专利检索_........和Ⅳa族元素如Gd2Fe14C专利检索_........和Ⅳa族元素如Gd2Fe14C专利检索查询

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
141	NANOCOMPOSITE MAGNET	AU2002366140	2002-11-19	AU2002366140A1	2003-06-10	HIROSAWA SATOSHI; KANEKIYO HIROKAZU; MIYOSHI TOSHIO
A nanocomposite magnet has a composition represented by (Fe_1-mT_m)_100-x-y-z-nQ_xR_yTi_zM_n, where T is at least one of Co and Ni, Q is at least one of B and C, R is at least one rare earth element that always includes at least one of Nd and Pr and optionally includes Dy and/or Tb, and M is at least one element selected from the group consisting of Al, Si, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb. The mole fractions x, y, z, m and n satisfy 10 at %
142		DE69424845	1994-09-22	DE69424845D1	2000-07-13	KITAZAWA ATSUNORI; ISHIBASHI TOSHIYUKI; AKIOKA KOJI

143		AT93102276	1993-02-12	AT167239T	1998-06-15	YAMAMOTO KAZUHIKO; MIYAKE YUICHI; OKADA CHIKARA
An alloy ingot for permanent magnet consists essentially of rare earth metal and iron and optionally boron. The two-component alloy ingot contains 90 vol% or more of crystals having a crystal grain size along a short axis of 0.1 to 100 mu m and that along a long axis of 0.1 to 100 mu m. The three-component alloy ingot contains 90 vol% or more of crystals having a crystal grain size along a short axis of 0.1 to 50 mu m and that along a long axis of 0.1 to 100 mu m. The alloy ingot is produced by solidifying the molten alloy uniformly at a cooling rate of 10 to 1000 DEG C/sec. at a sub-cooling degree of 10 to 500 DEG C. A permanent magnet and anisotropic powders are produced from the alloy ingot.
144		DE69220876	1992-10-16	DE69220876T2	1997-12-18	SAKURADA SHINYA; HIRAI TAKAHIRO; TSUTAI AKIHIKO; SAHASHI MASASHI; NAGAI HIDEO; YAMASHITA TSUTOMU
A magnetic material with an improved maximum energy product useful for high performance permanent magnet, bond magnet and other applications is disclosed. The magnetic material is expressed in a general formula R1xR2yM100-x-y where R1 is at least one element selected from the rare earth elements, R2 is at least one element selected from elements having an atomic radius in a range of 0.156 to 0.174 nm, M is at least one element selected from Fe and Co and x and y are atomic percent individually defined as x/2, y/0.01 and 4&x+y&20, and M occupying 90 atomic percent or more in the principal phase of the compound.
145		DE69110644	1991-12-20	DE69110644T2	1995-12-14	COEY JOHN MICHAEL DAVID; SUN HONG; HURLEY DAVID PATRICK

