EP0236241A1 - Träger für Dreh-Antikathode von Röntgenröhren - Google Patents

Träger für Dreh-Antikathode von Röntgenröhren Download PDF

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Publication number
EP0236241A1
EP0236241A1 EP87420026A EP87420026A EP0236241A1 EP 0236241 A1 EP0236241 A1 EP 0236241A1 EP 87420026 A EP87420026 A EP 87420026A EP 87420026 A EP87420026 A EP 87420026A EP 0236241 A1 EP0236241 A1 EP 0236241A1
Authority
EP
European Patent Office
Prior art keywords
carbon
support
parts
support according
graphite
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
EP87420026A
Other languages
English (en)
French (fr)
Other versions
EP0236241B1 (de
Inventor
Jacques Fourre
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.)
Mersen SA
Original Assignee
Carbone Lorraine 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 Carbone Lorraine SA filed Critical Carbone Lorraine SA
Priority to AT87420026T priority Critical patent/ATE49323T1/de
Publication of EP0236241A1 publication Critical patent/EP0236241A1/de
Application granted granted Critical
Publication of EP0236241B1 publication Critical patent/EP0236241B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/08—Targets (anodes) and X-ray converters
    • H01J2235/083—Bonding or fixing with the support or substrate
    • H01J2235/084—Target-substrate interlayers or structures, e.g. to control or prevent diffusion or improve adhesion
    • 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
    • Y10T428/12625—Free carbon 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
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/1284—W-base 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
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer

Definitions

  • the present invention relates to a support for a rotating anticathode of X-ray tubes, anticathode of the type comprising a disc consisting of a support of carbonaceous material on which is fixed or deposited a layer of refractory metal such as tungsten.
  • the invention relates more particularly to a support for anticathode rotating at high speed (20,000 revolutions / minute and beyond).
  • the carbon material used for the support is chosen from polycrystalline graphites whose expansion coefficient is compatible with that of the refractory metal which is fixed (for example by brazing) or deposited (for example in vapor phase) on the support .
  • carbon fiber / carbon matrix composites have a much greater mechanical resistance than the aforementioned polycrystalline graphites. We could therefore consider using them as a support, their mechanical resistance preventing the disc from bursting under the effect of centrifugal force. However, their coefficient of expansion is incompatible with that of the refractory metals generally used.
  • the main object of the invention is to obtain a support having both thermal characteristics compatible with those of the chosen refractory metal, and very good mechanical resistance.
  • This object is achieved according to the invention which consists of a support made of carbonaceous material intended to receive a layer of refractory metal for rotating anticathode of X-ray tubes, support characterized in that it consists of two integral parts one of the other, one being of carbon / carbon composite, the other of polycrystalline graphite, the latter being intended to receive said refractory metal.
  • a thermal contact is ensured between them by any suitable process: brazing, carbon infiltration in the vapor phase, insertion of metal or graphite powder, flexible graphite sheet such as a PAPYEX sheet. (trademark registered by the applicant) etc ...
  • the composite part surrounds the polycrystalline graphite part like a belt.
  • the support can be obtained by shrinking.
  • the carbon / carbon composites are generally chosen from those having a fabric or felt substrate with a fiber density greater than 0.5 and the following characteristics:
  • Figures 1, 2, 3, 4 and 5 show in section, for information and not limitation, montages of anticathodes comprising a support according to the invention.
  • the assembly comprises an anticathode 1 fixed to a rod 2.
  • the support of the anticathode consists of a part in carbon / carbon composite 3 juxtaposed with a part in polycrystalline graphite 4.
  • the refractory metal 5 is fixed on the latter.
  • a solder 6, for example made of titanium alloy, makes the two parts integral and at the same time ensures thermal contact between them. Alternatively, this solder can be replaced by carbon vapor infiltration.
  • the assembly comprises an anticathode 1 fixed to a rod 2.
  • the support of the anticathode consists of a part in carbon / carbon composite 3 mechanically secured by a recess 7 to a part in polycrystalline graphite 4.
  • the refractory metal 5 is fixed on the latter.
  • the thermal contact between the two parts is provided by a solder, or a powdered metal such as zirconium for example, or powdered graphite, etc. (item 8).
  • the assembly comprises an anticathode 1 fixed to a rod 2.
  • the support of the anticathode consists of a part made of carbon / carbon composite 3 having the shape of a bowl in which the graphite part is pierced polycrystalline 4.
  • the refractory metal 5 is fixed on the latter.
  • the thermal contact between the two parts is ensured by a solder or a powdered metal, or powdered graphite, or by a flexible graphite sheet (item 8).
  • the assembly comprises an anticathode 1 fixed to a rod 2.
  • the support of the anticathode consists of a carbon / carbon composite part 3 into which an annular polycrystalline graphite bowl 4 is embedded.
  • refractory metal 5, itself of annular shape, is embedded in the ring 4.
  • the assembly comprises an anticathode 1 fixed to a rod 2.
  • the support of the anticathode consists of a part made of carbon / carbon composite 3 surrounding a flat disc made of polycrystalline graphite 4.
  • the refractory metal 5 is fixed on this last.
  • the joining of these two parts can be done by shrinking.
  • the thickness of the polycrystalline graphite part carrying the refractory metal is minimum and the thickness of the carbon / carbon composite part is maximum .
  • thicknesses of polycrystalline graphite of the order of 2 to 8 mm there are thicknesses of carbon / carbon composite of the order of 10 to 20 mm.
  • the thickness of the refractory metal generally varies depending on whether it is fixed by brazing or deposited by chemical vapor deposition. In the first case, it is of the order of 3 to 8 mm, in the second of 0.4 to 1 mm.
  • a series of supports for anticathodes are produced as shown in FIG. 3. Each support has a diameter of 120 mm.
  • the maximum thickness of the polycrystalline graphite part is 8 mm and the thickness of the carbon / carbon composite part is 15 mm.
  • the applicant's grade 1116 PT polycrystalline graphite has the following characteristics:
  • the carbon / carbon composite is an AEROLOR (trademark registered by the applicant), the AEROLOR 22 which has the following characteristics:
  • the polycrystalline graphite part of half of the supports is coated by chemical vapor deposition with a layer of tungsten 1.0 mm thick.
  • the supports, coated or not, are subjected to a burst test and the results obtained are compared to those obtained with conventional supports in polycrystalline graphite only, coated or not with the same thickness of tungsten.
EP87420026A 1986-01-30 1987-01-28 Träger für Dreh-Antikathode von Röntgenröhren Expired - Lifetime EP0236241B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420026T ATE49323T1 (de) 1986-01-30 1987-01-28 Traeger fuer dreh-antikathode von roentgenroehren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8601647A FR2593638B1 (fr) 1986-01-30 1986-01-30 Support pour anticathode tournante de tubes a rayons x
FR8601647 1986-01-30

Publications (2)

Publication Number Publication Date
EP0236241A1 true EP0236241A1 (de) 1987-09-09
EP0236241B1 EP0236241B1 (de) 1990-01-03

Family

ID=9331874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420026A Expired - Lifetime EP0236241B1 (de) 1986-01-30 1987-01-28 Träger für Dreh-Antikathode von Röntgenröhren

Country Status (9)

Country Link
US (1) US4847883A (de)
EP (1) EP0236241B1 (de)
JP (1) JPS63164150A (de)
AT (1) ATE49323T1 (de)
CA (1) CA1264801A (de)
DE (1) DE3761346D1 (de)
ES (1) ES2012408B3 (de)
FR (1) FR2593638B1 (de)
GR (1) GR3000291T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686732A1 (fr) * 1992-01-24 1993-07-30 Gen Electric Cgr Anode en graphite pour tube a rayons x et tube ainsi obtenu.
DE19906854A1 (de) * 1999-02-18 2000-08-31 Siemens Ag Drehanode für eine Röntgenröhre und Verfahren zur Herstellung einer solchen Drehanode

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625035B1 (fr) * 1987-12-22 1993-02-12 Thomson Cgr Anode tournante en materiau composite pour tube a rayons x
FR2654387B1 (fr) * 1989-11-16 1992-04-10 Lorraine Carbone Materiau multicouche comprenant du graphite souple renforce mecaniquement, electriquement et thermiquement par un metal et procede de fabrication.
US5247563A (en) * 1992-02-25 1993-09-21 General Electric Company High vapor pressure metal for X-ray anode braze joint
FR2702086B1 (fr) * 1992-10-15 1995-03-31 General Electric Cgr Anode tournante pour tube à rayonnement X composite.
JP3612795B2 (ja) * 1994-08-20 2005-01-19 住友電気工業株式会社 Ｘ線発生装置
US5875228A (en) * 1997-06-24 1999-02-23 General Electric Company Lightweight rotating anode for X-ray tube
US6463125B1 (en) * 1999-05-28 2002-10-08 General Electric Company High performance x-ray target
US6584172B2 (en) * 2000-04-03 2003-06-24 General Electric Company High performance X-ray target
DE102005034687B3 (de) * 2005-07-25 2007-01-04 Siemens Ag Drehkolbenstrahler
US7382864B2 (en) * 2005-09-15 2008-06-03 General Electric Company Systems, methods and apparatus of a composite X-Ray target
US8553844B2 (en) * 2007-08-16 2013-10-08 Koninklijke Philips N.V. Hybrid design of an anode disk structure for high prower X-ray tube configurations of the rotary-anode type
JP5676594B2 (ja) * 2009-06-29 2015-02-25 コーニンクレッカ フィリップス エヌ ヴェ 熱放散要素を有する陽極ディスク要素
CN106575592B (zh) * 2014-08-12 2020-10-16 皇家飞利浦有限公司 旋转阳极以及用于生产旋转阳极的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2152049A1 (de) * 1971-10-19 1973-04-26 Siemens Ag Drehanoden-roentgenroehre
GB2055245A (en) * 1979-07-18 1981-02-25 Philips Nv Rotary anode for an x-ray tube and method of manufacturing such an anode
GB2084124A (en) * 1980-09-15 1982-04-07 Gen Electric Improved graphite X-ray tube target
EP0050893A1 (de) * 1980-10-29 1982-05-05 Philips Patentverwaltung GmbH Röntgenröhren-Drehanode
US4335327A (en) * 1978-12-04 1982-06-15 The Machlett Laboratories, Incorporated X-Ray tube target having pyrolytic amorphous carbon coating
FR2566961A1 (fr) * 1984-06-27 1986-01-03 Gen Electric Anode perfectionnee pour un tube a rayons x

