Production method for high purity copper powder using a thermal plasma
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United States of America Patent
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Jun 23, 2015
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Sep 27, 2012
app pub date -
Jul 20, 2010
filing date -
Dec 7, 2009
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Abstract
The present invention relates to a method of manufacturing a high purity copper (Cu) powder material useable in fabricating a sputtering target material for electronic industrial applications, for example a penetrator liner. The foregoing method has a configuration of using an apparatus composed of a raw material feeder, a plasma torch and a reactor to prepare a metal powder, and includes steps of passing a Cu powder having an average particle diameter of 30 to 450 μm through the thermal plasma torch at an introduction rate of 2 to 30 kg/hr, to thereby fabricate a Cu powder having an average particle diameter of 5 to 300 μm.
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