EP2740142B1 - Anode mit linearer haupterstreckungsrichtung - Google Patents

Anode mit linearer haupterstreckungsrichtung Download PDF

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Publication number
EP2740142B1
EP2740142B1 EP12775119.6A EP12775119A EP2740142B1 EP 2740142 B1 EP2740142 B1 EP 2740142B1 EP 12775119 A EP12775119 A EP 12775119A EP 2740142 B1 EP2740142 B1 EP 2740142B1
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EP
European Patent Office
Prior art keywords
anode
track layer
focal track
focal
anode body
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EP12775119.6A
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German (de)
English (en)
French (fr)
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EP2740142A1 (de
Inventor
Stefan Gerzoskovitz
Hannes LORENZ
Jürgen SCHATTE
Hannes Wagner
Andreas WUCHERPFENNIG
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Plansee SE
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Plansee SE
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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
    • H01J35/105—Cooling of rotating anodes, e.g. heat emitting layers or structures
    • H01J35/106—Active cooling, e.g. fluid flow, heat pipes
    • 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
    • H01J35/112—Non-rotating anodes
    • 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
    • H01J35/12—Cooling non-rotary anodes
    • 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
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/068—Multi-cathode assembly
    • 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
    • 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
    • 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
    • H01J2235/086—Target geometry
    • 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
    • H01J35/12—Cooling non-rotary anodes
    • H01J35/13—Active cooling, e.g. fluid flow, heat pipes

Definitions

  • the present invention relates to an anode with a linear direction of main extent for an X-ray device and a method for producing an anode with a linear direction of main extent for an X-ray device.
  • Anodes for X-ray devices are known in principle. They are used to emit X-rays by electron bombardment in conjunction with a cathode. Known anodes are used for this purpose in interaction with the cathode, for example in computer tomographs or luggage X-ray devices.
  • the known anodes of such X-ray devices are usually designed as a fixed standing anode with a focal spot or as a rotating anode with a focal track.
  • Standing anodes are used as fixed components to be bombarded with an electron beam and then to emit the desired X-ray radiation.
  • a focal path covering is provided, which is arranged rotating on a disk. Due to the rotation of the disk, only part of the focal path coating is hit by the electron beam, so that the remaining area of the focal path coating can cool down.
  • a disadvantage of known anodes for X-ray devices is that they necessitate a relatively complex construction if high resolution is to be achieved at high energies. Then either standing anodes or rotating anodes are necessary, such rotating anodes also being mechanically movable over a certain range in addition to the rotation.
  • a three-dimensional acquisition of x-ray images is particularly desirable, so that not only does the rotating anode itself move in a rotating manner, but the entire x-ray device must also be movable.
  • the mechanical components required for this, which are necessary for the relative movement, are very noisy in use and also prone to errors.
  • DE 28 22 241 discloses an anode comprising a gold or tungsten anode target mounted on a copper or silver anode support. This anode is not suitable for high power requirements.
  • an anode is also known in which, by moving the anode during a single exposure, the heat load is distributed over a larger area and in this way overheating of the anode is avoided.
  • the pamphlet DE 28 11 464 A1 discloses a circular anode in which the electron beam is guided in a circle around the object to be analyzed with X-ray radiation, as a result of which the local heat input can also be reduced. Due to the material used for the base body of the anode (copper), this anode is also not suitable for high-performance requirements.
  • the object of the present invention is to at least partially eliminate the above-described disadvantages of known anodes.
  • the object of the present invention is to provide an anode with a linear main extension direction for an X-ray device and a method for the production of such an anode, with the help of which long focal paths can also be achieved with high mechanical stability.
  • this goal should be achieved in a cost-effective and simple manner.
  • a linear main direction of extent is to be understood as meaning a direction of extent which runs along a straight line or along a curved line.
  • the anode can be designed essentially in the form of a bar, for example, with this bar having a cuboid design.