146		DK91311867	1991-12-20	DK0493019T3	1995-11-20	COEY JOHN MICHAEL DAVID; SUN HONG; HURLEY DAVID PATRICK

147	Compositions of intermetallic alloys for manufacturing permanent magnets based on rare earths, iron and a metal additive, synthesis method and uses	FR9304327	1993-04-13	FR2704087A1	1994-10-21	MICHAEL COEY; JORGE MORROS; THIERRY SEGUELONG
The invention relates to novel compositions based on intermetallic alloys of rare earths and of iron which are characterised in that the said intermetallic alloys answer to the general formula Tx(Fe, M)y in which T designates at least one rare earth, preferably samarium, M at least one metallic element (additive) chosen in the group consisting of titanium, zirconium, vanadium, molybdenum, tantalum, hafnium and tungsten, and x and y are numbers lying inclusively and respectively between 1.5 and 2.5 and between 16 and 19. Preferably, the alloys of the invention further contain niobium, by way of additive. The compositions according to the invention are obtained by melting and solidification. The invention also relates to magnetic materials based on nitrided and/or carburised derivatives of the above alloys, as well as the use of the latter for preparing permanent magnets. By virtue of the presence of the above additives, the alloys, and their derivatives, of the invention, are free, or substantially free, from free iron.
148	Producing hard magnetic material - by carbonising a pre-product having thallium-2, zinc-17 crystal structure to interstitially locate carbon@ atoms inside the structure	DE4134245	1991-10-16	DE4134245A1	1993-04-22	KUHRT CHRISTIAN DIPL PHYS DR; KATTER MATTHIAS DIPL ING; WECKER JOACHIM DIPL PHYS DR
Producing a hard magnetic material based on Sm-Fe-C having a crystalline, hard magnetic phase with Th2Zn17 structure, consists of mechanically alloying together a preproduct based on Sm2Fe17 and heat treating to give the microstructure corresponding to the hard magnetic phase followed by heat treating in a C-containing atmosphere such that the C atoms are interstitially located in the crystalline structure. ADVANTAGE - The carbon is located inside the structure in a relatively simple carbonising process to give a hard magnetic structure with sufficiently high intrinsic coersive field strength of esp. above 5 KA/cm at room temp.
149		DE68904811	1989-05-26	DE68904811D1	1993-03-25	OHASHI KEN; TAWARA YOSHIO; OSUGI RYO
A rare earth permanent magnet of the formula R(Fe1-x-yCoxMy)z , in which R is rare earth element(s) and/or Y, M is Si, Ti, Mo, B, W, V, Cr, Mn, Al, Nb, Ni, Sn, Ta, Zr, and/or Hf, and x, y, z are numbers such that 0
150	MAGNETIC MATERIALS AND PROCESSES FOR THEIR PRODUCTION	CA2058283	1991-12-20	CA2058283A1	1992-06-22	COEY JOHN M D; SUN HONG; HURLEY DAVID P
IMPROVED MAGNETIC MATERIALS AND PROCESSES FOR THEIR MANUFACTURE A process is provided for modifying the magnetic properties of an intermetallic compound comprising at least iron, or a combination of iron with at least one transition metal, and at least one rare earth element. The process comprises heating the intermetallic compound in a reaction gas containing at least one element of groups IIIA, IVA or VIA of the Periodic Table in the gaseous phase to interstitially incorporate the element or elements of these groups into the crystal lattice of the intermetallic compound. Novel magnetic materials showing easy uniaxial anisotropy, increased spontaneous magnetization and Curie temperatures are produced by the process.
151	MAGNETIC MATERIALS	CA2040686	1991-04-17	CA2040686A1	1991-10-19	COEY JOHN MICHAEL DAVID; SUN HONG
IMPROVED MAGNETIC MATERIALS A new magnetic material of the general formula: RxFeyxlazb is derived from an intermetallic compound of rhombohedral, hexagonal or tetragonal crystal structure wherein R is one or more rare earth elements, X' is an element of groups IIIA, IIIB, IVA or IVB of the periodic table, Z is one or more elements of group VA of the periodic table, x is a value from 0.5 to 2, y is a value from 9 to 19, a is a value from 0 to 3, b is a value from 0.3 to 3 and wherein when the magnetic material of said general formula is derived from an intermetallic compound of rhombohedral or hexagonal crystal structure Fe is unsubstituted or partially substituted by another element and when the magnetic material of said general formula is derived from an intermetallic compound of tetragonal crystal structure Fe is partially substituted by any element of group IIIA or IVA of the periodic table or a transition metal from another group with the further proviso that in the case of materials derived from said rhombohedral or hexagonal crystal structures the element X' is not boron when the component Z is antimony or bismuth. In these new materials the element Z is an interstitial addition to the existing structures and is introduced by a gas-solid reaction. The materials exhibit increased Curie temperatures, magnetic strength and easy uniaxial anisotropy and are therefore suitable for fabricating into permanent magnets.
152		DE4007533	1990-03-09	DE4007533C1	1991-08-29	GAIFFI, SEVI, 7234 AICHHALDEN, DE
The invention relates to a process for manufacturing a sintered SEFe permanent magnet with a high content of a tetragonal magnetic phase of the SE2F14B and/or SE2Fe14C type and high corrosion resistance. The corrosion resistance is substantially improved if 1.5 to 8 vol. % of glass powder is added to the basic alloy of the permanent magnet.
153	ímã permanente de terras-raras	BRPI0601890	2006-02-02	BRPI0601890B1	2018-01-16	HAJIME NAKAMURA; KOICHI HIROTA; MASANOBU SHIMAO; TAKEHISA MINOWA
"ímã permanente de terras-raras". um ímã permanente de terras-raras é na forma de um corpo de ímã sinterizado que tem uma composição de liga r^ 1^~ a~r^ 2^~ b~t~ c~a~ d~f~ a~o~ f~m~ g~, em que f e r^ 2^ são distribuídos de maneira tal que suas concentrações aumentem na média do centro para a superfície do corpo do ímã, e os contornos de grãos com uma concentração de r^ 2^/ (r^ 1^+r^ 2^) que é na média maior do que a concentração de r^ 2^/ (r^ 1^+r^ 2^) contidos nos grãos da fase primária de um sistema tetragonal de (r^ 1^,r^ 2^) 2~ t~14~ a~ formem uma estrutura de rede tridimensional que é continua da superfície do corpo do ímã até uma profundidade de pelo menos 10 <109>m. a invenção fornece ímãs sinterizados de r-fe-b que apresentam uma alta força coerciva.
154	Verfahren zur Herstellung eines Seltenerd-Dauermagnets	DE602007007278	2007-11-19	DE602007007278D1	2010-08-05	NAKAMURA HAJIME; HIROTA KOICHI; MINOWA TAKEHISA