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979814A (en) * 1957-12-04 1961-04-18 Horizons Inc Joining of graphite members
US3174895A (en) * 1960-09-07 1965-03-23 Union Carbide Corp Graphite cloth laminates
US3821581A (en) * 1971-08-02 1974-06-28 Machlett Lab Inc Targets for x ray tubes
FR2242775A1 (en) * 1973-08-31 1975-03-28 Radiologie Cie Gle Rotary anode for X-ray tubes - using pseudo-monocrystalline graphite for better heat conduction
US3900751A (en) * 1974-04-08 1975-08-19 Machlett Lab Inc Rotating anode x-ray tube
DE2646454C2 (de) * 1976-10-14 1985-01-03 Siemens AG, 1000 Berlin und 8000 München Röntgenröhren-Drehanode
JPS5829129Y2 (ja) * 1977-12-14 1983-06-25 呉羽化学工業株式会社 真空炉用多層成形断熱材
DE2910138A1 (de) * 1979-03-15 1980-09-25 Philips Patentverwaltung Anodenscheibe fuer eine drehanoden- roentgenroehre
US4276493A (en) * 1979-09-10 1981-06-30 General Electric Company Attachment means for a graphite x-ray tube target
DE2941396A1 (de) * 1979-10-12 1981-04-23 Philips Patentverwaltung Gmbh, 2000 Hamburg Drehanoden-roentgenroehre mit einem grundkoerper aus graphit
DE3226858A1 (de) * 1982-07-17 1984-01-19 Philips Patentverwaltung Gmbh, 2000 Hamburg Drehanoden-roentgenroehre
US4641334A (en) * 1985-02-15 1987-02-03 General Electric Company Composite rotary anode for X-ray tube and process for preparing the composite

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2152049A1 (de) * 1971-10-19 1973-04-26 Siemens Ag Drehanoden-roentgenroehre
US4335327A (en) * 1978-12-04 1982-06-15 The Machlett Laboratories, Incorporated X-Ray tube target having pyrolytic amorphous carbon coating
GB2055245A (en) * 1979-07-18 1981-02-25 Philips Nv Rotary anode for an x-ray tube and method of manufacturing such an anode
GB2084124A (en) * 1980-09-15 1982-04-07 Gen Electric Improved graphite X-ray tube target
EP0050893A1 (de) * 1980-10-29 1982-05-05 Philips Patentverwaltung GmbH Röntgenröhren-Drehanode
FR2566961A1 (fr) * 1984-06-27 1986-01-03 Gen Electric Anode perfectionnee pour un tube a rayons x

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2686732A1 (fr) * 1992-01-24 1993-07-30 Gen Electric Cgr Anode en graphite pour tube a rayons x et tube ainsi obtenu.
DE19906854A1 (de) * 1999-02-18 2000-08-31 Siemens Ag Drehanode für eine Röntgenröhre und Verfahren zur Herstellung einer solchen Drehanode

Also Published As

Publication number Publication date
FR2593638B1 (fr) 1988-03-18
JPS63164150A (ja) 1988-07-07
JPH0361301B2 (de) 1991-09-19
ES2012408B3 (es) 1990-03-16
DE3761346D1 (de) 1990-02-08
EP0236241B1 (de) 1990-01-03
FR2593638A1 (fr) 1987-07-31
CA1264801A (fr) 1990-01-23
ATE49323T1 (de) 1990-01-15
US4847883A (en) 1989-07-11
GR3000291T3 (en) 1991-03-15

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