FR2425144A1 - Materiau pour cathode incandescente - Google Patents
Materiau pour cathode incandescenteInfo
- Publication number
- FR2425144A1 FR2425144A1 FR7911113A FR7911113A FR2425144A1 FR 2425144 A1 FR2425144 A1 FR 2425144A1 FR 7911113 A FR7911113 A FR 7911113A FR 7911113 A FR7911113 A FR 7911113A FR 2425144 A1 FR2425144 A1 FR 2425144A1
- Authority
- FR
- France
- Prior art keywords
- important
- substance
- constituting
- metal
- carbide
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/28—Dispenser-type cathodes, e.g. L-cathode
-
- 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
- Y10T428/12021—All metal or with adjacent metals having metal particles having composition or density gradient or differential porosity
-
- 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.]
- Y10T428/12146—Nonmetal particles in a 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
- Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
- Y10T428/12826—Group VIB metal-base component
- Y10T428/12833—Alternative to or next to each other
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Powder Metallurgy (AREA)
Abstract
MATERIAU EN FORME DE FIL OU DE FEUILLE A BASE D'UN METAL A POINT DE FUSION ELEVE ET CONSTITUANT LE SUBSTRAT, D'UNE SUBSTANCE D'ACTIVATION FORMEE D'UN OXYDE ET D'UN AGENT DE REDUCTION CONSTITUE D'UN CARBURE AINSI QU'EVENTUELLEMENT D'UNE ADDITION FAVORISANT LA DIFFUSION ET CONSISTANT EN UN METAL DU GROUPE DU PLATINE. CE MATERIAU EST REALISE SOUS FORME D'UN STRATIFIE DONT LES COUCHES ONT DES COMPOSITIONS ETOU SONT EN CONCENTRATIONS DIFFERENTES DE MANIERE QUE, DANS LES CONDITIONS REGNANT EN SERVICE, LE POUVOIR DE REAPPROVISIONNEMENT DE LA ZONE CENTRALE EN SUBSTANCE D'ACTIVATION SOIT AUSSI IMPORTANT OU PLUS IMPORTANT QUE LA DIMINUTION PROGRESSIVE DE LA CONCENTRATION EN CETTE SUBSTANCE DANS LA COUCHE PERIPHERIQUE. APPLICATION A LA REALISATION DE CATHODES INCANDESCENTES POUVANT ETRE FACONNEES ET DESTINEES AUX TUBES ELECTRONIQUES DE PUISSANCE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH488978 | 1978-05-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2425144A1 true FR2425144A1 (fr) | 1979-11-30 |
FR2425144B1 FR2425144B1 (fr) | 1982-11-12 |
Family
ID=4284300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7911113A Granted FR2425144A1 (fr) | 1978-05-05 | 1979-05-03 | Materiau pour cathode incandescente |
Country Status (8)
Country | Link |
---|---|
US (1) | US4275123A (fr) |
JP (1) | JPS54146950A (fr) |
AT (1) | AT367568B (fr) |
DE (1) | DE2822665A1 (fr) |
FR (1) | FR2425144A1 (fr) |
GB (1) | GB2027263B (fr) |
HU (1) | HU187247B (fr) |
NL (1) | NL7903494A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0143222A1 (fr) * | 1983-09-30 | 1985-06-05 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Cathode thermionique à haut pouvoir emissif pour tube électronique et son procédé de fabrication |
EP0685868A1 (fr) * | 1994-05-31 | 1995-12-06 | Nec Corporation | Dispositif de cathode et tube à électrons comportant ce dispositif |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3148441A1 (de) * | 1981-12-08 | 1983-07-21 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur herstellung einer thermionischen kathode |
US4810926A (en) * | 1987-07-13 | 1989-03-07 | Syracuse University | Impregnated thermionic cathode |
DE4026298A1 (de) * | 1990-08-20 | 1992-02-27 | Siemens Ag | Roentgenroehre mit einem elektronenemitter |
DE4305558A1 (de) * | 1993-02-24 | 1994-08-25 | Asea Brown Boveri | Verfahren zur Herstellung von Drähten, welche insbesondere für Kathoden von Elektronenröhren geeignet sind |
DE4421793A1 (de) * | 1994-06-22 | 1996-01-04 | Siemens Ag | Thermionischer Elektronenemitter für eine Elektronenröhre |
