Patent ID: 6416593
Filing Date: 2002-07-09
Classification: H01F

Abstract:
A method of manufacturing a magnetic material, comprising the steps of:preparing a mother alloy containing a Th2Ni17 crystal phase as a principal phase, and a composition expressed by the following general formula: (R1xR21-x)yBzT1-y-z (wherein, R1 is at least one element selected from rare earth elements, R2 is at least one element selected from Zr, Hf, Ti and Sc, T is at least one element selected from Fe and Co, and X, Y and Z designate numerical values satisfying 0.5&lE;X&lE;1, 0.005&lE;Y&lE;0.2, and Z ranging such that B is present in amount sufficient to increase the homogeneity and fitness phase of said magnetic material and/or to suppress the precipitation of a soft magnetic phase of said magnetic material, to &lE;0.1); recrystallizing the mother alloy by making hydrogen absorb into the mother alloy and hydrogen discharge from the mother alloy; and introducing nitrogen into the recrystallized mother alloy to obtain the magnetic material having a Th2Ni17 crystal phase.