Material interfaces for magnetohydrodynamic metal manufacturing
First Claim
Patent Images
1. A nozzle for jetting liquid metal, the nozzle comprising:
- a housing at least partially defining a fluid chamber, the fluid chamber having an inlet region and a discharge region;
one or more magnets supported on the housing with a magnetic field of the one or more magnets directed through the housing; and
electrodes defining at least one portion of a firing chamber within the fluid chamber between the inlet region and the discharge region, wherein electric current is conductible from the electrodes into the firing chamber in a direction intersecting the magnetic field in the firing chamber, and a portion of the housing defining the discharge region of the fluid chamber is formed of a ceramic material, wherein at least one of the electrodes is integrally formed with, and formed of the same material as, a section of the housing defining at least one portion of the fluid chamber away from the discharge region.
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Abstract
Devices, systems, and methods are directed to applying magnetohydrodynamic forces to liquid metal to eject liquid metal along a controlled pattern, such as a controlled three-dimensional pattern as part of additive manufacturing of an object. Nozzles associated with these devices, systems, and methods include a combination of materials suitable for withstanding prolonged exposure to high temperatures associated with certain liquid metals while facilitating efficient delivery of current to produce magnetohydrodynamic forces controllable over a range of frequencies associated with commercially viable three-dimensional fabrication.
44 Citations
7 Claims
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1. A nozzle for jetting liquid metal, the nozzle comprising:
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a housing at least partially defining a fluid chamber, the fluid chamber having an inlet region and a discharge region; one or more magnets supported on the housing with a magnetic field of the one or more magnets directed through the housing; and electrodes defining at least one portion of a firing chamber within the fluid chamber between the inlet region and the discharge region, wherein electric current is conductible from the electrodes into the firing chamber in a direction intersecting the magnetic field in the firing chamber, and a portion of the housing defining the discharge region of the fluid chamber is formed of a ceramic material, wherein at least one of the electrodes is integrally formed with, and formed of the same material as, a section of the housing defining at least one portion of the fluid chamber away from the discharge region. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification