EP2206136A1 - Röntgen-drehanodenteller und verfahren zu seiner herstellung - Google Patents
Röntgen-drehanodenteller und verfahren zu seiner herstellungInfo
- Publication number
- EP2206136A1 EP2206136A1 EP08836274A EP08836274A EP2206136A1 EP 2206136 A1 EP2206136 A1 EP 2206136A1 EP 08836274 A EP08836274 A EP 08836274A EP 08836274 A EP08836274 A EP 08836274A EP 2206136 A1 EP2206136 A1 EP 2206136A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anode plate
- ray
- rotary anode
- plate according
- base body
- 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
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 37
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 37
- 239000011852 carbon nanoparticle Substances 0.000 claims abstract description 15
- 238000009792 diffusion process Methods 0.000 claims abstract description 15
- 230000004888 barrier function Effects 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 239000007858 starting material Substances 0.000 claims abstract 8
- 239000000654 additive Substances 0.000 claims abstract 3
- 229910002804 graphite Inorganic materials 0.000 claims description 17
- 239000010439 graphite Substances 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 239000011733 molybdenum Substances 0.000 claims description 10
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 9
- 239000010937 tungsten Substances 0.000 claims description 9
- 229910052721 tungsten Inorganic materials 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 229910052702 rhenium Inorganic materials 0.000 claims description 8
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 8
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 6
- 150000001247 metal acetylides Chemical class 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 239000010955 niobium Substances 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- -1 borides Chemical class 0.000 claims description 4
- 150000004767 nitrides Chemical class 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 206010010144 Completed suicide Diseases 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 229910052735 hafnium Inorganic materials 0.000 claims description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 16
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000002591 computed tomography Methods 0.000 abstract 1
- 239000002105 nanoparticle Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 55
- 229920000049 Carbon (fiber) Polymers 0.000 description 7
- 239000004917 carbon fiber Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 238000010290 vacuum plasma spraying Methods 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000002109 single walled nanotube Substances 0.000 description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 3
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 2
- 229910039444 MoC Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910003468 tantalcarbide Inorganic materials 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000691 Re alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VXYAXARSCYHTTI-UHFFFAOYSA-N [Ta].[Re].[W] Chemical compound [Ta].[Re].[W] VXYAXARSCYHTTI-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- UNASZPQZIFZUSI-UHFFFAOYSA-N methylidyneniobium Chemical compound [Nb]#C UNASZPQZIFZUSI-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003282 rhenium compounds Chemical class 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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
- H01J2235/081—Target material
Definitions
- the invention relates to an x-ray rotary anode plate and a method for its production, wherein the x-ray rotary anode plate has a base body.
- This base body which carries an applied layer or an inserted body of X-ray active material with the focal path, for example of a tungsten-rhenium alloy with 5 to 10 mass% rhenium, has the function to give the overall structure the necessary strength and the derive heat energy arising in the energetic conversion of electron radiation into X-ray radiation.
- the material of the base body depends above all on such characteristic values as heat capacity, thermal conductivity, heat transfer and adaptation of the thermal expansion between or from X-ray-active material and base body.
- the requirements for the thermal and mechanical load capacity of the X-ray rotary anode plates are constantly increasing. At present, temperatures of over 3000 ° C. can occur in the case of high-performance x-ray tubes in the electronic focal spot. For better energy distribution of the plate rotates at 9,000 rpm "1;.! Are planned speeds of 15,000 min * 1 and more With the same objective, the diameter of the rotating anode plate, is already at 200 mm and are planned 300 mm The strength of the base body material needs of this fact Take into account.
- base body for the application mentioned of fiber-reinforced graphite have become known.
- carbon fibers are used, wherein on the spatial arrangement of the fibers or fiber braids, for example, an adjustment of the thermal expansion coefficient of the base body to those of the applied X-ray active material (DE 103 01 069 A1) or a high thermal expansion in the radial direction associated with a high thermal conductivity in the axial Direction to be achieved (DE 196 50 061 A1).
- the mentioned carbon fibers in the fiber direction have a good thermal conductivity and very good strength properties, but perpendicular to these properties are orders of magnitude worse.
