Title:
METAL NAMOMETER IRON POWDER FOR MAGNETORHEOLODICAL TECHNOLOGY
Document Type and Number:
WIPO Patent Application WO/2009/055980
Kind Code:
A1
Abstract:
A process of preparing metal nanometer iron powder for magnetorheolodical technology
includes the following steps: producing nanometer iron powder particles by
incision preparing technique under temperature of - 5 to 20 centigrade with high
frequency incision time set at 5000 to 6000 times per minute, a powder material
with particle distribution of D3 = 40 nm, D25 = 45 nm, D50 = 60 nm, D75 = 652 nm and D97
= 75nm is separated, the surface of the separated iron powder particle is polished
by coating an anti-oxidation layer using nitrogen and hydrogen coating method.
The metal iron powder according to the invention solves the problems existing
in magnetorheolodical technology with its shape changing.
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Inventors:
WANG HUIMIN (CN)
Application Number:
PCT/CN2007/003522
Publication Date:
May 07, 2009
Filing Date:
December 10, 2007
Export Citation:
Assignee:
WANG HUIMIN (CN)
International Classes:
B22F9/04; B22F1/052; B22F1/16; C23C8/06
Foreign References:
| CN1911567A | 2007-02-14 | |||
| CN1970200A | 2007-05-30 | |||
| CN1986118A | 2007-06-27 | |||
| CN1970201A | 2007-05-30 | |||
| CN1962127A | 2007-05-16 | |||
| CN1962131A | 2007-05-16 | |||
| US20050015057A1 | 2005-01-20 | |||
| JP2003119503A | 2003-04-23 |
Attorney, Agent or Firm:
SHANXI TAIYUAN KEWEI PATENT OFFICE (Taiyuan, Shanxi 1, CN)
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