Compound for rare-earth bonded magnet and bonded magnet...

Details Compound for rare-earth bonded magnet and bonded magnet... Compound for rare-earth bonded magnet and bonded magnet...

2007-05-15

2007-05-15

Sheehan, John P. (Department: 1742)

Metal treatment

Stock

Magnetic

C148S301000

Reexamination Certificate

active

10642324

ABSTRACT:
A compound for a rare-earth bonded magnet includes a rare-earth alloy powder and a binder. The rare-earth alloy powder includes at least about 2 mass % of Ti-containing nanocomposite magnet powder particles with a composition represented by (Fe1-mTm)100-x-y-zQxRyMz, where T is Co and/or Ni; Q is B with or without C; R is at least one rare-earth element substantially excluding La and Ce; M is at least one metal element selected from Ti, Zr and Hf and always includes Ti; and 10<x≦20 at %; 6≦y<10 at %; 0.1≦z≦12 at %; and 0≦m≦0.5. The particles include at least two ferromagnetic crystalline phases, in which hard magnetic phases have an average crystal grain size of about 10 nm to about 200 nm, soft magnetic phases have an average crystal grain size of about 1 nm to about 100 nm; and the average crystal grain size of the soft magnetic phases is smaller than that of the hard magnetic phases.

REFERENCES:
patent: 4585473 (1986-04-01), Narasimhan et al.
patent: 4597938 (1986-07-01), Matsuura et al.
patent: 4664724 (1987-05-01), Mizoguchi et al.
patent: 4770723 (1988-09-01), Sagawa et al.
patent: 4836868 (1989-06-01), Yajima et al.
patent: 4845837 (1989-07-01), Lloyd
patent: 4851058 (1989-07-01), Croat
patent: 4935074 (1990-06-01), De Mooij et al.
patent: 4994109 (1991-02-01), Willman et al.
patent: 5022939 (1991-06-01), Yajima et al.
patent: 5049203 (1991-09-01), Mukai et al.
patent: 5049208 (1991-09-01), Yajima et al.
patent: 5190684 (1993-03-01), Yamashita et al.
patent: 5209789 (1993-05-01), Yoneyama et al.
patent: 5225004 (1993-07-01), O'Handley et al.
patent: 5230749 (1993-07-01), Fujimura et al.
patent: 5240513 (1993-08-01), McCallum et al.
patent: 5595608 (1997-01-01), Takebuchi et al.
patent: 5597425 (1997-01-01), Akioka et al.
patent: 5665177 (1997-09-01), Fukuno et al.
patent: 5666635 (1997-09-01), Kaneko et al.
patent: 5725792 (1998-03-01), Panchanathan
patent: 5834663 (1998-11-01), Fukuno et al.
patent: 5872501 (1999-02-01), Hamano et al.
patent: 5905424 (1999-05-01), Panchanathan
patent: 6022424 (2000-02-01), Sellers et al.
patent: 6172589 (2001-01-01), Fujita et al.
patent: 6183571 (2001-02-01), Inoue et al.
patent: 6183572 (2001-02-01), Panchanathan et al.
patent: 6280536 (2001-08-01), Inoue et al.
patent: 6302972 (2001-10-01), Hirosawa et al.
patent: 6332933 (2001-12-01), Ma et al.
patent: 6352599 (2002-03-01), Chang et al.
patent: 6386269 (2002-05-01), Kanekiyo et al.
patent: 6471786 (2002-10-01), Shigemoto et al.
patent: 6478889 (2002-11-01), Kanekiyo
patent: 6648984 (2003-11-01), Takaki et al.
patent: 6706124 (2004-03-01), Kanekiyo et al.
patent: 6790293 (2004-09-01), Nomura
patent: 6790296 (2004-09-01), Kanekiyo et al.
patent: 6796363 (2004-09-01), Arai et al.
patent: 6814776 (2004-11-01), Kanekiyo et al.
patent: 6890392 (2005-05-01), Kanekiyo et al.
patent: 2001/0015239 (2001-08-01), Kanekiyo
patent: 2002/0017339 (2002-02-01), Kanekiyo et al.
patent: 2002/0117235 (2002-08-01), Kanekiyo et al.
patent: 2003/0136468 (2003-07-01), Kanekiyo et al.
patent: 2004/0020569 (2004-02-01), Kanekiyo
patent: 2004/0051614 (2004-03-01), Kanekiyo et al.
patent: 2004/0099346 (2004-05-01), Nishiuchi et al.
patent: 2004/0134567 (2004-07-01), Kanekiyo et al.
patent: 2004/0194856 (2004-10-01), Miyoshi et al.
patent: 2005/0040923 (2005-02-01), Miyoshi
patent: 197 39 959 (1998-03-01), None
patent: 0 197 712 (1986-10-01), None
patent: 0 302 395 (1989-02-01), None
patent: 0 529 148 (1993-03-01), None
patent: 0 632 471 (1995-01-01), None
patent: 06-32471 (1995-01-01), None
patent: 0 874 375 (1998-10-01), None
patent: 0 959 478 (1999-11-01), None
patent: 1 018 751 (2000-07-01), None
patent: 1 061 532 (2000-12-01), None
patent: 1 158 545 (2001-11-01), None
patent: 1 207 537 (2002-05-01), None
patent: 1 371 434 (2003-12-01), None
patent: 199904 (1987-07-01), None
patent: 59-046008 (1984-03-01), None
patent: 60-009852 (1985-01-01), None
patent: 61-140350 (1986-06-01), None
patent: 62-062503 (1987-03-01), None
patent: 63-155601 (1988-06-01), None