- this anisotropy has been attempted to be limited by a three-dimensional weaving of the carbon fibers, but the material nevertheless remains anisotropic in the two-digit micrometer range.
- a novel material based on carbon are the so-called carbon nanotubes ("carbon nano tubes” or “CNT”), whose technical development from the very beginning in the section "Background of the invention” in the translation of the European patent DE 695 32 044 T2, wherein the invention described in this patent specification with chemically effective functional layers on carbon nanotubes a completely different subject of the invention as the present invention.
- CNT carbon nano tubes
- the carbon nanotubes While in conventional graphite carbon atoms are arranged in a hexagonal arrangement planar in individual planes, in the carbon nanotubes such hexagonal arrangements are tube-like closed, resulting in excellent mechanical, electrical and thermal properties. As the syllable "nano" expresses, the diameters of these carbon nanotubes are in the nanometer range, with 0.4 nm to 50 nm or 100 nm, depending on the source.
- the bulk density of these carbon nanotubes according to the manufacturer is in the order of 0.15 g / cm 3 , the material density is given with 1, 3 g / cm 3 to 1.4 g / cm 3 , which is significantly lower than that of graphite.
- the strength is called a theoretical value of 45 GPa, which would be about 20 times that of steel and 200 times the above-mentioned base body material TZM.
- the theoretical thermal conductivity is 6000 W / m K and thus exceeds that of diamond by twice and that of metallic heat conductors by at least one order of magnitude.
- a cathode for an X-ray tube in which to achieve a cathode surface of small dimensions, the carbon nanotubes are arranged on a plate with a negative potential and emit electrons as emitter to an opposite target of copper (Japanese Patent Kurz IS 2005166565).
- cathode ray tube cathode they are arranged behind a control grid and serve to realize a cathode with adjustable emission surface (Japanese Patent Abbreviation 2006086001).
- an X-ray anode is known, on the anode Anners Economics Structure carbon nanotubes are preferably arranged in the form of a tissue to suppress the formation of secondary electrons and the formation of a plasma or the release of neutral gases (WO 03/043036 A1).
- base bodies for X-ray rotary anodes are also known as state of the art for the present invention, in which carbon fibers, preferably carbon nanotubes, are embedded in copper (DE 102005039187) or in titanium (DE 102005039188) in order to improve heat dissipation.
- Copper has the disadvantage that its melting point is too low for high heat dissipation performance; Titanium, like copper, has the disadvantage that it tends to carbide at the operating temperature with the carbon present.
- carbon nanoparticles having a graphitic structure and a substantially spherical shape having an average particle size of, for example, 55 nm have also become known (company publication by the company Auer-Remy GmbH, Hamburg “Nanopowders", position "C 1249YD 7440-44-0").
- properties of carbon nanoparticles prepares for spherical particles with their dimensions in all axial dimensions the achievement of a substantially isotropic properties of the base body capturing spatial distribution naturally less procedural difficulties in the preparation of raw materials for the shaping of the base body than in carbon nanotubes their axial extent.
- Tantalum carbide has been proposed, among other compounds, as back coating of the rotating anode plate in order to improve the heat radiation (DE 2 805 154).
- molybdenum carbide and tungsten carbide have become known in arrangements having a plurality of layers for adjusting the thermal expansion coefficient between the X-ray active layer and the base body (DE 10 2005 015 920).
- the invention has for its object to provide an X-ray rotary anode plate with a base body, which the above-mentioned requirements in terms of the temperature of the focal spot and the desired speeds of X-ray rotary anode plates by a lower mass, a corresponding thermal conductivity and sufficient high temperature strength at To meet at least the same or lower material costs of the base body and thereby able to remedy the deficiencies of the prior art.
- the object of the invention is furthermore to provide a rational production method for such an X-ray rotary anode plate consisting of the base body with X-ray active layer with necessary or advantageous intermediate layers between the two.
- the preparation of the base body according to the invention with Kohlenstoffna- noeilchen or from high performance graphite and / or fiber graphite materials containing such carbon nanoparticles is according to the conventional as well as with the help of the latest powder technologies it is necessary to ensure that the structure of the carbon fibers, especially the carbon nanotubes, is not destroyed.