DE4421810C2 (de) * | 1994-06-22 | 1996-08-29 | Siemens Ag | Thermionischer Elektronenemitter und Verfahren zu dessen Herstellung |
GB9413973D0 (en) * | 1994-07-11 | 1994-08-31 | Rank Brimar Ltd | Electrode structure |
ES2128260B1 (es) * | 1997-04-29 | 1999-12-16 | Torres Cabello Dionisio | Visualizador digital para presion de neumaticos. |
US20170330725A1 (en) * | 2016-05-13 | 2017-11-16 | Axcelis Technologies, Inc. | Lanthanated tungsten ion source and beamline components |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1381553A (fr) * | 1962-10-31 | 1964-12-14 | Thomson Houston Comp Francaise | Perfectionnements aux tubes électroniques |
FR1555031A (fr) * | 1967-02-08 | 1969-01-24 | ||
DE2454569A1 (de) * | 1974-10-25 | 1976-04-29 | Bbc Brown Boveri & Cie | Reaktionskathode |
EP0005279A2 (fr) * | 1978-05-05 | 1979-11-14 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Cathode chaude |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE515833A (fr) * | 1951-11-29 | |||
DE1027801B (de) * | 1955-08-25 | 1958-04-10 | Lorenz C Ag | Traeger fuer Oxydkathoden |
JPS4321650Y1 (fr) * | 1965-05-27 | 1968-09-11 | ||
BE759174A (fr) * | 1969-11-21 | 1971-05-19 | Philips Nv | Cathode a reserve et son procede de realisation |
DE2245717A1 (de) * | 1972-09-18 | 1974-03-28 | Patra Patent Treuhand | Elektrode mit einem poroesen sinterkoerper |
FR2215699B1 (fr) * | 1973-01-30 | 1976-04-30 | Commissariat Energie Atomique | |
DE2331558A1 (de) * | 1973-06-20 | 1975-01-16 | Siemens Ag | Nichtabschmelzende elektrode, insbesondere zum wig-schweissen, sowie verfahren zu deren herstellung |
CH582951A5 (fr) * | 1973-07-09 | 1976-12-15 | Bbc Brown Boveri & Cie | |
US4019081A (en) * | 1974-10-25 | 1977-04-19 | Bbc Brown Boveri & Company Limited | Reaction cathode |
-
1978
- 1978-05-24 DE DE19782822665 patent/DE2822665A1/de not_active Withdrawn
-
1979
- 1979-02-09 AT AT0099779A patent/AT367568B/de not_active IP Right Cessation
- 1979-04-03 US US06/026,547 patent/US4275123A/en not_active Expired - Lifetime
- 1979-04-10 JP JP4258379A patent/JPS54146950A/ja active Pending
- 1979-05-03 GB GB7915431A patent/GB2027263B/en not_active Expired
- 1979-05-03 FR FR7911113A patent/FR2425144A1/fr active Granted
- 1979-05-03 HU HU79BO1778A patent/HU187247B/hu unknown
- 1979-05-03 NL NL7903494A patent/NL7903494A/xx not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1381553A (fr) * | 1962-10-31 | 1964-12-14 | Thomson Houston Comp Francaise | Perfectionnements aux tubes électroniques |
FR1555031A (fr) * | 1967-02-08 | 1969-01-24 | ||
DE2454569A1 (de) * | 1974-10-25 | 1976-04-29 | Bbc Brown Boveri & Cie | Reaktionskathode |
FR2290025A1 (fr) * | 1974-10-25 | 1976-05-28 | Bbc Brown Boveri & Cie | Cathode a reaction |
EP0005279A2 (fr) * | 1978-05-05 | 1979-11-14 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Cathode chaude |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0143222A1 (fr) * | 1983-09-30 | 1985-06-05 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Cathode thermionique à haut pouvoir emissif pour tube électronique et son procédé de fabrication |
EP0685868A1 (fr) * | 1994-05-31 | 1995-12-06 | Nec Corporation | Dispositif de cathode et tube à électrons comportant ce dispositif |
US5757115A (en) * | 1994-05-31 | 1998-05-26 | Nec Corporation | Cathode member and electron tube having the cathode member mounted thereon |
Also Published As
Publication number | Publication date |
---|---|
JPS54146950A (en) | 1979-11-16 |
GB2027263B (en) | 1982-12-15 |
NL7903494A (nl) | 1979-11-07 |
ATA99779A (de) | 1981-11-15 |
DE2822665A1 (de) | 1979-11-08 |
GB2027263A (en) | 1980-02-13 |
FR2425144B1 (fr) | 1982-11-12 |
HU187247B (en) | 1985-11-28 |
AT367568B (de) | 1982-07-12 |
US4275123A (en) | 1981-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |