135results about "Electrode assembly manufacture" patented technology

The invention discloses a pre-detection system and a pre-detection method for an electronic gun. The pre-detection system comprises a deflection lens cone, a measurement lens cone and a control module, the measuring lens cone and the deflection lens cone are respectively and electrically connected with the control module; during pre-detection, the to-be-detected electron gun lens cone is installed right above the deflection lens cone, and the control module is electrically connected with the electron gun lens cone. The control module is used for controlling the electron gun to emit an electron beam and controlling the electron beam to deflect in a first direction and a second direction through the deflection lens cone, so that the electron beam performs point-by-point scanning on a first scanning range; an electron beam collecting device in the measuring barrel lens is used for collecting a current value corresponding to each scanning point, and the control module is further used for generating a grayscale image based on the current values and adjusting the position of the electron gun according to the position of a hot spot in the grayscale image until the center of the hot spot coincides with the center of the image. The maintenance efficiency of the electron microscope equipment can be improved, the maintenance difficulty is reduced, and the downtime is shortened.

SOLUTION: To joint vacuum electronic devices (VEDs) having a plurality of two-dimensional layers formed of different materials and create at least one VED at the same time, a two-dimensional material layer being mechanically processed to include features necessary for device operations to form features of a three-dimension when the two-dimensional material layer is assembled and is joined and becomes a three-dimensional structure and the two-dimensional layers being joined together to have a structure similar to a sandwich.EFFECT: This manufacturing step makes it possible to built in a metal material, a magnetic material, a ceramic material, and other materials which are necessary to manufacture a VED while maintaining a required positional accuracy and a large number of devices for a batch capacity.SELECTED DRAWING: Figure 1

A magnet array holder configured to hold a magnet piece and / or a non-magnet piece to form a magnet array, the magnet array configured to manipulate one or more electron beams in a vacuum electronic device when assembled, the magnet array holder comprising: a set of slots configured to receive the magnet piece and / or the non-magnet piece; a set of pockets for accommodating the magnetic and / or non-magnetic parts; and one or more attachment interfaces configured to couple the magnet array holder to the vacuum electronic device.

The invention discloses an electrode assembly for a high-power pulse xenon lamp and a preparation method of the electrode assembly, and aims to overcome the technical defects that a traditional electrode is large in mass and poor in reliability and stability. The electrode assembly is mainly composed of an electrode tip, an electrode stem and a lead seat which are made of cerium-tungsten alloy, niobium and stainless steel. The electrode tip and the electrode rod are stably connected in a mode of combining brazing with interference connection, and the electrode rod and the lead seat adopt a multi-connection structure of brazing, threaded mechanical connection and micro interference connection; the assembled electrode assembly is subjected to degassing, brazing connection and electrode activation treatment at a time in a high-temperature and high-vacuum environment, and the problem of electrode material pollution caused by repeated heating is effectively avoided. The electrode assembly is simple in overall structure, reliable in preparation, excellent in current passing ability, capable of bearing impact force under extreme working conditions and outstanding in burning loss resistance, reliability and stability are remarkably improved, and the long-term stable working requirement and large-scale mass production of the high-power pulse xenon lamp are met.

A stable pharmaceutical formulation or suspension has a pharmaceutical active agent, agave, and a dilutant. The formulation or suspension has viscosity suitable for drinking.

Vacuum electron devices (VEDs) having a plurality of two-dimensional layers of various materials are bonded together to form one or more VEDs simultaneously. The two-dimensional material layers are machined to include features needed for device operation so that when assembled and bonded into a three-dimensional structure, three-dimensional features are formed. The two-dimensional layers are bonded together into a sandwich-like structure. The manufacturing process enables incorporation of metallic, magnetic, ceramic materials, and other materials required for VED fabrication while maintaining required positional accuracy and multiple devices per batch capability.

The present invention provides a lower electrode assembly, a mounting method thereof and a plasma processing device in which the lower electrode assembly is located. The gap between the dielectric ring and the base is divided into two or more gaps by cooperating with the dielectric ring and the base, and a protective ring is arranged between the dielectric ring and the base, and a protective layer is arranged on the outer side of the base, so as to avoid the plasma above the substrate and the focusing ring from leaking into the gap between the base and the edge ring assembly, prevent the plasma from corroding the base, reduce the possibility of arc discharge in the lower electrode assembly, and effectively ensure the safety of the use of the lower electrode assembly.

The utility model discloses an automatic threading machine which comprises a machine table, a molybdenum wire storage mechanism, a vertical frame and a double-shaft transfer platform are sequentially arranged on the upper surface of the machine table, a threading receiving arm and a threading arm which are perpendicular to each other are arranged on the vertical frame, a lead screw is arranged on one side of a lifting guide rod, the upper end of the lead screw is rotatably connected with the lifting guide rod in a penetrating mode, and a gear is fixedly installed at the upper end of the lead screw. A fixing plate is fixedly installed on the side face of the fixing platform, an air cylinder is fixedly installed on the fixing plate, the air cylinder is in driving connection with a telescopic rod, a guide wire lifting table is fixedly installed at the lower end of the telescopic rod, a guide wire nozzle is arranged in the middle of the guide wire lifting table, and the guide wire nozzle is arranged on the guide wire hollow needle in a sliding and sleeving mode. The guide wire hollow needle head is assisted in vertically descending, the stability and accuracy of the guide wire of the guide wire hollow needle head are improved, the automation degree is high, and manual operation is reduced.

The invention discloses an electric field deflector, a preparation method thereof and an electric field deflection control system, relates to the field of semiconductors, and is used for realizing high-precision control of electron beams. The electric field deflector comprises a substrate, a dielectric layer arranged on one side of the substrate, a first signal interconnection lead connected with the ground electrode, a second signal interconnection lead connected with the signal electrode, a first deflection electrode and a second deflection electrode, wherein the first signal interconnection lead and the second signal interconnection lead are located in the dielectric layer and are connected with the ground electrode, and the first deflection electrode and the second deflection electrode are oppositely arranged. The first deflection electrode is electrically connected with the first signal interconnection lead, and the second deflection electrode is electrically connected with the second signal interconnection lead; the first shielding layer is connected with the first deflection electrode; the particle beam channel penetrates through the area between the first deflection electrode and the second deflection electrode, the part, located between the first signal interconnection lead and the second signal interconnection lead, of the dielectric layer, the first shielding layer and the substrate in the second direction; the second direction is vertical to the substrate; the electric field deflector is used for electric field deflection control of the charged particle beam.

The invention discloses a method for simply and rapidly installing a dynode of an electron multiplier, and belongs to the field of electron multiplier assembly. According to the method, extra tools are not needed, and only three long screws and a pair of pointed tweezers need to be additionally used. According to the method, the problem that time and labor are wasted when the ceramic plate of the multiplier and nine dynodes are folded and aligned is solved, and the installation of the dynodes can be effectively accelerated. During installation, the three long screws are inserted into the through holes of the ceramic plate bottom plate, then the screws are sleeved with the limiting stainless steel cylinders respectively, then the nine dynodes and the collecting plate are sequentially installed on the ceramic plate bottom plate, then the ceramic plate top plate is sleeved with the three screws, the hexagonal studs are screwed, and the ceramic plate top plate is installed on the ceramic plate bottom plate. And the distance between the top and bottom ceramic plates is about 4mm longer than that of the limiting stainless steel cylinder. The nine dynodes and the collecting plate are sequentially stirred through pointed tweezers, the upper feet of the dynodes and the collecting plate enter the small mounting holes corresponding to the top plate of the ceramic plate, the lower feet of the dynodes do not leave the small mounting holes corresponding to the bottom ceramic plate, and the top ceramic plate and the bottom ceramic plate are tightened after completion. And the long screws are replaced by the original screws of the multiplier in sequence, and the dynode is assembled.

Vacuum electron devices (VEDs) are produced having a plurality of two-dimensional layers of various materials that are bonded together to form one or more VEDs simultaneously. The two-dimensional material layers are machined to include features needed for device operation so that when assembled and bonded into a three-dimensional structure, three-dimensional features are formed. The two-dimensional layers are bonded together using brazing, diffusion bonding, assisted diffusion bonding, solid state bonding, cold welding, ultrasonic welding, and the like. The manufacturing process enables incorporation of metallic, magnetic, and ceramic materials required for VED fabrication while maintaining required positional accuracy and multiple devices per batch capability. The VEDs so produced include a combination of magnetic and electrostatic lenses for electron beam control.

