| 摘要 |
The present invention provides a nanometer compound magnet which is stable and good in magnetic characteristic. A iron-based rare earth nanometer compound magnet manufacturing method of the present invention comprises a working procedure of preparing for alloy melt, a composing formula of which is expressed by T100-x-y-zBxRyMz (wherein, T is at least one element selected from Fe, Co and Ni and mainly contains Fe element; R is at least one rare earth element; M is at least one element selected from Al, Si, Ti, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb), the composing ratio of x, y and c respectively satisfies that x is more than 5 and less than or equal to 30at percent, y is more than or equal to 1 and less than or equal to 11at percent, and z is more than or equal to1 and less than or equal to 10at percent, and a working procedure of emergency cooling for the cooling solidification of the melt. The working procedure of emergency cooling comprises a first coolingworking procedure that the melt is emergently cooled to the temperature range between 200 DEG C and 800 DEG C to form emergency cooling alloy by contacting the melt with the surface of a rotating cooling roller, a heat preservation working procedure that before the temperature of the emergency cooling alloy is reduced to be lower than 200 DEG C, the emergency cooling alloy is kept under the temperature within the range between 500 DEG C and 800 DEG C for 0.5 second to 3600 seconds and a second cooling working procedure that the emergency cooling alloy is cooled to the temperature lower than 200 DEG C. |