patent: 63-190138 (1988-08-01), None
patent: 63-301505 (1988-12-01), None
patent: 64-703 (1989-01-01), None
patent: 64-7501 (1989-01-01), None
patent: 64-7502 (1989-01-01), None
patent: 64-081301 (1989-03-01), None
patent: 1-100242 (1989-04-01), None
patent: 01-162702 (1989-06-01), None
patent: 01-204401 (1989-08-01), None
patent: 02-247307 (1990-10-01), None
patent: 2-298003 (1990-12-01), None
patent: 3-260018 (1991-11-01), None
patent: 3-261104 (1991-11-01), None
patent: 03-264653 (1991-11-01), None
patent: 04-147604 (1992-05-01), None
patent: 05-269549 (1993-10-01), None
patent: 05-315174 (1993-11-01), None
patent: 06-140235 (1994-05-01), None
patent: 06-338407 (1994-12-01), None
patent: 7-122412 (1995-05-01), None
patent: 07-226312 (1995-08-01), None
patent: 08-053710 (1996-02-01), None
patent: 08-124730 (1996-05-01), None
patent: 8-162312 (1996-06-01), None
patent: 8-167515 (1996-06-01), None
patent: 11-071646 (1996-06-01), None
patent: 08-322175 (1996-12-01), None
patent: 9-155507 (1997-06-01), None
patent: 09-155513 (1997-06-01), None
patent: 10-053844 (1998-02-01), None
patent: 10-282790 (1998-10-01), None
patent: 11-8109 (1999-01-01), None
patent: 11-101607 (1999-04-01), None
patent: 11-206075 (1999-07-01), None
patent: 11-323509 (1999-11-01), None
patent: 2000-079449 (2000-03-01), None
patent: 2000-079451 (2000-03-01), None
patent: 2000-234137 (2000-08-01), None
patent: 2000-235909 (2000-08-01), None
patent: 2000-348919 (2000-12-01), None
patent: 2001-244107 (2001-09-01), None
patent: 2001-354315 (2001-11-01), None
patent: 2002-64009 (2002-02-01), None
patent: 2002-80921 (2002-03-01), None
patent: 2002-175908 (2002-06-01), None
patent: 2002-212686 (2002-07-01), None
patent: 2002-239688 (2002-08-01), None
patent: 2002-302702 (2002-10-01), None
patent: 1998-16178 (1998-05-01), None
patent: 100201601 (1999-03-01), None
patent: 2 136 069 (1999-08-01), None
patent: WO 99/21196 (1999-04-01), None
patent: WO 00/03403 (2000-01-01), None
patent: WO 00/45397 (2000-08-01), None
patent: WO 00/52713 (2000-09-01), None
patent: WO 01/68297 (2001-09-01), None
patent: WO 02/067275 (2002-08-01), None
patent: WO 02/067275 (2002-08-01), None
patent: WO 02/093591 (2002-11-01), None
Fumitoshi Yamashita, “Applications of Rare-Earth Magnets to the Small Motor Industry”, Proceeding of the Seventeenth International Workshop, Aug. 18-22, 2002, Newark, Delaware, USA, pp. 100-111.
L. Henderson Lewis et al., “Phase Composition and Magnetic Characteristics of Inert Gas-Atomized RE-Fe-B-Based Powders”, IEEE Transactions on Magnetics, vol. 31, No. 6, Nov. 1995, pp. 3641-3643.
M.J. Kramer et al., “A Generalized Solidification Model and Microstructural Verification for the Nd-Fe-B-Ti-C System Processed by Rapid Solidification”, J. Appl. Phys. 81(8), Apr. 1997. pp. 4459-4461.
Missell et al., “Rare-Earth Magnets and Their Applications,” Proceedings of the 14thInternational Workshop, Sep. 1996, pp. 28-37, vol. 1, World Scientific, Singapore, new Jersey, London, Hong Kong.
Yao, J.M. et al, “Coercivity of Ti-modified (α-Fe)-Nd2Fe14B Nanocrystalline Alloys”, Journal of Applied Physics, Nov. 15, 1994, pp. 7071-7073, vol. 76, No. 10, American Institute of Physics, Woodbury, New York, USA.
Z.S. Wronski, “Microstructure and Magnetic Properties of Low-Neodymium Nd-Fe-B-Si Magnets Produced from HP Gas Atomized Powder”, J. Appl. Phys. 69(8), Apr. 1991, pp. 5507-5509.
D.J. Branagan, et al., “A New Generation of Gas Atomized Powder with Improved Levels of Energy Product and Processability”, IEEE Transactions of Magnetics, vol. 32, No. 5, Sep. 1996, pp. 5097-5099.
Lewis L H et al, “Compositional Clustering in ND2FE14B Melt-Spun Ribbons” Journal of Applied Physics, American Institue of Physics. New York, US, vol. 87, No. 9, May 1, 2000, pp. 4735-4737.
Office Action issued Jun. 17, 2005. U.S. Appl. No. 10/432,862. “Nanocomposite Magnet.”
Office Action issued Mar. 28, 2005. U.S. Appl. No. 10/381,005. “Iron-bas

Affiliated with

Also associated with

Rating

Compound for rare-earth bonded magnet and bonded magnet... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compound for rare-earth bonded magnet and bonded magnet..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compound for rare-earth bonded magnet and bonded magnet... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3735805