The present application relates to coaxial reflection triode and its assembling method, specifically relates to a kind of coaxial virtual cathode reflection triode array and its assembling method, solve the pulse hard X-ray utilization efficiency of plane type reflection triode is lower, application exists limitation, it is difficult to realize series connection, or the technical problems, such as the structure of coaxial reflection triode is complex, pulse hard X-ray utilization efficiency is lower.The present application is based on the coaxial reflection triode to remove the inner cathode, in the working process, electron passing through anode foil forms virtual cathode in the inside of anode;Through the circular hole of anode foil and suspension electrode installed on anode pedestal, and the circular hole of anode foil and ground cathode installed on suspension electrode, form two-stage series-connected triode array;Array arrangement is used to adjust radiation field distribution, improve the utilization efficiency of pulse hard X-ray;Through series connection work, it can be applied to large high-voltage pulse source, further improve the radiation intensity of pulse hard X-ray.

The present disclosure relates to a brazing structure. The brazing structure may comprise a first portion and a second portion. At least one of the first portion or the second portion may include a connection-reinforcing surface. The connection-reinforcing surface may include a groove region and a filler placement region. The filler placement region may be configured to hold a filler material in solid state before brazing. The groove region may include a plurality of grooves where the filler material flows into after being melted. The first portion and the second portion may be connected by a braze joint formed by the filler material.

The present application relates to the technical field of mechanical equipment, disclose a kind of magnetron anode antenna's correction device.Correction device includes fixed frame, workbench and correction component;Correction component includes rotary drive structure and multiple clamping correction structures, rotary drive structure is slidably arranged on the side of fixed frame, multiple clamping correction structures are rotatably arranged on rotary drive structure, and each anode cylinder is coaxially arranged with each clamping correction structure, and clamping correction structure is used to clamp and correct the antenna, so that the antenna is concentrically arranged with the anode cylinder;Rotary drive structure drives clamping correction structure to drive antenna to rotate to eliminate the stress after antenna correction.By setting multiple clamping correction structures, the correction device can not only be one-to-one correction, but also multiple anode components can be corrected simultaneously, to improve work efficiency and versatility.

The application belongs to the technical field of X-ray tubes, and discloses an anode assembly and a processing method thereof. The anode assembly comprises a molybdenum reflector, a molybdenum rotor assembly and an intermediate layer. The intermediate layer is made of metal material and is arranged between the molybdenum reflector and the molybdenum rotor assembly by using the processing method. In the heating process, the intermediate layer can effectively absorb and buffer thermal stress and shrinkage stress generated from the molybdenum components on both sides due to heating and cooling through plastic deformation of the intermediate layer, thereby greatly reducing the risk of micro-cracks caused by stress concentration. Moreover, since the chemical affinity of the intermediate layer to impurity atoms is higher than that of molybdenum material, in a protective atmosphere or a vacuum environment, the intermediate layer can be ensured to preferentially react with the harmful impurities in the interface area during the welding process to form stable compounds, thereby preventing the impurities from segregating at the grain boundaries of molybdenum, significantly improving the microstructure and toughness of the molybdenum heat-affected zone, and enhancing the anti-grain boundary cracking ability.

Apparatus and methods are disclosed for a mechanically stable, long-life junction between hexaboride-containing and tantalum-containing components. Examples are used as a cold field emitter assembly which is compatible with ultra-high vacuum and occasional high-temperature flashing. A metal adapter is welded to a hexaboride electrode. Some embodiments use a tantalum adapter and a LaB6 microrod electrode with a nanorod emitter tip. Other material combinations are disclosed, as also usage in electron sources for electron microscopes. In variations, the adapter is deposited onto a filament and the electrode then welded to the adapter.

A system and method of texturing a surface of an X-ray tube component, which comprises applying laser radiation to the surface of the X-ray component to remove material from the surface of the X-ray tube component by producing a pattern of varying structures on the surface of the X-ray tube component to improve the emissivity of the X-ray tube component.

The invention discloses a planar micro-nano vacuum diode based on a self-packaging vacuum channel. The diode comprises a substrate and a hyperbolic nanostructure, the hyperbolic nanostructure is arranged on the upper surface of the substrate, and the hyperbolic nanostructure comprises a nano micro-tip cathode, a nano micro-tip anode, a self-packaging oxide layer and a vacuum channel; the nanometer micro-tip cathode and the nanometer micro-tip anode are located on a first straight line, and a gap between the tip of the nanometer micro-tip cathode and the tip of the nanometer micro-tip anode is a vacuum channel; and the self-packaging oxide layer wraps the nano micro-tip cathode, the vacuum channel and the nano micro-tip anode. The diode has the characteristic that the diode does not depend on a high-vacuum-degree environment.

A field emission cathode device includes a cathode element having a field emission surface and an adjacent gate electrode element defining a first gap therebetween. A gate voltage applied to the gate electrode element causes the field emission surface to emit electrons that are accelerated through the gate electrode element. The gate electrode element is disposed between the cathode element and an anode element, the anode element having an anode voltage applied thereto to attract the electrons emitted through the gate electrode element. A tuning electrode element is disposed between the gate electrode element and the anode element. The tuning electrode element has a tuning voltage applied thereto to decelerate the electrons directed through the gate electrode element and to direct the electrons therethrough toward the anode element. An associated method of forming a field emission cathode device is also provided.

The invention provides a flat plate X-ray source and a manufacturing method thereof. The flat plate X-ray source comprises a flat plate cathode and a flat plate anode which are oppositely arranged, the flat plate cathode comprises a first substrate, a conductive layer and a cathode emission layer which are sequentially laminated, the conductive layer comprises a plurality of conductive strips which are arranged in parallel at intervals, the cathode emission layer is deposited on the conductive strips, and the conductive strips are mutually insulated; the flat anode comprises a second substrate and a target material layer which are laminated in sequence, the target material layer comprises a plurality of target material strips which are arranged in parallel at intervals, the target material strips are mutually insulated, the target material strips are perpendicular to the conductive strips, and the projections of the target material strips on the first substrate and the conductive strips have overlapped areas. Each point source of the flat plate X-ray source can be independently controlled, namely, the emission area of the flat plate X-ray source is selectable, and only the area of interest can be irradiated under control, so that the radiation dose of a patient is remarkably reduced, and high-quality and high-contrast X-ray images can be obtained at a low dose level.

To create a VED having a plurality of two-dimensional layers formed of different materials which are joined together to form at least one vacuum electronic device (VED) at the same time.SOLUTION: A two-dimensional material layer is mechanically processed to include features necessary for device operations to form features of a three-dimension when the two-dimensional material is assembled and is joined and becomes a three-dimensional structure. The two-dimensional layers are joined together using techniques such as brazing, diffusion bonding, assisted diffusion bonding, solid-state bonding, cold welding, and ultrasonic welding. This manufacturing step makes it possible to built in a metal material, a magnetic material, and a ceramic material which are necessary to manufacture a VED while maintaining a required positional accuracy and a large number of devices for a batch capacity. The thus formed VED includes a combination of a magnetic lens and an electrostatic lens for controlling electron beams.SELECTED DRAWING: Figure 1

A field emission cathode device and method for forming a field emission cathode device involve a cathode element having a field emission surface, and a gate electrode element disposed in spaced-apart relation to the field emission surface of the cathode element so as to define a gap therebetween, with the gate electrode element having a plurality of parallel grill members or a mesh structure laterally-extending between opposing anchored ends. A film element laterally co-extends and is engaged with the gate electrode element, with the film element being arranged to allowed electrons emitted from the field emission surface of the cathode element to pass therethrough, and to cooperate with the gate electrode element and the cathode element to form a substantially uniform electric field within the gap and about the field emission surface.

The present invention provides a method for welding a cathode heat shield assembly of an electron gun, wherein the cathode heat shield assembly includes a heat shield tube, a cathode assembly, and a heater assembly. The cathode assembly includes a cathode tube, a cathode cake, and a cathode support tube sleeved around the outer circumference and lower end of the cathode tube, wherein a heater passage hole is formed at the bottom of the cathode support tube. The welding method for the cathode heat shield assembly includes the following steps: a pressing step: applying pre-pressure to the cathode tube and the cathode support tube to compress the contact surfaces of the cathode tube and the cathode support tube to form a conductive path; a resistance welding step: applying power to the cathode tube and the cathode support tube to form a molten core at the connection between the cathode tube and the cathode support tube; and a power-off forging step: stopping power to the cathode tube and the cathode support tube and maintaining pressure between the cathode tube and the cathode support tube to allow the molten core to cool and crystallize. Through the above welding method, sufficient bonding force between the cathode tube and the cathode support tube is ensured, and the electron emission effect of the cathode is improved.

SOLUTION: To joint vacuum electronic devices (VEDs) having a plurality of two-dimensional layers formed of different materials and create at least one VED at the same time, a two-dimensional material layer being mechanically processed to include features necessary for device operations to form features of a three-dimension when the two-dimensional material layer is assembled and is joined and becomes a three-dimensional structure and the two-dimensional layers being joined together to have a structure similar to a sandwich.EFFECT: This manufacturing step makes it possible to built in a metal material, a magnetic material, a ceramic material, and other materials which are necessary to manufacture a VED while maintaining a required positional accuracy and a large number of devices for a batch capacity.SELECTED DRAWING: Figure 1

Vacuum electron devices (VEDs) having a plurality of two-dimensional layers of various materials are bonded together to form one or more VEDs simultaneously. The two-dimensional material layers are machined to include features needed for device operation so that when assembled and bonded into a three-dimensional structure, three-dimensional features are formed. The two-dimensional layers are bonded together into a sandwich-like structure. The manufacturing process enables incorporation of metallic, magnetic, ceramic materials, and other materials required for VED fabrication while maintaining required positional accuracy and multiple devices per batch capability.

An X-ray tube according to an embodiment includes a periphery that keeps the inside in vacuum, an anode target that generates X-rays by collision of hot electrons, and a cathode electron gun that emits the hot electrons to the anode target, and includes a periphery assembly that has a metal cylindrical support body fixing portion and constitutes the periphery, and a cathode assembly that has a metal support body that holds the cathode electron gun at a front end portion, and in the support body fixing portion, the support body of the cathode assembly is fixed at an inner peripheral side by welding.

The invention provides a method for preparing a multi-layer composite anode matrix by diffusion bonding, which comprises the following steps of: designing and processing according to the shape requirement of the composite anode matrix to obtain a basic component of the composite anode matrix, and then carrying out sheath forming, hot isostatic pressure diffusion bonding treatment, machining and high-temperature exhaust treatment to obtain a finished product of the composite anode matrix. The preparation method is high in production efficiency, and the prepared composite anode matrix has the advantages of being high in high-temperature strength and high in dynamic balance precision.

An electron gun device (10), in particular for an X-ray tube (12), is proposed, comprising: a metallic first electrode (14) having a first electrode contact surface (16); a metallic second electrode (18) having a second electrode contact surface (20); and a ring-shaped ceramic insulator (22) having a first insulator contact surface (24) on a first side with respect to an axial direction (26) of the insulator (22) and a second insulator contact surface (28) on an opposite second side with respect to the axial direction (26), wherein, in an assembled state, the first insulator contact surface (24) faces the first electrode contact surface (16) and is connected to the first electrode contact surface (16) via a first brazing joint (30), and the second insulator contact surface (28) faces the second electrode contact surface (20) and is connected to the second electrode contact surface (20) via a second brazing joint (32).

Apparatus and methods are disclosed for a mechanically stable, long-life, cold field emitter assembly which is compatible with ultra-high vacuum and occasional high-temperature flashing. A metal adapter is welded between a hexaboride electrode and a metal filament. Some embodiments use a tungsten filament, a tantalum adapter, and a LaB6 microrod electrode with a nanorod emitter tip. Other material combinations are disclosed, as also usage in electron sources for electron microscopes. In variations, the adapter is deposited onto the filament and the electrode then welded to the adapter.

The application discloses a kind of solder, solder slurry, magnetron cathode assembly and preparation method thereof, it is related to magnetron cathode assembly field.Therein, solder is obtained by 15-40wt% tungsten, 30-60wt% molybdenum and 15-40wt% nickel mixed ball milling.Solder slurry includes organic carrier, solvent and solder, organic carrier is 5-15% of the weight of the solder, solvent is 5-20% of the weight of the solder.Lamp filament and molybdenum end cap in magnetron cathode assembly are brazed using the above-mentioned solder, specific operation method is that solder slurry is coated on molybdenum end cap, sintering forms solder layer, then again heating melts solder layer to weld and fix lamp filament and molybdenum end cap.The solder in the present application has the advantages of low cost, low brazing temperature and wide range, low vapor pressure, can improve the welding effect of lamp filament and molybdenum end cap while reducing the bubbling probability of molybdenum end cap, so as to improve the qualified rate of finished product of magnetron cathode assembly.