  • a cuboid that has a curvature over at least part of its course is also an anode with a linear main extension direction.
  • the anode is in particular a static anode which is not designed to rotate but may be movable. It therefore differs explicitly from a known rotary anode.
  • anode with a focal point, since a focal path covering is provided on the anode, which makes a large number of focal points available.
  • Such an anode can be used, for example, with a large number of cathodes, as can be made available, for example, by so-called carbon nanotubes (CNT).
  • CNT carbon nanotubes
  • the movable design of the anode is given in particular in the small frame, so that small compensation shifts or Angular changes of the anode can be generated by such mobility.
  • the bond can be achieved in different ways.
  • the focal path coating it is possible for the focal path coating to be designed to be directly integral with the focal path coating volume section. This would be achieved, for example, by melting the focal path coating on and off.
  • one or more layers it is also possible for one or more layers to achieve the desired material connection.
  • a soldered connection provides one or more such layers as a material connection. If more than one layer is used for the material connection, it is important that each of these layers is materially connected to the adjacent layer or to the focal path coating and/or the focal path coating volume section. In such a case, there would be a material connection cascade.
  • the focal path coating With an anode according to the invention, it is possible for the focal path coating to be designed in particular as a single focal path coating.
  • the configuration of the firing coating according to the invention is preferably in an unsegmented manner, so that a firing path coating of essentially any length can be created.
  • the length of the focal path coating is fundamentally not limited here. This is achieved by providing a base matrix of refractory metal for the burn sheet volume portion material. This means that a high melting point of the focal path coating volume section is accompanied by a high melting point of the focal path coating itself.
  • the thermal expansion coefficients of the focal path coating volume section and the focal path coating approach each other as a result of a design according to the invention.
  • the two are different Thermal expansion coefficients only very low, especially in percentage terms.
  • the coating of the focal path heats up as a result of the bombardment with electrons.
  • This heating leads to the heat being dissipated downwards, which also causes the volume section of the focal path covering underneath to heat up.
  • This heating is accompanied by a thermal expansion of the focal path coating and of the focal path coating volume section. Due to the configuration according to the invention, however, this respective thermal expansion is similar to one another or differs only slightly.
  • an anode By providing a material with at least one basic matrix of high-melting metal for the focal path coating volume section, an anode is made available whose differences in the thermal expansion between the focal path coating and the focal path coating volume section are only very small. Due to the small difference in thermal expansion, the resulting bond stress is also reduced. Since such bond stress can be seen as one of the reasons for bending of the anode, as well as tearing of the connection area between the focal path coating and the focal path coating volume section, this risk is reduced or minimized by the present invention. As a result of this reduction in the risk of tearing open and bending, a significantly longer extension of the focal path coating can be implemented in an anode according to the invention. Compared to known anodes, individual focal path coatings that are one or even several meters long can also be achieved with an anode according to the invention.
  • the difference in thermal expansion with respect to the material of the focal path coating and the material of the focal path coating volume section is less than 5 ⁇ 10 -6 1/K, in particular less than 2 ⁇ 10 -6 1/K.
  • the material of the focal track can, for example, comprise at least mainly molybdenum or tungsten.
  • it is a tungsten-based alloy.
  • Another component of such an alloy can be rhenium, for example.
  • the term "high-melting metal” means in particular a metal whose melting point is above 2000.degree.
  • the materials both for the focal path covering and for the focal path covering volume section, in particular its at least one basic matrix, are preferably recrystallized materials.
  • the cooling channel can be a simple bore, or else a more complex design. It is thus possible, for example, for the cooling channel to be delimited by a separate wall which is in contact with the anode body. It is also possible for such a tube to be made of a different material, such as copper or steel, for example, to form the wall. Of course, tubes made of materials that correspond to the material of the anode body, in particular of the volume section of the focal path coating, are also conceivable. It is also advantageous if the walls themselves are formed in one piece with the anode body and/or the volume section of the focal path coating.
  • An anode according to the invention can be developed in such a way that the anode body has a monolithic design.
  • a monolithic design is to be understood as meaning production from a single piece of material. In this way, a particularly compact and particularly dense production can be achieved, in particular with regard to the cooling channel. Furthermore no additional connection steps of individual components for the anode body have to be carried out.
  • the focal track coating volume section is a monolithic part of the anode body. In this case, despite the monolithic configuration, a different material configuration of the combustion path coating volume section can be provided in comparison to the rest of the anode body.
  • the part which has the volume section of the focal path coating and in which the cooling channel runs is a monolithic part.
  • a composite can be produced in this way that entails particularly low composite stresses.
  • quality control with regard to the possible types of connection between otherwise necessary individual components can be dispensed with.
  • the volume section of the focal path coating and the focal path coating consist of the same material.
  • the same material both for the focal path covering and for the focal covering volume section brings with it the advantage that there are no longer any differences, or essentially no differences, with regard to the thermal expansion coefficients of the two materials.
  • the two adjoining components, which are in a materially bonded connection with one another, are therefore free from differences in terms of their thermal expansion. Any bond stresses that may arise between these components therefore only result from possible temperature differences, which, however, are significantly lower than would be the case with different thermal expansion coefficients of different materials.
  • a temperature is substantially continuously distributed across the various components. Temperature kinks and thus expansion jumps between individual components are avoided in this way.
  • Such an embodiment can be described as a particularly advantageous, in particular as an ideal state.
  • the anode body essentially consists of a single material, namely the material of the volume section of the focal path coating.
  • the anode body can be manufactured either in a built-up manner and/or by machining by milling and/or drilling. In addition to manufacturing, an advantage is also achieved in use.
  • connection parts are preferably not formed monolithically, but are part of the anode body. They can also consist of the same material as the focal track coating volume section.
  • the focal path coating and the anode body are monolithic in an anode according to the invention.
  • all the materials of the focal path coating and the anode body are made of tungsten or have a tungsten-based alloy as the basic matrix.
  • This embodiment entails that focal path coating and anode body through the monolithic Embodiment produce the desired material connection and moreover preferably one and the same material is used for everything. In addition to the even further simplified production, this results in an ideal state with regard to the composite stresses occurring between the individual components, namely the volume section of the focal path coating, the rest of the anode body and the focal path coating itself.
  • the anode body is designed in at least two parts, with the individual parts extending along the main direction of extent of the combustion path coating and being connected to one another in a materially bonded manner.
  • curved anodes can be produced particularly cost-effectively, that is to say an anode which is oriented along a curved line along its main linear extension direction.
  • two half-shells can be manufactured, from the opposite contact surface of which a milling is carried out to create the cooling channel.
  • Alignment options for the individual components relative to one another are also possible in order to connect the individual anode body components to one another.
  • the connection is preferably made by a material-to-material method, such as a soldering or welding process.
  • the cooling channel is formed by at least two parts of the anode body. In this way an even freer geometry of the channel is possible.
  • the explicit position of the channel within the anode body, as well as the course of the cooling channel and possible variations in the cross section of the cooling channel are possible with this embodiment through appropriate control of the milling process during production of the cooling channel.
  • the cooling channel is designed to be vacuum-tight in the anode body.
  • the cooling channel is formed directly, so to speak.
  • An additional seal, such as separate hoses or pipes, is not required.
  • a post-processing to create the vacuum tightness can therefore stay away.
  • vacuum-tight means a cooling channel that has a helium leak rate of less than or equal to 1 ⁇ 10 -8 mbar/s according to the measurement method according to DIN EN 13185 according to the measurement methods of group A.
  • the cooling channel can be designed cost-effectively and directly in order to carry a cooling fluid.
  • additional connection options such as connection sockets, are also to be provided in order to introduce the coolant into the cooling channel in the desired manner, or to remove it again from this cooling channel.
