High performance iron-rare earth-boron-refractory-cobalt...

Details High performance iron-rare earth-boron-refractory-cobalt... High performance iron-rare earth-boron-refractory-cobalt...

H - Electricity

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F

H01F 1/057 (2006.01) B22F 3/00 (2006.01) C04B 35/04 (2006.01) C04B 35/515 (2006.01) C04B 35/58 (2006.01) C04B 35/64 (2006.01) C04B 35/653 (2006.01) C22C 1/04 (2006.01) H01F 1/03 (2006.01) H01F 1/26 (2006.01)

Patent

CA 2336011

Magnetic nanocomposite materials including iron, rare earth elements, boron, refractory metals and cobalt which have favorable magnetic properties and are suitable for making bonded magnets are disclosed. Compositions of the present invention can be of the formula: (Nd1-yLay)vFe100-v-w-x-zCowMzBx, where M is at least one refractory metal selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and W; v is from about 5 to about 15; w is greater than or equal to 5; x is from about 9 to about 30; y is from about 0.05 to about 0.5; and z is from about 0.1 to about 5. Preferably M is at least Cr. These materials have good magnetic properties and are suitable for use in preparing bonded magnets.

L'invention concerne des matières de nanocomposites magnétiques comprenant du fer, des éléments de terre rare, du bore, des métaux réfractaires et du cobalt, qui présentent des propriétés magnétiques favorables et conviennent pour fabriquer des aimants liés. Les compositions de la présente invention peuvent être représentées par la formule: (Nd¿1-y?La¿y?)¿v?Fe¿100-v-w-x-z?Co¿w?M¿z?B¿x?, dans laquelle M est au moins un métal réfractaire sélectionné dans le groupe constitué par Ti, Zr, Hf, V, Nb, Ta, Cr, Mo et W; v est compris entre environ 5 et environ 15; w est supérieur ou égal à 5; x est compris entre environ 9 et environ 30; y est compris entre environ 0,05 et environ 0,5; et z est compris entre environ 0,1 et environ 5. De préférence, M est au moins Cr. Ces matières possèdent de bonnes propriétés magnétiques et conviennent pour préparer des aimants liés.

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