DIFFERENCES IN THE AMORPHIZATION REACTION BY MECHANICAL ALLOYING OF NI-ZR RESULTING FROM DIFFERENT BALL-MILLING TECHNIQUES

It is found that amorphization of Ni-Zr alloys by different milling techniques leads to different amorphization reactions. The amorphous alloy is formed directly from the elements when a ball mill on a vibrating frame is used. In contrast, when our planetary ball mill is used, crystalline intermetallic compounds appear as intermediate products in the amorphization reaction. The composition range of the amorphous Ni-Zr alloy is also different when the different milling techniques are used. The crystallization temperature of the amorphous Ni-Zr alloy is independent of the preparation technique.