Process for producing, through strip casting, raw alloy for...

Metal founding – Process – Shaping liquid metal against a forming surface

Reexamination Certificate

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C164S474000, C148S101000, C148S102000, C148S103000, C148S538000, C148S541000

Reexamination Certificate

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07004228

ABSTRACT:
To make a raw alloy, consisting mostly of amorphous structure, highly productively and at a reduced cost for a nanocomposite magnet, a molten alloy represented by Fe100-x-y-zRxQyMz(where R is at least one element selected from Pr, Nd, Dy and Tb; Q is B and/or C; M is at least one element selected from Co, Al, Si, Ti, V, Cr, Mn, Ni, Cu, Ga, Zr, Nb, Mo, Ag, Pt, Au and Pb; and 1 at %≦x<6 at %, 15 at %≦y≦30 at % and 0 at %≦z≦7 at %) is prepared. This molten alloy is rapidly cooled by a strip casting process in which the alloy is fed onto a chill roller, rotating at a peripheral velocity of 3 m/s to less than 20 m/s, at a feeding rate per unit contact width of 0.2 kg/min/cm to 5.2 kg/min/cm. In this manner, an alloy including at least 60 volume percent of amorphous phase can be obtained.

REFERENCES:
patent: 4770723 (1988-09-01), Sagawa et al.
patent: 4802931 (1989-02-01), Croat
patent: 4836868 (1989-06-01), Yajima et al.
patent: 4851058 (1989-07-01), Croat
patent: 4935074 (1990-06-01), De Mooij et al.
patent: 5022939 (1991-06-01), Yajima et al.
patent: 5049208 (1991-09-01), Yajima et al.
patent: 5209789 (1993-05-01), Yoneyama et al.
patent: 5666635 (1997-09-01), Kaneko et al.
patent: 5725792 (1998-03-01), Panchanathan
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: 6695929 (2004-02-01), Kanekiyo et al.
patent: 6790296 (2004-09-01), Kanekiyo et al.
patent: 6814776 (2004-11-01), Kanekiyo et al.
patent: 6890392 (2005-05-01), Kanekiyo et al.
patent: 2005/0040923 (2005-02-01), Miyoshi et al.
patent: 19739959 (1998-03-01), None
patent: 0632471 (1995-01-01), None
patent: 1 018 751 (2000-07-01), None
patent: 1 061 532 (2000-12-01), None
patent: 1104932 (2001-06-01), None
patent: 55-94151 (1980-07-01), None
patent: 55-094151 (1980-07-01), None
patent: 59-046008 (1984-03-01), None
patent: 60-009852 (1985-01-01), None
patent: 61-140350 (1986-06-01), None
patent: 64-703 (1989-01-01), None
patent: 64-7501 (1989-01-01), None
patent: 64-7502 (1989-01-01), None
patent: 01-100242 (1989-04-01), None
patent: 2-179803 (1990-07-01), None
patent: 2-247-309 (1990-10-01), None
patent: 2-247305 (1990-10-01), None
patent: 2-247306 (1990-10-01), None
patent: 2-247307 (1990-10-01), None
patent: 2-247308 (1990-10-01), None
patent: 2-247309 (1990-10-01), None
patent: 2-247310 (1990-10-01), None
patent: 2-298003 (1990-12-01), None
patent: 03-260018 (1991-11-01), None
patent: 03-261104 (1991-11-01), None
patent: 07-122412 (1995-05-01), None
patent: 7-166206 (1995-06-01), None
patent: 08-162312 (1996-03-01), None
patent: 08-167515 (1996-06-01), None
patent: 8-229641 (1996-09-01), None
patent: 8-335506 (1996-12-01), None
patent: 9-155507 (1997-06-01), None
patent: 09-155513 (1997-06-01), None
patent: 10-088294 (1998-04-01), None
patent: 10-265915 (1998-10-01), None
patent: 10-317109 (1998-12-01), None
patent: 11-071646 (1999-06-01), None
patent: 11-323509 (1999-11-01), None
patent: 2000-079449 (2000-03-01), None
patent: 2000-079451 (2000-03-01), None
patent: 2001-226753 (2001-08-01), None
patent: 2001-244107 (2001-09-01), None
patent: 2001-254159 (2001-09-01), 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
Hermann et al., “Growth Kinetics in Undercooled Nd-Fe-B Alloys with Carbon and Ti or Mo Additions” pp. 82-86, 04/2000, Journal of Magnetism and Magnetic Material, vol. 213, Nos. 1-2.
J.Bernardi, et al., “Microstructural analysis of stirp cast Nd-Fe-B alloys for high (BH)maxmagnets”, Journal of Applied Physics, vol. 83 No. 11, Jun. 1998, pp. 6396-6398.
Chang et al., “The Effect of La-Substitution on the Microstructure and Magnetic Properties of Nanocomposite NdFeB Melt Spun Ribbons”, pp. 65-70, 03/97, Journal of Magnetism and Magnetic Materials, vol. 167, Nos. 1-2.
Chang et al., “High PerformanceaFe/R2Fe14B-Type Nanocomposites with Nominal Compositions of (Nd, La)9.5Fe78xCoxCr2B10.5(X-0.10)”, Journal of Magnestism and Magnetic Materials, vol. 189, No. 1(10-1998), pp. 55-61.
Merkulova et al., “The Temperature Dependence of Coercivity in Nancrystaline Nd-Fe-B(TiC) Magnets”, Journal of Applied Physics, vol. 87, No. 9, (05-2000), pp. 4738-4740.
Chiriac et al., “ND8Fe73Co5Hf2B12Strip Cast Alloy”, pp. 5338-5340, 05/2000, Journal of Applied Physics, vol. 87, No. 9.
Q. Chen, et al., “A Study on the Phase Transformation and Exchange-coupling of (Nd0-95La0-05)9.5FebalCo5Nb2B105Nanaocomposites,” Materials Research Society Symposium Proceedings, vol. 577, Apr. 1999, pp. 209-219.
Chang, et al., “The effect of boron and real earth contents on the magnetic properties of La and Cr substituteda-Fe/R2Fe14B-Type Nanocomposites”, Journal of Applied Physics, vol. 83 No. 11, Jun.1998, pp. 6271-6273.
Chang et al., “High PerformanceaFe/Nd2Fe14B-Type Nanocomposites”, pp. 121-123, 01/1998, Applied Physics Letters, vol. 72, No. 1.
Chang et al., “Magnetic and Microstructure Studies of Boron-Enriched (Nd0.95La0.05)11Fe76.5-xCoxTi2B10.5(x=0.15) Melt-Spun Ribbons”, pp. 3312-3314, 09/2000, IEEE Transactions on Magnetics, vol. 36, No.5.
W. C. Chang et al.: “THE EFFECTS OF REFRACTORY METAL ON THE MAGNETIC PROPERTIES OFa- Fe/R2Fe14BB - TYPE NANOCOMPOSITES”, IEEE TRANSACTIONS ON MAGNETICS; Sep. 1999; vol.35 No. 5; IEMGAQ; pp. 3265-3267.
Application No. 09/863,902, Filed May 24, 2001. “Permanent Magnet Including Multiple Ferromagnetic Phases and Method for Producing the Magnet.”
R. Coehoorn, et al., “Novel Permanent Magnetic Materials Made by Rapid Quenching”, Journal de Physique, C8, Dec. 1988, pp. 669-670.

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