Method of producing nano-sized Fe powder having polymer...

Details Method of producing nano-sized Fe powder having polymer... Method of producing nano-sized Fe powder having polymer...

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

10980940

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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U.S. Appl. No. 10/974,125; Office Action Mailed Jul. 31, 2007.
U.S. Appl. No. 10/974,125; Notice of Abandonment Mailed Feb. 25, 2008.
Korean Application No. KR10-2003-0077589, Korea Institute of Machinery and Materials, Nov. 4, 2003.

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