  • the anode body has an acute-angled side surface, at least in the region of the volume section of the focal path coating, on which the focal path coating is at least partially arranged.
  • the acute-angled position enables an even better arrangement in the X-ray apparatus.
  • the connection in the X-ray device can be freely selected in this way, since the alignment of the focal path coating takes place through the acute-angled positioning of the side surface.
  • the alignment of the acute angle is preferably such that when the anode is arranged in the x-ray device, the x-ray radiation emerges with the highest intensity in the desired direction. In particular, this is the case in the range from 7 to 15° starting from the focal path coating.
  • a bond that is designed to be tungsten-based or molybdenum-based is to be understood in particular as a bond with another metal.
  • the other metal can, for example, be a metal with high thermal conductivity, such as copper.
  • pores in a tungsten base matrix or a molybdenum base matrix or a high-melting metal of a different type are used as the base matrix in order to be filled with another metal.
  • heat conduction channels can be created in this way, which enable improved heat dissipation from the focal path coating to the cooling channel.
  • the basic matrix of the refractory metal has the advantages that have already been described in the introduction to this invention with regard to less bending and the reduction in the risk of tearing open the material connection between the volume section of the focal path coating and the focal path coating.
  • the pore sizes in a composite are preferably between 2 and 100 ⁇ m, in particular between 2 and 50 ⁇ m. Such a pore size serves to ensure that adequate heat dissipation is possible through correspondingly embedded metals, and at the same time the necessary heat resistance with regard to the melting point and with regard to the thermal expansion coefficient is achieved.
  • a maximum of one intermediate layer is arranged for producing the integral connection between the combustion path coating and the combustion path coating volume section.
  • This intermediate layer is bonded both to the focal path coating and to the focal path coating volume section.
  • a materially connected intermediate layer is solder. This establishes the material connection to the focal path covering as well as to the focal path covering volume section by means of a soldering process.
  • At least one wall section of the cooling channel is aligned parallel or essentially parallel to the focal path coating.
  • the wall section of the cooling channel runs at least in sections along the main direction of extent of the anode.
  • the distance of at least this wall section of the cooling channel from the focal path covering section is kept essentially constant over the width and over the length of the focal path covering. It is thus ensured that a substantially constant removal of heat from the focal path covering is made possible over the entire course of the focal path covering. This is to avoid isolated heat islands to ensure that the burn sheet allows for constant and substantially continuous aging in use over the entire history of the burn sheet.
  • the cooling channel can have different configurations. In particular with regard to its free flow cross section, it must be adapted to the need for the fluid flow of the cooling fluid. Both round, semi-circular, rectangular, as well as square or other shaped opening cross-sections for the Cooling channel conceivable. In addition to the necessary flow conditions in the interior of the cooling channel, consideration should preferably also be given to the corresponding manufacturing processes to be used.
  • the channel As an alternative to a completely parallel design of the channel, it is also possible for the channel to run along the length of the focal path coating at an ever-decreasing distance. Since the cooling fluid in the interior of the cooling channel absorbs heat over the course of the cooling channel, the heat difference will decrease in the course of the cooling channel to the focal path coating. In order to still achieve essentially constant cooling or an essentially constant temperature for the focal path covering, a substantially constant temperature of the focal path covering can be achieved by varying the degree of heat dissipation by varying the distance between the cooling channel and the focal path covering.
  • the cooling channel of the anode is designed for the direct conduction of a cooling fluid.
  • the cooling fluid is preferably a liquid.
  • the channel is therefore designed to be correspondingly tight, in particular liquid-tight, so that an additional seal is no longer necessary.
  • an internal hose or an internal pipe can be prevented in this way.
  • the reduction in complexity brings with it cost advantages in production and in the selection of materials.
  • possible bond stresses between additionally required materials of the otherwise additionally required seals are avoided in this embodiment.
  • the wall of the cooling channel is therefore already part of the anode body or part of the volume section of the focal path coating.