- a fundamental prerequisite for achieving the desired effects with respect to high-temperature strength, thermal conductivity and thermal expansion is the quasi-homogeneous distribution of the carbon nanoparticles in the component in order to obtain a base body that is essentially isotropic in the submaxoscopic region, ie. an anisotropy degree of, for example, ⁇ 1, 2 (ratio of the maximum value to the minimum value when measured in the three spatial dimensions) with respect to strength, thermal conductivity and thermal expansion to achieve.
- Particularly favorable is a slightly angled shape of the individual carbon nanotubes.
- the macroflexibility of the base material may be enhanced by the addition of high strength compounds such as oxides, nitrides, borides, carbides, suicides of tantalum, niobium, chromium, silicon, molybdenum, hafnium, boron and / or tungsten or mixtures thereof and fibers of these materials be increased. Also, mixtures of these compounds are conceivable.
- the proportion of these substances in the axial direction can be varied, and it is also advantageous if the optionally present proportion of graphite or graphite fibers to the X-ray-active layer in favor of the proportion of carbon nanoparticles and said strength-enhancing Substances decreases.
- the base body can be provided with the X-ray-active layer according to the usual coating method, wherein for controlling the harmful carbon diffusion per se known diffusion barrier layers of rhenium, molybdenum, tantalum, niobium, zirconium, titanium or compounds and combinations of these metals and in more advantageous Embodiment of the invention, a binding layer, for example, by introducing rhenium or rhenium compounds, or carbides in the surface region of the base body, are arranged.
- a leveling layer preferably of molybdenum or a molybdenum alloy between the diffusion barrier layer and the X-ray active layer. It serves, for example, to compensate for differences between the two aforementioned layers in terms of thermal expansion and / or ductility.
- a particularly quickly realizable technical solution is the joining of a conventional X-ray rotating anode plate made of metal with the base body, the plate can be performed much thinner because of the better strength properties of the base body according to the invention as in the prior art, which helps to save mass and cost, in principle It should be noted that the reduced mass is advantageous not only in terms of material costs but also because of the lower centrifugal forces.
- Fig. 3 an X-ray rotary anode plate according to Embodiment 4 and
- FIG. 4 shows an X-ray rotary anode plate according to exemplary embodiment 5.
- the X-ray rotary anode plate shown in section in FIG. 1 consists of a base body 1.1 with 60% by mass of carbon nanotubes and 40% by mass of nano-graphite powder particles, onto which by vacuum plasma spraying a per se known diffusion barrier layer 3.1 of tungsten-rhenium tantalum, at the same time serves as a bonding layer 4.1, and the X-ray active layer 2.1 are applied.
- the diameter of the X-ray rotary anode plate is 120 mm, its thickness 15 mm.
- the base body 1.1 is prepared by the conventional methods of powder metallurgy and graphite processing by mixing the powders, pressing and heat treatment, under circumstances using the hot pressing method, in dimensions close to the final shape and finished by cutting shaping.
- Commercially available uncoated carbon nanotubes and fine-grained nano-graphite powder particles of high purity are used, the former differing only slightly in length and diameter and should be shorter than 10 nm on average. Your longitudinal axis should deviate from the straight line if possible
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- the X-ray rotary anode plate shown in section in FIG. 2 has a base body 1.2, which consists of commercially available carbon nanotubes with an addition of 20% by volume of tungsten carbide.
- the base body 1.2 is a depression corresponding to the course of the isotherms in the operating state according to patent application no. 10 2005 000 784 A1 introduced, which is filled by the X-ray active layer 2.2 made of tungsten with 5 mass% rhenium.
- the diffusion barrier layer 3.2 which is also the bonding layer 4.2, consists in this case of tantalum and has a thickness of 0.2 mm, is adapted to the shape of the depression and, like the X-ray active layer 2.2, corresponds in function to the corresponding layers 2.1; 3.1 and 4.1 of embodiment 1. The same applies to the geometric dimensions of the X-ray rotary anode plate.
