EP0185598A1 - Drehanode für Röntgenröhre - Google Patents

Drehanode für Röntgenröhre Download PDF

Info

Publication number
EP0185598A1
EP0185598A1 EP85420225A EP85420225A EP0185598A1 EP 0185598 A1 EP0185598 A1 EP 0185598A1 EP 85420225 A EP85420225 A EP 85420225A EP 85420225 A EP85420225 A EP 85420225A EP 0185598 A1 EP0185598 A1 EP 0185598A1
Authority
EP
European Patent Office
Prior art keywords
emissive material
anode according
anode
base body
ray tube
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
Application number
EP85420225A
Other languages
English (en)
French (fr)
Other versions
EP0185598B1 (de
Inventor
Michel Bargues
René Romano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Original Assignee
Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA filed Critical Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Priority to AT85420225T priority Critical patent/ATE39784T1/de
Publication of EP0185598A1 publication Critical patent/EP0185598A1/de
Application granted granted Critical
Publication of EP0185598B1 publication Critical patent/EP0185598B1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/108—Substrates for and bonding of emissive target, e.g. composite structures

Definitions

  • the present invention relates to an anode, in particular a rotating anode, intended to equip an X-ray tube.
  • the X-ray tubes used mainly in radiology are equipped with disc-shaped anodes or anticathodes whose function is to emit X-radiation from the parts of their surface which are subjected to the action of a flow of electrons coming from a cathode with a sufficiently high kinetic energy.
  • this basic body had to have, at the same time, a high melting temperature, a high specific heat and a good coefficient of thermal conductivity.
  • molybdenum we turned to graphite because it had a much higher specific heat and also because it was lighter, which simplified its rotation in the case of rotating anodes.
  • problems with cracking of the active zone due, at the same time, to reactions which occur between the tungsten layer and the graphite and which lead to fragile intermediate layers. and differences in expansion between the materials present.
  • it has been recommended to deposit a barrier layer between graphite and tungsten which can be, for example, pure rhenium as taught in French patent 1,575,111.
  • This product is a nitrogenous aluminum compound, with the chemical formula AlN which can be obtained in the powder state and whose thermal and mechanical properties allow it to be shaped by conventional sintering techniques to give a solid of density 3 , 26 approximately, that is to say a little larger than graphite but, significantly smaller than that of molybdenum.
  • This product also has a relatively high melting temperature and in particular a good coefficient of thermal conductivity which makes it possible to channel and evacuate throughout the anode the significant thermal flux created in the active area.
  • the Applicant has found perfect adhesion between the elements of the composite thus formed, a quality which is maintained over time. even under the action of electron fluxes of very high kinetic energy.
  • the anode according to the invention finds its application in all X-ray tubes including the most recent models implementing high powers and rotational speeds which can be greater than 10,000 revolutions / minute.

Landscapes

  • X-Ray Techniques (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Ceramic Products (AREA)
EP85420225A 1984-12-13 1985-12-10 Drehanode für Röntgenröhre Expired EP0185598B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85420225T ATE39784T1 (de) 1984-12-13 1985-12-10 Drehanode fuer roentgenroehre.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8419398 1984-12-13
FR8419398A FR2574988B1 (fr) 1984-12-13 1984-12-13 Anode tournante pour tube a rayons x

Publications (2)

Publication Number Publication Date
EP0185598A1 true EP0185598A1 (de) 1986-06-25
EP0185598B1 EP0185598B1 (de) 1989-01-04

Family

ID=9310746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85420225A Expired EP0185598B1 (de) 1984-12-13 1985-12-10 Drehanode für Röntgenröhre

Country Status (6)

Country Link
EP (1) EP0185598B1 (de)
JP (1) JPS61143929A (de)
AT (1) ATE39784T1 (de)
DE (1) DE3567318D1 (de)
FR (1) FR2574988B1 (de)
SU (1) SU1479013A3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0405897A2 (de) * 1989-06-26 1991-01-02 Praxair S.T. Technology, Inc. Beschichteter Artikel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0793099B2 (ja) * 1990-07-27 1995-10-09 信淳 渡辺 回転陽極ｘ線管ターゲットの製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178523B (de) * 1962-07-04 1964-09-24 Patra Patent Treuhand Roentgenroehren-Drehanode, insbesondere tellerfoermige Drehanode
FR1575111A (de) * 1966-01-03 1969-07-25
US3919124A (en) * 1972-01-17 1975-11-11 Siemens Ag X-ray tube anode
FR2305018A1 (fr) * 1975-03-19 1976-10-15 Plansee Metallwerk Anode a rayons x avec, a l'exterieur du foyer, un mince revetement en metal et materiau ceramique
FR2441919A1 (fr) * 1978-11-20 1980-06-13 Machlett Lab Inc Materiau pour cible a rayons x et tube a rayons x utilisant ce materiau

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819971A (en) * 1972-03-22 1974-06-25 Ultramet Improved composite anode for rotating-anode x-ray tubes thereof
JPS56141153A (en) * 1980-04-03 1981-11-04 Toshiba Corp Target for x-ray tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178523B (de) * 1962-07-04 1964-09-24 Patra Patent Treuhand Roentgenroehren-Drehanode, insbesondere tellerfoermige Drehanode
FR1575111A (de) * 1966-01-03 1969-07-25
US3919124A (en) * 1972-01-17 1975-11-11 Siemens Ag X-ray tube anode
FR2305018A1 (fr) * 1975-03-19 1976-10-15 Plansee Metallwerk Anode a rayons x avec, a l'exterieur du foyer, un mince revetement en metal et materiau ceramique
FR2441919A1 (fr) * 1978-11-20 1980-06-13 Machlett Lab Inc Materiau pour cible a rayons x et tube a rayons x utilisant ce materiau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0405897A2 (de) * 1989-06-26 1991-01-02 Praxair S.T. Technology, Inc. Beschichteter Artikel
EP0405897A3 (en) * 1989-06-26 1991-03-20 Union Carbide Coatings Service Technology Corp. Coated article

Also Published As

Publication number Publication date
SU1479013A3 (ru) 1989-05-07
JPS61143929A (ja) 1986-07-01
ATE39784T1 (de) 1989-01-15
FR2574988B1 (fr) 1988-04-29
EP0185598B1 (de) 1989-01-04
FR2574988A1 (fr) 1986-06-20
JPH023263B2 (de) 1990-01-23
DE3567318D1 (en) 1989-02-09

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