  • the focal path coating has a length that is greater than twice the width of the focal path coating.
  • lengths of 20 to 1500 mm are advantageous.
  • the large lengths of more than one meter for a focal path coating are advantageous, since a particularly large anode can be produced according to the present invention, despite the manufacturing effort.
  • anodes according to the present invention can enable a particularly large area for X-ray monitoring or the generation of X-ray images.
  • a computer tomograph which is intended to generate 360° circumferential X-ray images in three-dimensional imaging methods, it is sufficient, for example, if four such anodes according to the invention, each curved by 90°, cover the circumferential circumference of such a computer tomograph.
  • the necessary intersections or overlaps at the joints between the individual anodes are thus minimized, so that higher resolutions can be achieved with the anode being manufactured more cost-effectively at the same time.
  • the width of a focal track covering according to the invention is, for example, 10 to 20 mm.
  • the factors relating to the length of the focal path coating are preferably greater than twice the width, in particular greater than five times the width, preferably greater than ten times the width of the focal path coating.
  • the main advantages of the present invention are obtained when the length of the focal liner is one hundred or even one hundred and fifty times the width of the focal liner.
  • a further subject matter of the present invention is a method for producing an anode with a linear main extension direction for an X-ray device, having the steps as defined in claim 12.
  • This method is used in particular to produce an anode according to the invention.
  • a curvature can be created during the formation of a cooling duct according to the invention, such that an anode with a linear skin extension can also be achieved with a method according to the invention, with the skin extension direction extending along a straight line or along a linear curvature.
  • Further connecting parts can then be carried out, for example, by means of a material-to-material method, or together during the material-to-material connection of at least the focal path covering.
  • Such connection parts are, for example, connection sockets for the cooling fluid or sealing plugs for openings in the anode body.
  • FIG 1 a first embodiment of an anode according to the invention -10- is shown in schematic cross section. It is easy to see here that this embodiment is an anode body -20- with two parts -20a- and -20b-.
  • the first part -20a- of the anode body -20- has the focal path coating volume section -22-.
  • the focal path covering -30- is integrally connected to this focal path covering volume section -22-.
  • a single intermediate layer -50- is provided between the focal path covering -30- and the focal path covering volume section -22-. This single intermediate layer -50- is designed as a solder layer and is cohesively connected both to the focal path covering -30- and to the focal path covering volume section -22-.
  • both the intermediate layer -50- and the focal path coating -30- are accommodated in a recessed manner in the anode body -20-, in particular the first part -20a- of the anode body -20-. Since the focal path covering -30- is under very high electrical voltage, the recessed arrangement prevents a voltage flashover, ie an arc, at the edges of the focal path covering -30-.
  • the cooling channel -40- is formed between the two parts -20a- and -20b- of the anode body -20-. Later, such training with reference to the Figures 2a, 2b and 2c explained in more detail.
  • the cooling channel -40- is for connection to a Provide external coolant supply with a connection -60-.
  • This connection -60- is an inserted socket which is connected to at least one or both parts -20a- and -20b- of the anode body -20-, for example by means of a material connection method.
  • This integral connection is also achieved in particular by a soldering process.
  • the connection -60- can also protrude in other directions in other geometries, for example leading into the cooling channel -40- from below. In this case, an application-specific alignment is carried out in particular, so that the connection -60- is set with reference to the space requirement when using the anode -10- according to the invention.
  • the Figures 2a to 2c show three different variants of how the anode body -20- can be assembled to form the cooling channel -40-. All of these variants have in common that, as in the embodiment of figure 1 , the focal path coating -30- is connected to the focal path coating volume section -22- via a single intermediate layer -50.
  • the anode body -20- in all of these three variants is in each case constructed in several parts, in particular in two parts, from a first part -20a- and a second part -20b-.
  • the cooling channel is formed through both parts -20a- and -20b- of the anode body -20-.
