EP0236241B1 - Support for rotating the anti-cathode of an x-ray tube - Google Patents
Support for rotating the anti-cathode of an x-ray tube Download PDFInfo
- Publication number
- EP0236241B1 EP0236241B1 EP87420026A EP87420026A EP0236241B1 EP 0236241 B1 EP0236241 B1 EP 0236241B1 EP 87420026 A EP87420026 A EP 87420026A EP 87420026 A EP87420026 A EP 87420026A EP 0236241 B1 EP0236241 B1 EP 0236241B1
- 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.)
- Expired - Lifetime
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Classifications
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- 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
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- 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
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- 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
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- 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 coefficient of expansion 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 (see for example FR-A-2 566 961).
- 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 in carbon fiber / carbon matrix composite, the other in 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 sheet of PAPYEX (trademark registered by the applicant) etc. ..
- the composite part surrounds the polycrystalline graphite part like a belt.
- the support can be obtained by shrinking.
- 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 3 composite juxtaposed with a polycrystalline graphite part 4.
- the refractory metal 5 is fixed on the latter.
- 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 aficathode consists of a part made of carbon / carbon composite 3 having the shape of a bowl in which is located the polycrystalline graphite part 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 mechanical and thermal connections between carbon / carbon composite and polycrystalline graphite, and between polycrystalline graphite and refractory metal are ensured for example by brazing (respectively marks 9 and 10).
- the assembly comprises an anticathode 1 fixed to a rod 2.
- the support of the anticathode is constituted by a part of carbon / carbon composite 3 surrounding a flat disc made of polycrystalline graphite 4.
- the refractory metal 5 is fixed on the latter. 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 .
- 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 made of polycrystalline graphite only, coated or not coated with the same thickness of tungsten.
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- Ceramic Products (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Earth Drilling (AREA)
- Elimination Of Static Electricity (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Physical Vapour Deposition (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- X-Ray Techniques (AREA)
- Laminated Bodies (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Supports For Pipes And Cables (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
La présente invention concerne un support pour anticathode tournante de tubes à rayons X, anticathode du type comprenant un disque - constitué d'un support en matériau carboné sur lequel est fixée ou déposée une couche de métal réfractaire tel que du tungstène. L'invention concerne plus particulièrement un support pour anticathode tournant à grande vitesse (20 000 tours/minute et au-delà).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).
. Le plus souvent, le matériau carboné utilisé pour le support est choisi parmi les graphites polycristallins dont le coefficient de dilatation est compatible avec celui du métal réfractaire qui est fixé (par exemple par brasure) ou déposé (par exemple en phase vapeur) sur le support (voir par exemple FR-A-2 566 961).. Most often, the carbon material used for the support is chosen from polycrystalline graphites whose coefficient of expansion 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 (see for example FR-A-2 566 961).
L'inconvénient majeur de ces graphites polycristallins est de ne pas avoir une résistance mécanique suffisante dès que la vitesse de l'anticathode devient considérable, par exemple 20 000 tours/mn.The major drawback of these polycrystalline graphites is that they do not have sufficient mechanical strength as soon as the speed of the anticathode becomes considerable, for example 20,000 rpm.
Il est par ailleurs connu de façon générale que les composites fibres de carbone/matrice carbone (désignés ci-après par composites carbone/carbone) ont une résistance mécanique beaucoup plus grande que les graphites polycristallins précités. On pourrait donc envisager de les utiliser comme support, leur résistance mécanique empêchant le disque d'éclater sous l'effet de la force centrifuge. Toutefois, leur coefficient de dilatation est incompatible avec celui des métaux réfractaires généralement utilisés.It is moreover generally known that the carbon fiber / carbon matrix composites (hereinafter referred to as carbon / carbon 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.
Le but principal de l'invention est d'obtenir un support présentant à la fois des caractéristiques thermiques compatibles avec celles du métal réfractaire choisi, et une très bonne résistance mécanique.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.
Ce but est atteint selon l'invention qui consiste en un support en matériau carboné destiné à recevoir une couche de métal réfractaire pour anticathode tournante de tubes à rayons X, support caractérisé en ce qu'il est constitué de deux parties solidaires l'une de l'autre, l'une étant en composite fibres de carbone/matrice carbone, l'autre en graphite polycristallin, cette dernière étant destinée à recevoir ledit métal réfractaire.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 in carbon fiber / carbon matrix composite, the other in polycrystalline graphite, the latter being intended to receive said refractory metal.
Ces deux parties peuvent se trouver l'une sous l'autre, en relation superposée, ou l'une entourant l'autre.These two parts can be found one under the other, in a superimposed relationship, or one surrounding the other.
Dans le premier cas, les deux parties peuvent être :
- soit juxtaposées et rendues mécaniquement solidaires par tout procédé de liaison convenable tel que brasure, infiltration de carbone en phase vapeur,
- soit imbriquées l'une dans l'autre par embrèvement ou encastrement, ce qui les rend mécaniquement solidaires.
- either juxtaposed and made mechanically integral by any suitable bonding process such as brazing, carbon infiltration in the vapor phase,
- either nested one inside the other by recess or embedding, which makes them mechanically integral.
Un contact thermique est assuré entre elles par tout procédé convenable : brasure, infiltration de carbone en phase vapeur, insertion de métal ou de graphite en poudre, feuille de graphite souple telle qu'une feuille de PAPYEX (marque déposée par la demanderesse) etc...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 sheet of PAPYEX (trademark registered by the applicant) etc. ..
Dans le second cas, la partie en composite entoure comme une ceinture la partie en graphite polycristallin. Le support peut être obtenu par frettage.In the second case, the composite part surrounds the polycrystalline graphite part like a belt. The support can be obtained by shrinking.
Les graphites polycristallins sont en général choisis parmi ceux ayant les caractéristiques suivantes :
- densité > 1,8
- résistance à la flexion > 40 MPa
- coefficient de dilatation entre la température ambiante et 1 000 °C : 4 à 6.10-s/°C.
- density> 1.8
- flexural strength> 40 MPa
- coefficient of expansion between room temperature and 1000 ° C: 4 to 6.10- s / ° C.
Les composites carbone/carbone sont en général choisis, parmi ceux ayant un substrat en tissu ou en feutre avec une densité de fibres supérieure à 0,5 et les caractéristiques suivantes :
- densité > 1,7
- résistance à la flexion > 150 MPa
- coefficient de dilatation entre la température ambiante et 1 000 °C : 0,5 à 2.10-6/°C.
- density> 1.7
- flexural strength> 150 MPa
- coefficient of expansion between room temperature and 1000 ° C: 0.5 to 2.10-6 / ° C.
Les figures 1, 2, 3, 4 et 5 montrent en coupe, à titre indicatif et non limitatif, des montages d'anticathodes comportant un support selon l'invention.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.
Sur la figure 1, le montage comprend une anticathode 1 fixée à une tige 2. Le support de l'anticathode est constitué d'une partie. en composite carbone/carbone 3 juxtaposée à une partie en graphite polycristallin 4. Le métal réfractaire 5 est fixé sur cette dernière. Une brasure 6, par exemple en alliage de titane, rend les deux parties solidaires et assure en même temps le contact thermique entre elles. En variante, cette brasure peut être remplacée par une infiltration de carbone en phase vapeur.In FIG. 1, the assembly comprises an
Sur la figure 2, le montage comprend une anticathode 1 fixée à une tige 2. Le support de l'anticathode est constitué d'une partie en composite carbone/carbone 3 solidarisée mécaniquement par un embrèvement 7 à une partie en graphite polycristallin 4. Le métal réfractaire 5 est fixé sur cette dernière. Le contact thermique entre les deux parties est assuré par une brasure, ou un métal en poudre tel que du zirconium par exemple, ou du graphite en poudre, etc.. (repère 8).In FIG. 2, the assembly comprises an
Sur la figure 3, le montage comprend une anticathode 1 fixée à une tige 2. Le support de l'anficathode est constitué d'une partie en composite carbone/carbone 3 ayant la forme d'une cuvette dans laquelle se trouve la partie en graphite polycristallin 4. Le métal réfractaire 5 est fixé sur cette dernière. Le contact thermique entre les deux parties est assuré par une brasure ou un métal en poudre, ou du graphite en poudre, ou par une feuille de graphite souple (repère 8).In FIG. 3, the assembly comprises an
Sur la figure 4, le montage comprend une anticathode 1 fixée à une tige 2. Le support de l'anticathode est constitué d'une partie en composite carbone/carbone 3 dans laquelle vient s'encastrer une cuvette annulaire en graphite polycristallin 4. Le métal réfractaire 5, lui-même de forme annulaire s'encastre dans l'anneau 4. Les liaisons mécaniques et thermiques entre composite carbone/carbone et graphite polycristallin, et entre graphite polycristallin et métal réfractaire sont assurées par exemple par brasage (respectivement repères 9 et 10).In FIG. 4, the assembly comprises an
--- Sur la figure 5, le montage comprend une anticathode 1 fixée à une tige 2. Le support de l'anticathode est constitué par une partie en composite carbone/carbone 3 entourant un disque plan en graphite polycristallin 4. Le métal réfractaire 5 est fixé sur ce dernier. La solidarisation de ces deux parties peut se faire par frettage.--- In FIG. 5, the assembly comprises an
Dans les montages illustrés par les figures 1, 2 et 3 pour une géométrie de l'anticathode définie, l'épaisseur de la partie en graphite polycristallin portant le métal réfractaire est minimale et l'épaisseur de la partie en composite carbone/carbone est maximale. Ainsi, par exemple, pour des épaisseurs de graphite polycristallin de l'ordre de 2 à 8 mm, on a des épaisseurs de composite carbone/carbone de l'ordre de 10 à 20 mm. L'épaisseur du métal réfractaire varie en général selon qu'il est fixé par brasure ou déposé par dépôt chimique en phase vapeur. Dans le premier cas, elle est de l'ordre de 3 à 8 mm, dans le second de 0,4 à 1 mm.In the assemblies illustrated in FIGS. 1, 2 and 3 for a defined geometry of the anticathode, the thickness of the polycrystalline graphite part carrying the refractory metal is minimum and the thickness of the carbon / carbon composite part is maximum . Thus, for example, for 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.
L'exemple suivant, donné à titre indicatif et non limitatif, montre tout l'intérêt de l'invention.The following example, given by way of non-limiting example, shows the whole point of the invention.
On réalise une série de supports pour anticathodes telles que représentées figure 3. Chaque, support a un diamètre de 120 mm. L'épaisseur maximale de la partie en graphite polycristallin est de 8 mm et l'épaisseur de la partie composite carbone/carbone est de 15 mm. Le graphite polycristallin, nuance 1116 PT de la demanderesse a les caractéristiques suivantes :
Le composite carbone/carbone est un AEROLOR (marque déposée par la demanderesse), l'AEROLOR 22 qui a les caractéristiques suivantes :
Le contact thermique entre les deux parties est assuré par une brasure au zirconium telle que décrite dans le brevet FR-A-1 249 498.The thermal contact between the two parts is ensured by zirconium solder as described in patent FR-A-1 249 498.
On revêt par dépôt chimique en phase vapeur la partie en graphite polycristallin de la moitié des supports, d'une couche de tungstène de 1,0 mm d'épaisseur.The polycrystalline graphite part of half of the supports is coated by chemical vapor deposition with a layer of tungsten 1.0 mm thick.
Les supports revêtus ou non sont soumis à un test d'éclatement et les résultats obtenus sont comparés à ceux obtenus avec des supports classiques en graphite polycristallin uniquement, revêtus ou non de la même épaisseur de tungstène.The supports, coated or not, are subjected to a burst test and the results obtained are compared to those obtained with conventional supports made of polycrystalline graphite only, coated or not coated with the same thickness of tungsten.
Tous ces résultats sont regroupés dans le tableau 1 suivant :
- la vitesse d'éclatement d'un support suivant l'invention non revêtu, est de l'ordre de 39 000 tours/mn alors que celle d'un support classique non revêtu est de l'ordre de 24 000 tours/mn
- la vitesse d'éclatement d'un support suivant l'invention revêtu de 1 mm de tungstène est de l'ordre de 32 000 tours/minute alors que celle d'un support classique revêtu également de 1 mm de tungstène est de l'ordre de 19 000 tours/minute.
- the bursting speed of an uncoated support according to the invention is of the order of 39,000 rpm while that of a conventional uncoated support is of the order of 24,000 rpm
- the burst speed of a support according to the invention coated with 1 mm of tungsten is of the order of 32,000 revolutions / minute while that of a conventional support also coated with 1 mm of tungsten is of the order 19,000 rpm.
Cette constatation montre tout l'intérêt de l'invention.This observation shows all the interest of the invention.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87420026T ATE49323T1 (en) | 1986-01-30 | 1987-01-28 | CARRIER FOR ROTATING ANTICATHODE OF X-RAY TUBES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8601647 | 1986-01-30 | ||
FR8601647A FR2593638B1 (en) | 1986-01-30 | 1986-01-30 | SUPPORT FOR ROTATING ANTICATHODE OF X-RAY TUBES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0236241A1 EP0236241A1 (en) | 1987-09-09 |
EP0236241B1 true EP0236241B1 (en) | 1990-01-03 |
Family
ID=9331874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87420026A Expired - Lifetime EP0236241B1 (en) | 1986-01-30 | 1987-01-28 | Support for rotating the anti-cathode of an x-ray tube |
Country Status (9)
Country | Link |
---|---|
US (1) | US4847883A (en) |
EP (1) | EP0236241B1 (en) |
JP (1) | JPS63164150A (en) |
AT (1) | ATE49323T1 (en) |
CA (1) | CA1264801A (en) |
DE (1) | DE3761346D1 (en) |
ES (1) | ES2012408B3 (en) |
FR (1) | FR2593638B1 (en) |
GR (1) | GR3000291T3 (en) |
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FR2625035B1 (en) * | 1987-12-22 | 1993-02-12 | Thomson Cgr | ROTATING ANODE OF COMPOSITE MATERIAL FOR X-RAY TUBE |
