Metallurgical apparatus – Having means for contacting a solid metalliferous material... – By immersing an article to be treated in bath of molten...
Reexamination Certificate
2008-07-08
2008-07-08
Wyszomierski, George (Department: 1793)
Metallurgical apparatus
Having means for contacting a solid metalliferous material...
By immersing an article to be treated in bath of molten...
C266S202000
Reexamination Certificate
active
07396502
ABSTRACT:
The present invention provides a method for producing nano-sized Fe powder having a polymer coated layer on a surface thereof, so as to prevent the nano-sized Fe powder from being oxidized under atmosphere. The method includes: gasifying an iron pentacarbonyl (Fe(CO)5) or an iron acetate ((CH3CO2)2Fe) precursor in a ceramic bubbler; forming nano-sized Fe particles due to the crystallization of Fe gas while mixing the gasified precursor with Ar gas in a reactor; and precipitating the nano-sized Fe particles in a polymer solution in a chamber, before the nano-sized Fe particles are oxidized. According to this technique, Fe powder on the order of tens of nms in size, and having a polymer coated layer, are obtained from the Fe precursor. A system for producing the nano-sized Fe powder is also disclosed.
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Choi Chul-Jin
Kim Byung Kee
Lee Dong Won
Korea Institute of Machinery and Materials
Lathrop & Gage LC
Wyszomierski George
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