28-02-2013 дата публикации
Номер: US20130049908A1
Принадлежит:
The invention relates to a component of rare earth permanent magnet material, and the atomic percents of the material are Re(x)Fe(100x-z-a-b-c)B(z)Nb(a)Al(b)M(c), wherein x=12-16, z=5.5-6.5, a=0.05-1, b=0-0.8, and c=0-3. Re stands for rare earth elements, which comprises one or more of Nd, Pr, Gd, Ho, Dy and Tb. By adding Nb, Hcj can be improved, the rectangle degree of J-H demagnetization curve can be improved, and the temperature stability of the product can also be improved; and by adding Nb, the amount of Dy and Tb in heavy rare earth can be reduced, and the cost of the material can also be reduced. 1. A component of rare earth permanent magnet material being characterized having atomic percents of the material are as follows:Re(x)Fe(100-x-z-a-b-c)B(z)Nb(a)Al(b)M(c), wherein x has a range between 12 and 16, z has a range between 5.5 and 6.5, a has a range between 0.05 and 1, b has a range between 00 and 0.8 and c has a range between 0 and 3; andwherein Re comprises at least one or more of Nd, Pr, Gd, Ho, Dy and Tb.2. A manufacturing process of rare earth permanent magnet material , comprising the steps of:compounding materials from the following: Re(x)Fe(100-x-z-a-b-c)B(z)Nb(a)Al(b)M(c), wherein x has a range between 12 and 16, z has a range between 5.5 and 6.5, a has a range between 0.05 and 1, b has a range between 0 and 0.8 and c has a range between 0 and 3; and wherein Re comprises at least one or more of Nd, Pr, Gd, Ho, Dy and Tb;strip casting the compounded materials in a intermediate frequency induction vacuum rapid hardening furnace, said strip casting process comprises the steps of: turning on a heating power source for heating within 1 Pa vacuum degree, charging about 0.05 MPa argon gas into the furnace for refining before the materials are molten, and pouring molten steel when the temperature of the molten steel is about 1400 DEG C., to ensure that the molten steel flows to a rotating copper roller with cooling water along a diversion trench, to form ...
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