FR2654387B1 (en) * | 1989-11-16 | 1992-04-10 | Lorraine Carbone | MULTILAYER MATERIAL COMPRISING FLEXIBLE GRAPHITE MECHANICALLY, ELECTRICALLY AND THERMALLY REINFORCED BY A METAL AND METHOD OF MANUFACTURE. |
FR2686732B1 (en) * | 1992-01-24 | 1994-03-18 | General Electric Cgr | GRAPHITE ANODE FOR X-RAY TUBE AND TUBE THUS OBTAINED. |
US5247563A (en) * | 1992-02-25 | 1993-09-21 | General Electric Company | High vapor pressure metal for X-ray anode braze joint |
FR2702086B1 (en) * | 1992-10-15 | 1995-03-31 | General Electric Cgr | Rotating anode for composite X-ray tube. |
JP3612795B2 (en) * | 1994-08-20 | 2005-01-19 | 住友電気工業株式会社 | X-ray generator |
US5875228A (en) * | 1997-06-24 | 1999-02-23 | General Electric Company | Lightweight rotating anode for X-ray tube |
DE19906854A1 (en) * | 1999-02-18 | 2000-08-31 | Siemens Ag | Rotary 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 (en) * | 2005-07-25 | 2007-01-04 | Siemens Ag | Rotary bulb radiator for producing x-rays has rotary bulb whose inner floor contains anode of first material; floor exterior carries structure for accommodating heat conducting element(s) of higher thermal conductivity material |
US7382864B2 (en) * | 2005-09-15 | 2008-06-03 | General Electric Company | Systems, methods and apparatus of a composite X-Ray target |
EP2188827B1 (en) * | 2007-08-16 | 2012-04-18 | Philips Intellectual Property & Standards GmbH | Hybrid design of an anode disk structure for high power x-ray tube configurations of the rotary-anode type |
CN102473572B (en) * | 2009-06-29 | 2016-06-22 | 皇家飞利浦电子股份有限公司 | Anode disk element including heat dissipation element |
US10056222B2 (en) | 2014-08-12 | 2018-08-21 | Koninklijke Philips N.V. | Rotating anode and method for producing a rotating anode |
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US4276493A (en) * | 1979-09-10 | 1981-06-30 | General Electric Company | Attachment means for a graphite x-ray tube target |
DE2941396A1 (en) * | 1979-10-12 | 1981-04-23 | Philips Patentverwaltung Gmbh, 2000 Hamburg | TURNING ANODE X-RAY TUBES WITH A BASE OF GRAPHITE |
GB2084124A (en) * | 1980-09-15 | 1982-04-07 | Gen Electric | Improved graphite X-ray tube target |
DE3040719A1 (en) * | 1980-10-29 | 1982-05-19 | Philips Patentverwaltung Gmbh, 2000 Hamburg | X-RAY TUBE ROTATING ANODE |
DE3226858A1 (en) * | 1982-07-17 | 1984-01-19 | Philips Patentverwaltung Gmbh, 2000 Hamburg | TURNING ANODE TUBE TUBES |
US4573185A (en) * | 1984-06-27 | 1986-02-25 | General Electric Company | X-Ray tube with low off-focal spot radiation |
US4641334A (en) * | 1985-02-15 | 1987-02-03 | General Electric Company | Composite rotary anode for X-ray tube and process for preparing the composite |
-
1986
- 1986-01-30 FR FR8601647A patent/FR2593638B1/en not_active Expired
-
1987
- 1987-01-27 CA CA000528212A patent/CA1264801A/en not_active Expired - Fee Related
- 1987-01-27 JP JP62017129A patent/JPS63164150A/en active Granted
- 1987-01-27 US US07/007,093 patent/US4847883A/en not_active Expired - Fee Related
- 1987-01-28 ES ES87420026T patent/ES2012408B3/en not_active Expired - Lifetime
- 1987-01-28 EP EP87420026A patent/EP0236241B1/en not_active Expired - Lifetime
- 1987-01-28 AT AT87420026T patent/ATE49323T1/en not_active IP Right Cessation
- 1987-01-28 DE DE8787420026T patent/DE3761346D1/en not_active Expired - Fee Related
-
1990
- 1990-02-21 GR GR89400141T patent/GR3000291T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
CA1264801A (en) | 1990-01-23 |
ES2012408B3 (en) | 1990-03-16 |
JPS63164150A (en) | 1988-07-07 |
JPH0361301B2 (en) | 1991-09-19 |
FR2593638B1 (en) | 1988-03-18 |
GR3000291T3 (en) | 1991-03-15 |
ATE49323T1 (en) | 1990-01-15 |
FR2593638A1 (en) | 1987-07-31 |
US4847883A (en) | 1989-07-11 |
EP0236241A1 (en) | 1987-09-09 |
DE3761346D1 (en) | 1990-02-08 |
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