具有正温度系数的2:17型Sm(Co,Fe,Cu,Zr)_z永磁体的研究现状  

Current Progress of 2:17 Type Sm(Co,Fe,Cu,Zr)_z Magnets with Positive Temperature Coefficient

作　　者：文雪萍[1] 易健宏[2] 彭元东[1] 李丽娅[1] 叶途明[1] 夏庆林[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,长沙410083 [2]牛津大学材料系

出　　处：《材料导报》2005年第6期52-55,59,共5页Materials Reports

基　　金：教育部高等学校骨干教师研究计划项目;湖南省自然科学基金项目资助(02JJY2078)

摘　　要：总结了矫顽力具有正温度系数的2:17型 Sm(Co,Fe,Cu,Zr)_z 永磁体的研究现状;分析了成分与胞状显微组织对矫顽力正温度系数的影响,概括了目前解释矫顽力正温度系数的几种矫顽力机制模型,提出了对矫顽力正温度系数的研究是高温永磁体 Sm(Co,Fe,Cu,Zr)_z 今后一个很有前景的新研究方向。The present researching conditions of 2:17 Sm(Co,Fe,Cu,Zr)_z magnets in which the coercivity has a- nomalous temperature dependence are summed up.The effects of the compositions and the cellular microstructure on anoma- lous temperature dependence of coercivity are analyzed.Several coercivity models for explaining the anomalous temperature de- pendence of coercivity at present are summarized.It is put forward that the research on the anomalous temperature dependence of coercivity is a new hopeful researching direction of high temperature 2:17 Sm(Co,Fe,Cu,Zr)_z permanent magnets in the future.

关 键 词：正温度系数 研究现状 FE CU 矫顽力 高温永磁体 显微组织 机制模型 研究方向 

分 类 号：TS272[农业科学—茶叶生产加工] TN373[轻工技术与工程—农产品加工及贮藏工程]