- the preparation of the complete component with all the layers mentioned above takes place in this case after filling in a suitable mold in one operation by hot pressing by pulse current at 2400 0 C at a pressure of 40 MPa in a residual gas atmosphere of argon with a slight hydrogen content at a residual pressure of about 2 Pa.
- the final production takes place according to the usual procedures.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- An improvement in quality of the X-ray rotary anode plate produced according to Embodiment 2 is achieved as follows:
- the layer 2.2 is adjusted to the composition tungsten with 1 mass% rhenium.
- the disk bevel is cleanly ground and applied by vacuum plasma spraying an X-ray active layer of the composition tungsten with 5% by weight rhenium with a thickness of 200 microns.
- the final production takes place according to the usual procedures.
- Embodiment 4 is a diagrammatic representation of Embodiment 4:
- the X-ray rotary anode plate shown in section in Fig. 3 represents technologically and in terms of the manufacturing process, a transitional shape between a conventional X-ray rotary anode plate made of metal and the inventive solution, of course, all the necessary features of the invention are realized.
- the base body 1.3 beveled at the outer edge towards the axis corresponds in composition and technologically to the base body 1.1 of embodiment 1.
- This base body 1.3 is a finished metal body 5 made of a molybdenum-TZM alloy with an X-ray active layer 2.3 by diffusion bonding to the surface. 6 connected.
- the excellent strength properties of the base body 1.3 with a content of carbon nanotubes make it possible despite the intended high speeds and operating temperatures, the metal body 5 much thinner and easier to perform than in X-ray machines Drehanodentellern made of metal with a graphite base body after State of the art.
- the diameter of the X-ray rotary anode plate is, as in the embodiments 1 and 2, also 120 mm; the total thickness is different than in the aforementioned embodiments, a total of 16 mm, namely 6 mm of the metal body 5 plus 10 mm of the base body 1.3.
- Embodiment 5 is a diagrammatic representation of Embodiment 5:
- FIG. 4 shows a layered base body of an X-ray rotary anode plate according to claims 10 to 12, wherein the cross-sectional shape of the bonding layer 4.4 and the radiopaque layer 2.4, as in the above embodiments 2 and 3 according to claim 30, in turn, an isotherm of the temperature distribution in the vicinity of the X-ray active layer during the operating state.
- the layers of the base body From bottom to top, i. towards the X-ray-active layer, the layers of the base body have the following composition:
- Lower layer 1.41 single-walled carbon nanotubes and on average 30% silicon carbide by volume, the content of which within this layer preferably increasing from top to bottom.
- Upper layer 143 Single-walled carbon nanotubes with an average of 20% by volume of tungsten carbide, the content of which within this layer preferably increasing from top to bottom. Between these three layers 141, 142 and 143 are each 80 micron thick base body bonding layers of molybdenum carbide.
- a recess corresponding to the mentioned course of an isotherm is incorporated in the region of the focal path.
- a diffusion barrier layer 3.4 of 100 microns thick of 40% by volume tantalum carbide and 60 volume 5 niobium carbide.
- a bonding layer 4.4 made of molybdenum with 12% by weight of tungsten and finally the depression up to the level of the bevel filling up the half-active layer 2.4 made of tungsten with 6% by mass rhenium is arranged approximately to half the depth of the depression.
- the typical dimensions of such an X-ray rotary anode plate are for example: diameter: 120 mm, thickness of the layers 1.41 and 1.42 per 6 mm and the layer 1.43 8 mm.
- the width of the depression with the layers 3.4 and 4.4 and the X-ray active layer 2.4 is 35 mm and its maximum depth measured from the beveled surface of 6 mm.