155		DE60228198	2002-02-04	DE60228198D1	2008-09-25	KANEKIYO HIROKAZU; HIROSAWA SATOSHI
A melt of an iron-based rare earth material alloy, represented by (Fe1-mTm)100-x-y-zQxRyMz, is prepared. T is Co and/or Ni; Q is B and/or C; R is selected from Y (yttrium) and the rare earth elements; M is selected from Al, Si, Ti, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb; 10<=x<=30 at %; 2%<=y<10 at %; 0<=z<=10 at % and 0<=m<=0.5. The melt is fed onto a guide to form a flow of the melt thereon and move the melt onto a melt/chill roller contact region, where the melt is rapidly cooled by the chill roller to make a rapidly solidified alloy. An oxygen concentration of the melt yet to be fed onto the guide is controlled at about 3,000 ppm or less in mass percentage.
156		DE60221448	2002-03-29	DE60221448D1	2007-09-06	MORIMOTO HITOSHI; KANEKO YUJI
A rare earth alloy sintered compact includes a main phase represented by (LR 1-x HR x ) 2 T 14 A, where T is Fe with or without non-Fe transition metal element(s); A is boron with or without carbon; LR is a light rare earth element; HR is a heavy rare earth element; and 0
157		BRPI0601890	2006-02-02	BRPI0601890A	2006-12-05	NAKAMURA HAJIME; HIROTA KOICHI; SHIMAO MASANOBU; MINOWA TAKEHISA

158		DE60119864	2001-10-04	DE60119864T2	2006-09-28	KANEKO YUJI; TANIGUCHI KATSUYA; SEKINO TAKAO
The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1x+R2y)T100-x-y-zQz where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd2Fe14B crystalline structure, wherein: molar fractions x, y and z satisfy 8≤ x≤ 18 at%, 0.1≤ y≤ 3.5 at% and 3≤ z≤ 20 at%, respectively; and a concentration of R2 is higher in at least a part of a grain boundary phase than in the main phase crystal grains.
159		DE69927931	1999-07-28	DE69927931T2	2006-07-20	KAMATA MASAMI; OBATA MICHIO; SATO YUICHI

160		DE60119864	2001-10-04	DE60119864D1	2006-06-29	KANEKO YUJI; TANIGUCHI KATSUYA; SEKINO TAKAO
The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sintered magnet having a composition of (R1x+R2y)T100-x-y-zQz where R1 is at least one element selected from the group consisting of all rare-earth elements excluding La (lanthanum), Y (yttrium) and Sc (scandium); R2 is at least one element selected from the group consisting of La, Y and Sc; T is at least one element selected from the group consisting of all transition elements; Q is at least one element selected from the group consisting of B and C, and including, as a main phase, a crystal grain of an Nd2Fe14B crystalline structure, wherein: molar fractions x, y and z satisfy 8≤ x≤ 18 at%, 0.1≤ y≤ 3.5 at% and 3≤ z≤ 20 at%, respectively; and a concentration of R2 is higher in at least a part of a grain boundary phase than in the main phase crystal grains.

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