) * | 1960-03-14 | 1965-12-21 | Philips Corp | Brazing method for porous bodies |
US3170772A (en) * | 1961-01-05 | 1965-02-23 | Tokyo Shibaura Electric Co | Oxide coated cathodes for electron tubes |
US3238596A (en) * | 1962-10-23 | 1966-03-08 | Sperry Rand Corp | Method of fabricating a matrix cathode |
US3327158A (en) * | 1963-06-26 | 1967-06-20 | Sylvania Electric Prod | Semi-dispenser cathode with overlying emissive coating |
US3328623A (en) * | 1964-03-02 | 1967-06-27 | Sylvania Electric Prod | Surge arrestor having electrodes containing a low resistivity metal |
US3323924A (en) * | 1964-03-27 | 1967-06-06 | Varian Associates | Low dielectric loss metallizing paint composition having a reduced sintering temperature |
US3340026A (en) * | 1964-12-03 | 1967-09-05 | Bendix Corp | Composite article of bonded refractory metal and a ceramic |
US3545944A (en) * | 1965-03-10 | 1970-12-08 | United Aircraft Corp | Composite metal article having an intermediate bonding layer of nickel aluminide |
US3395993A (en) * | 1966-06-22 | 1968-08-06 | Gen Electric | Titanium activated nickel seal and method of forming it |
US3351486A (en) * | 1966-11-23 | 1967-11-07 | Sylvania Electric Prod | Cathodes |
US3641298A (en) * | 1967-07-19 | 1972-02-08 | Mallory & Co Inc P R | Electrically conductive material and electrical contact |
US3620645A (en) * | 1970-05-01 | 1971-11-16 | Getters Spa | Getter device |
JPS5641636A (en) * | 1979-09-12 | 1981-04-18 | Hitachi Ltd | Directly heated type oxide cathode |
US4415835A (en) * | 1981-06-22 | 1983-11-15 | General Electric Company | Electron emissive coatings for electric discharge devices |
US4663559A (en) * | 1982-09-17 | 1987-05-05 | Christensen Alton O | Field emission device |
GB8426319D0 (en) * | 1984-10-18 | 1984-11-21 | Oxford Lasers Ltd | Laser devices |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1075782A (en) * | 1910-10-19 | 1913-10-14 | Goldschmidt Ag Th | Method of raising the alloying qualification of titanium. |
US1221769A (en) * | 1916-10-30 | 1917-04-03 | Cooper Company | Alloy. |
US2103033A (en) * | 1934-08-10 | 1937-12-21 | Gen Electric | Electron emissive electrode |
NL48128C (en) * | 1935-02-23 | |||
US2149657A (en) * | 1936-03-12 | 1939-03-07 | Tungsten Electrodeposit Corp | Thermionic tube |
US2172207A (en) * | 1936-09-19 | 1939-09-05 | Siemens Ag | Glow cathode |
US2179110A (en) * | 1938-08-27 | 1939-11-07 | Rca Corp | Cathode for electron discharge devices |
BE446289A (en) * | 1941-07-03 | |||
US2339392A (en) * | 1942-10-06 | 1944-01-18 | Rca Corp | Cathode |
US2417730A (en) * | 1942-11-30 | 1947-03-18 | Eitel Mccullough Inc | Electron tube and method of making same |
CH249243A (en) * | 1943-01-15 | 1947-06-15 | Philips Nv | Gas or vapor-filled electric discharge tube. |
US2557372A (en) * | 1948-02-21 | 1951-06-19 | Westinghouse Electric Corp | Manufacture of thoria cathodes |
US2775531A (en) * | 1949-05-10 | 1956-12-25 | Univ Ohio State Res Found | Method of coating a metal surface |
GB700606A (en) * | 1949-07-27 | 1953-12-09 | M O Valve Co Ltd | Improvements in or relating to thermionic cathodes and materials therefor |
US2674542A (en) * | 1951-02-06 | 1954-04-06 | Metal Hydrides Inc | Method for producing hard surfaced titanium |
US2719355A (en) * | 1952-10-03 | 1955-10-04 | Rca Corp | Carbonized metal and method of making it |
-
1955
- 1955-06-28 US US518547A patent/US2996795A/en not_active Expired - Lifetime
-
1956
- 1956-06-19 FR FR1154716D patent/FR1154716A/en not_active Expired
- 1956-06-25 GB GB20633/59A patent/GB836109A/en not_active Expired
- 1956-06-25 GB GB19606/56A patent/GB831133A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2996795A (en) | 1961-08-22 |
GB831133A (en) | 1960-03-23 |
FR1154716A (en) | 1958-04-16 |
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