Mechanical Alloying of Co and Al Powders

1.IntroductionMechanical alloying is one of the effec-tive methods to prepare amorphous alloys[1].This method was first used by Koch etal.to prepare the Ni;Nb;amorphous alloy[2].Since then many other amorphousbinary alloys have been prepared by the

Co_(65)Al_(35)金属粉机械合金化致非晶研究

一、引言 机械合金化形成非晶是近年来非晶态物理与材料研究中既有理论意义又具实用价值的课题。通常认为,体系有大而负的混合热是机械合金化非晶形成的必要热力学条件,足够小的原子尺寸比则是快速原子扩散固态反应所必须。