In situ oxide removal, dispersal and drying
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United States of America Patent
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Aug 25, 2015
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app pub date -
Dec 6, 2010
filing date -
Dec 15, 2009
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Abstract
A method of removing oxide from metallic powder. The method comprises: providing a powder defined by a plurality of particles, each particle in the plurality of particles having a metallic core and an oxide layer surrounding the metallic core; etching the plurality of particles, wherein the oxide layer is removed from each particle in the plurality of particles, leaving only the metallic core; coating each particle in the etched plurality of particles with an organic layer; dispersing the etched plurality of particles; and providing the powder as dispersed particles that are absent an oxide layer surrounding the metallic core, each metallic core being coated with an organic layer. The steps of etching, coating and dispersing are performed in situ with the plurality of particles disposed in liquid, absent any exposure of the metallic cores to air.
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