メカニカルアロイング法によるNd2Fe14B金属間化合物の製造

概要

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Mechanical alloying of elemental Nd, Fe and B powders in a composition of Nd2Fe14B was performed in an argon atmosphere by using a high energy ball mill and a conventional ball mill. The structures of mechanically alloyed samples were examined by X-ray diffraction, differential thermal analysis, transmission electron microscopy, scanning electron microscopy and electron probe microanalysis. The results suggested the formation of amorphous Nd2Fe14B materials regardless of the milling apparatus used. In the other hand, the amorphization behaviour and the morphology of the powder particles was deeply dependent on the difference in the accumulated energy given during the milling process.
社団法人粉体粉末冶金協会の論文