抄録
The phase characterization of N2-gas-atomized Mn-Si powder was examined by comparing with those of an ingot and mechanically milled (MM) powder. The atomized powder showed single phase of MnSi1.7. A small amount of MnSi phase was precipitated by annealing at high temperature. The results shows that the atomizing process is very effective to obtain the single phase of MnSi1.7 compared to other processes. The MM powder from MnSi1.7 ingot also showed single phase of MnSi1.7. A MnSi phase was precipitated on the MM powder by 743 K-0 s annealing. On the other hand, the atomized powder preserved MnSi1.7 single phase after same annealing. Precipitation of MnSi phase was observed after 1000 K-0 s annealing on the atomized powder.
