EFFECT OF MILLING ENERGY ON MECHANICAL ALLOYING OF Mo-Si POWDER MIXTURE
LIU Lin; QIN Yong(Institute of Solid Stale Physics; Chinese Academy of Sciences;Hefei 230031) (Manuscript received 1995-06-27; in revised form 1995-11-27)
Cite this article:
LIU Lin; QIN Yong(Institute of Solid Stale Physics; Chinese Academy of Sciences;Hefei 230031) (Manuscript received 1995-06-27; in revised form 1995-11-27). EFFECT OF MILLING ENERGY ON MECHANICAL ALLOYING OF Mo-Si POWDER MIXTURE. Acta Metall Sin, 1996, 32(4): 423-428.
Abstract The mechanical alloying of Mo-Si powder mixture with atomic ratio of 1:2 under different milling conditions has been studied by means of X-ray diffractometry (XRD), SEM and TEM. It is found that the higher energy milling favours the formation of stable α-MoSi_2, while the lower energy milling promotes the formation of metastable β-MoSi2. Thermodynamics and kinetics aspects related to the different phase transformations have been discussed. Correspondent: QIN Yong,(senior engineer, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031)