  • the cooling channel -40- has a round flow cross section, so that a semicircular free cross section is formed in the respective part -20a- and -20b- of the anode body -20-.
  • the first part -20a- is preferably made entirely of the material of the volume section of the focal path coating, ie in particular a tungsten-based or molybdenum-based alloy.
  • the second part -20b- of the anode body -20-, which terminates below the cooling channel can also be made of a less expensive material, for example stainless steel or copper.
  • FIG 2b a two-piece embodiment of the anode body -20- is shown.
  • the cooling channel -40- is formed only in the lower part -20b- of the anode body -20-.
  • This has the advantage that a cutting Processing or other training of the cooling channel -40- only has to take place in one of the two parts -20a- and -20b- of the anode body -20-. This reduces the vertical range of manufacture for such an anode according to the invention -10-.
  • the first part -20a- is placed on the second part -20b-.
  • the two parts -20a- and -20b- of the anode body -20- are bonded to one another, for example by a soldering process.
  • the cooling channel -40- is designed to be essentially completely vacuum-tight, so that it can be used directly, that is to say without the further introduction of an additional tube as a wall, for conveying cooling fluid.
  • Figure 2c shows an embodiment of an anode -10- according to the invention, in which the cooling channel -40- has a semi-circular cross-section.
  • the focal track coating volume section -22- is essentially equal to the first part -20a- of the anode body -20-.
  • the two parts -20a- and -20b- are bonded to one another, so that a vacuum-tight closure of the cooling channel -40- is achieved.
  • the refractory metal is reduced to a minimum in terms of volume expansion, at least as the basic matrix for the focal path covering volume section -22-. Accordingly, this also reduces the correspondingly necessary costs for the entire anode -10- since, for example, a less expensive material can be used for the second part -20b-.
  • FIG 3 a further embodiment of an anode according to the invention -10- is shown.
  • This embodiment differs from figure 1 in that the cooling channel -40- is not only designed to be narrower, but also in relation to the focal path coating -30-, this focal path coating -30- approaches. Cooling fluid, which enters the cooling channel -40- through the connection -60-, will therefore minimize the distance to the focal path coating -30- to be cooled over the course of the cooling channel -40-. Poor heat dissipation will thus take place at the beginning and improved heat dissipation at the end of the cooling channel -40-. Since that Cooling fluid is heated over the course of the cooling channel -40-, a constant or essentially constant temperature of the combustion path covering -30- can be achieved with this configuration.
  • FIGS. 5a to 5c describe two variants of the production of an anode according to the invention.
  • the respective focal path coating -30- and the intermediate layer -50- are applied to a side surface of the anode body -20-.
  • both the intermediate layer -50- and the focal path coating -30- are in a depression, so that the edges of the focal path coating -30- and the intermediate layer -50- are not visible in the real product are to avoid an unwanted electric arc.
  • the Figures 4a to 4d show a variant of the production of an anode body -20-, which has a substantially monolithic embodiment.
  • the anode body -20- is manufactured from an essentially ingot-shaped piece of high-melting metal.
  • the corresponding side surfaces are machined and one side surface, which also at least partially forms the focal path coating volume section -22-, is set at an acute angle by milling.
  • the cooling channel -40- is produced, for example, by machining in the form of using a drilling process.
  • the intermediate layer -50- in the form of a solder and the focal path covering -30- can be placed on the focal path covering volume section -22-, so that the material-to-material connection is produced according to the invention by the material-to-material connection method, a soldering process.
  • a curvature can then also be created.
  • a curved side surface of the anode body -20- can be seen, so that a curved embodiment of the focal path coating -30- and the intermediate layer -50- is the result.
  • full-circumferential images of an X-ray device such as in a computer tomograph or in a luggage scan tube, can be made possible by an anode -10- insert according to the invention.
  • the Figures 5a to 5c show a variant in which a multi-part embodiment of the anode body -20- is used for the production of the anode -10-.