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- X-Ray Techniques (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007047544 | 2007-10-02 | ||
| DE102008021551 | 2008-04-28 | ||
| PCT/DE2008/001629 WO2009043344A1 (de) | 2007-10-02 | 2008-10-01 | Röntgen-drehanodenteller und verfahren zu seiner herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2206136A1 true EP2206136A1 (de) | 2010-07-14 |
| EP2206136B1 EP2206136B1 (de) | 2013-03-27 |
Family
ID=40317029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08836274A Not-in-force EP2206136B1 (de) | 2007-10-02 | 2008-10-01 | Röntgen-drehanodenteller und verfahren zu seiner herstellung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8280008B2 (de) |
| EP (1) | EP2206136B1 (de) |
| JP (1) | JP2010541172A (de) |
| DE (1) | DE102008050716A1 (de) |
| ES (1) | ES2409579T3 (de) |
| WO (1) | WO2009043344A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009022082A1 (de) | 2009-05-19 | 2010-11-25 | Arno Cloos | Werkstoffe, welche Kohlenstoffnanoteilchen enthalten und deren Verwendung |
| WO2010133189A1 (de) * | 2009-05-19 | 2010-11-25 | Arno Cloos | Werkstoffe, welche kohlenstoffnanoteilchen enthalten und deren verwendung |
| US9053897B2 (en) | 2010-12-16 | 2015-06-09 | Koninklijke Philips N.V. | Anode disk element with refractory interlayer and VPS focal track |
| US9449782B2 (en) * | 2012-08-22 | 2016-09-20 | General Electric Company | X-ray tube target having enhanced thermal performance and method of making same |
| JP2014216290A (ja) * | 2013-04-30 | 2014-11-17 | 株式会社東芝 | X線管及び陽極ターゲット |
| US8942353B2 (en) | 2013-06-11 | 2015-01-27 | General Electric Company | Field assisted sintering of X-ray tube components |
| AT14991U1 (de) * | 2015-05-08 | 2016-10-15 | Plansee Se | Röntgenanode |
| KR102030813B1 (ko) * | 2018-03-28 | 2019-10-10 | 경북대학교 산학협력단 | 엑스선관 타겟, 이를 구비한 엑스선관, 및 상기 엑스선관 타겟의 제조 방법 |
| CN110797244B (zh) * | 2019-10-31 | 2022-11-04 | 西北核技术研究院 | 一种长寿命强流二极管复合阳极及其制作方法 |
Family Cites Families (27)
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| DE3238352A1 (de) | 1982-10-15 | 1984-04-19 | Siemens AG, 1000 Berlin und 8000 München | Roentgenroehren-drehanode |
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| JP2005276760A (ja) * | 2004-03-26 | 2005-10-06 | Shimadzu Corp | X線発生装置 |
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| JP2006164651A (ja) * | 2004-12-06 | 2006-06-22 | Hitachi Zosen Corp | X線発生用ターゲットおよびその製造方法 |
| DE102005034687B3 (de) * | 2005-07-25 | 2007-01-04 | Siemens Ag | Drehkolbenstrahler |
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| DE102005039188B4 (de) | 2005-08-18 | 2007-06-21 | Siemens Ag | Röntgenröhre |
| JP2007123022A (ja) * | 2005-10-27 | 2007-05-17 | Shimadzu Corp | X線源およびそれに用いられるターゲット |
| DE102006010232A1 (de) * | 2006-03-02 | 2007-09-06 | Schunk Kohlenstofftechnik Gmbh | Verfahren zur Herstellung eines Kühlkörpers sowie Kühlkörper |
-
2008
- 2008-10-01 EP EP08836274A patent/EP2206136B1/de not_active Not-in-force
- 2008-10-01 JP JP2010527322A patent/JP2010541172A/ja active Pending
- 2008-10-01 DE DE102008050716A patent/DE102008050716A1/de not_active Withdrawn
- 2008-10-01 ES ES08836274T patent/ES2409579T3/es active Active
- 2008-10-01 WO PCT/DE2008/001629 patent/WO2009043344A1/de not_active Ceased
- 2008-10-01 US US12/681,055 patent/US8280008B2/en not_active Expired - Fee Related
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| See references of WO2009043344A1 * |
Also Published As
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|---|---|
| US8280008B2 (en) | 2012-10-02 |
| EP2206136B1 (de) | 2013-03-27 |
| ES2409579T3 (es) | 2013-06-27 |
| US20100284520A1 (en) | 2010-11-11 |
| WO2009043344A1 (de) | 2009-04-09 |
| JP2010541172A (ja) | 2010-12-24 |
| DE102008050716A1 (de) | 2009-04-09 |
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