Method for producing spherical particles, having nanometer size, crystalline structure, comprising providing a swirling plasma gas flow
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United States of America Patent
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May 17, 2016
Grant Date -
Oct 2, 2014
app pub date -
Jun 17, 2014
filing date -
Aug 9, 2006
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Abstract
The present invention provides a method for producing nanometer-size spherical particles. The method includes a first step for producing intermediate spherical particles. The intermediate spherical particles include a polycrystalline or single-crystalline region, having a particle size of 1 to 300 μm. The method of the present invention further includes a second step for producing final spherical particles. The second step uses a swirling plasma gas flow having the central axis thereof, the central axis running through an area between an anode and a cathode of a plasma generator. The intermediate spherical particles are discharged along the axis to subject the intermediate spherical particles to a plasma atmosphere of the area to form the final spherical particles.
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