Method for manufacturing powder material and shaped products utilizing the conditions in outer space
AssigneeMotoren- und Turbinen-Union Munchen GmbH
InventorAxel Rossman
Life of this patent
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Abstract
A method and apparatus for manufacturing powders comprising converting a solid starting material from the solid state to the gaseous or vapor phase, and forming powder particles by transferring the starting material in gaseous or vapor phase into a sealed reaction chamber with nucleation agents. The reaction chamber includes a wall of bellows construction to enable the chamber to expand and contract and a radiation reflecting coating is provided on at least a portion of the wall. The reaction chamber is subjected to one or more conditions of outer space. The powder particles can be supplied to a shaping stage in which the powder particles are compressed into compacts or formed into the final shape of a desired component.
Claims16
A method for manufacturing powders comprising converting a solid starting material from the solid state to the gaseous or vapor phase, and forming powder particles by introducing the starting material in gaseous or vapor phase through an inlet into a sealed chamber and subjecting said chamber and the material therein to substantially zero gravity such that the crystal nuclei of the starting material become formed into the powder particles in flotation condition in said chamber, expanding or contracting said sealed chamber while the material is subjected to zero gravity and reflecting radiation into the chamber from a radiation reflecting coating in a portion of the wall of the chamber.
A method for manufacturing powders comprising converting a solid starting material from the solid state to the gaseous or vapor phase, and forming powder particles by introducing the starting material in gaseous or vapor phase through an inlet into a sealed chamber and subjecting said chamber and the material therein to a vacuum and to substantially zero gravity such that crystal nuclei of the starting material become formed into the powder particles in flotation condition in said chamber, collecting said powder particles at an outlet of said sealed chamber into a collector which is at the same vacuum as the sealed chamber, cooling the powder particles at least in the region of said chamber where the particles pass from the chamber to the collector and forming said region with a radiation reflective coating on at least a part of the wall thereof.
Dependencies are inferred from the claim text.