机械化学及其在稀土永磁材料中的应用  

Mechanochemical reaction and its applications in the synthesis of rare earth permanent magnets

作　　者：王敬雪 涂浩然 闫羽[1] 苏峰[1] 杜晓波[1] WANG Jing-xue;TU Hao-ran;YAN Yu;SU Feng;DU Xiao-bo(College of Physics,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学物理学院

出　　处：《物理实验》2020年第2期1-6,26,共7页Physics Experimentation

摘　　要：介绍了机械化学的定义、发展历史、特点、机理和应用,重点介绍了近期发现的稀土过渡族合金在正庚烷中球磨的过程中,正庚烷分解产生氢气和碳,以及氢气与稀土过渡族合金发生歧化反应生成稀土氢化物2个机械化学过程.通过这2种机械化学过程和随后的真空热处理技术,获得了具有较好永磁性的SmCo 5,Nd-Fe-C和Sm-Fe-C永磁材料.The definition,development history,characters,mechanism and applications of mechanochemical reaction had been introduced.More attention had been paid on the recently found decomposition of heptane to H 2 and C when the rare earth-transition alloys had been ball milled in heptane and the formation of rare earth hydrides.Through these two mechanochemical processes and the succedent annealing,SmCo 5,Nd-Fe-C and Sm-Fe-C permanent magnetic materials with better magnetic properties had been obtained.

关 键 词：稀土永磁 机械化学 高能球磨 正庚烷分解 歧化 

分 类 号：G132.27[文化科学]