Method and apparatus for controlling the size of powder produced by the Armstrong process
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United States of America Patent
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Apr 1, 2008
Grant Date -
Apr 29, 2004
app pub date -
Sep 3, 2003
filing date -
Sep 7, 2002
priority date (Note) -
Expired
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Abstract
A method of controlling the size and morphology of powder made by the subsurface injection of a halide vapor into a liquid metal is disclosed. A reaction zone is established and the temperature thereof or the time the powder remains therein is controlled to change powder characteristics.
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