  • the respective part -20a- and -20b- of the anode body -20- can be prefabricated separately, so that, for example, by milling as a machining operation, the cooling channel -40- in the individual parts -20a- and -20b- of the anode body - 20- can be trained.
  • the individual parts are then assembled, so that the anode body -20- is produced by a cohesive connection of the parts -20a- and -20b-.
  • the Figure 5c shows the final step at which, similar to Figure 4c , the focal path covering -30- and the intermediate layer -50- are placed and formed for the material connection.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • X-Ray Techniques (AREA)
EP12775119.6A 2011-08-05 2012-08-02 Anode mit linearer haupterstreckungsrichtung Active EP2740142B1 (de)

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ATGM446/2011U AT12862U1 (de) 2011-08-05 2011-08-05 Anode mit linearer haupterstreckungsrichtung
PCT/AT2012/000204 WO2013020151A1 (de) 2011-08-05 2012-08-02 Anode mit linearer haupterstreckungsrichtung

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EP (1) EP2740142B1 (enrdf_load_stackoverflow)
JP (1) JP6411211B2 (enrdf_load_stackoverflow)
KR (1) KR101919179B1 (enrdf_load_stackoverflow)
CN (1) CN103733297B (enrdf_load_stackoverflow)
AT (1) AT12862U1 (enrdf_load_stackoverflow)
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US9992917B2 (en) 2014-03-10 2018-06-05 Vulcan GMS 3-D printing method for producing tungsten-based shielding parts
US10401309B2 (en) 2014-05-15 2019-09-03 Sigray, Inc. X-ray techniques using structured illumination
AT14991U1 (de) 2015-05-08 2016-10-15 Plansee Se Röntgenanode
US10247683B2 (en) 2016-12-03 2019-04-02 Sigray, Inc. Material measurement techniques using multiple X-ray micro-beams
WO2018175570A1 (en) 2017-03-22 2018-09-27 Sigray, Inc. Method of performing x-ray spectroscopy and x-ray absorption spectrometer system
CN107481912B (zh) * 2017-09-18 2019-06-11 同方威视技术股份有限公司 阳极靶、射线光源、计算机断层扫描设备及成像方法
US10578566B2 (en) 2018-04-03 2020-03-03 Sigray, Inc. X-ray emission spectrometer system
WO2019236384A1 (en) 2018-06-04 2019-12-12 Sigray, Inc. Wavelength dispersive x-ray spectrometer
CN112470245B (zh) 2018-07-26 2025-03-18 斯格瑞公司 高亮度x射线反射源
US10656105B2 (en) 2018-08-06 2020-05-19 Sigray, Inc. Talbot-lau x-ray source and interferometric system
CN112638261B (zh) 2018-09-04 2025-06-27 斯格瑞公司 利用滤波的x射线荧光的系统和方法
US11056308B2 (en) 2018-09-07 2021-07-06 Sigray, Inc. System and method for depth-selectable x-ray analysis
US11152183B2 (en) 2019-07-15 2021-10-19 Sigray, Inc. X-ray source with rotating anode at atmospheric pressure
US11749489B2 (en) 2020-12-31 2023-09-05 Varex Imaging Corporation Anodes, cooling systems, and x-ray sources including the same
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FR3132379A1 (fr) * 2022-02-01 2023-08-04 Thales Procédé de fabrication d'une anode pour une source à rayons x de type cathode froide
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WO2013020151A1 (de) 2013-02-14
AT12862U1 (de) 2013-01-15
EP2740142A1 (de) 2014-06-11
CN103733297B (zh) 2016-12-28
JP6411211B2 (ja) 2018-10-24
CN103733297A (zh) 2014-04-16
JP2014524635A (ja) 2014-09-22
US9564284B2 (en) 2017-02-07
KR20140088071A (ko) 2014-07-09
US20140211924A1 (en) 2014-07-31

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