Title:
NANOCRYSTALLINE AND NANOCOMPOSITE RARE EARTH PERMANENT MAGNET MATERIALS AND METHOD OF MAKING THE SAME
Document Type and Number:
WIPO Patent Application WO2004015723
Kind Code:
A3
Abstract:
Nanocrystalline and nanocomposite rare earth permanent magnet materials and methods for making the magnets are provided. The magnet materials can be isotropic or anisotropic and do not have a rare-earth rich phase. The magnet materials comprise nanometer scale grains and possesses a potential high maximum energy product, a high remancence, and a high intrinsic coercivity. The magnet materials having these properties are produced by using methods including magnetic annealing and rapid heat processing.
Inventors:
LEE DON
HILTON JOHN STANLEY
CUI BAOZHI
LIU SHIQIANG
HILTON JOHN STANLEY
CUI BAOZHI
LIU SHIQIANG
Application Number:
PCT/US2003/016160
Publication Date:
May 27, 2004
Filing Date:
May 22, 2003
Export Citation:
Assignee:
UNIV DAYTON (US)
International Classes:
B22F3/00; C22C19/07; C22C33/02; C22C38/00; H01F1/053; H01F1/055; H01F1/057; H01F1/058; H01F1/059; H01F1/06; H01F1/08; H01F41/02; (IPC1-7): H01F1/057; H01F1/058; H01F1/059; H01F1/08
Domestic Patent References:
| WO1999021196A1 | 1999-04-29 | |||
| WO2002093591A2 | 2002-11-21 |
Foreign References:
| EP1014393A1 | 2000-06-28 |
Other References:
GUTFLEISCH O ET AL: "Nanocrystalline high performance permanent magnets", JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, ELSEVIER, AMSTERDAM, NL, vol. 242-245, April 2002 (2002-04-01), pages 1277 - 1283, XP004360888, ISSN: 0304-8853
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