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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。Co-Al系几乎都能满足这样二个条件:按
I. INTRODUCTION The formation of amorphous alloy by mechanical alloying is not only the theoretical significance but also practical value in the research of amorphous physics and materials in recent years. It is generally accepted that large and negative mixing heat is the necessary thermodynamic condition for the formation of mechanically alloying amorphous, while a sufficiently small atomic size ratio is necessary for rapid atom diffusion solid state reactions. Almost all Co-Al systems can satisfy two conditions: press