| 摘要 |
<p>A melt of an iron-based rare earth material alloy, represented by (Fe?1-m#191T?m#191)?100-x-y-z#191Q?x#191R?y#191M?z#191, 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.</p> |
