机械合金化Nd_8Fe_(81)Cu_3Ti_8合金的结构与磁性  

The Structure and Magnetic Properties of Nd_8Fe_81Cu_3Ti_8 Prepared by Mechanical Alloying

作　　者：崔保志[1] 孙校开[1] 赵新国[1] 刘伟[1] 

机构地区：[1]中国科学院金属研究所

出　　处：《金属功能材料》1998年第2期56-58,共3页Metallic Functional Materials

摘　　要：本文研究了掺杂３ａｔ％Ｃｕ对Ｎｄ（Ｆｅ，Ｔｉ）１２化合物结构与磁性的影响。结果表明，加入３ａｔ％Ｃｕ后，ＴｈＭｎ１２结构相的形成温度由９００℃降至７５０℃，但也对渗氮造成困难。预先将样品在３００℃氢气中进行活化处理，有利于形成氮化物。氮化物的内禀矫顽力随退火温度的升高而增大，到８５０℃达最大值。The effects of the 3at % Cu addition on the structure and magnetic properties of Nd(Fe,Ti)_12 have been studiedIt shows that,with adding 3at % Cu,the temperature for forming 1:12 phase decreases from 900℃ to 750℃,and the addition of Cu makes nitrogenation difficultThe activation pretreatment of specimen in hydrogen at 300 ℃ is favorable to the formation of the nitrideWith increasing the annealing temperature,the nitride’s intrinsic coercivity increases and culminates at 850℃.

关 键 词：Nd(Fe Ti)12 渗氮 磁性能 铜掺杂 磁性材料 MA 

分 类 号：TG132.27[一般工业技术—材料科学与工程] TM274[金属学及工艺—合金]