烧结Sm(Co,Fe,Cu,Zr)_z的矫顽力机制及其影响因素  

Coercivity Mechanism of Sm(Co,Fe,Cu,Zr)_z Sintered Magnets and Its Influencing Factors

作　　者：彭龙[1] 徐光亮[1] 张明[2] 

机构地区：[1]西南科技大学材料学院,绵阳621010 [2]西南应用磁学研究所,绵阳621000

出　　处：《材料导报》2006年第7期38-42,共5页Materials Reports

基　　金：四川省杰出青年基金(02ZQ026-047);四川省重点科技项目(02GG009-011);四川省应用基础研究项目(05JY059-072)

摘　　要：综述了烧结Sm(Co,Fe,Cu,Zr)z的矫顽力机制及成分和工艺对矫顽力的影响。温度对矫顽力机制的影响强烈。随着温度的升高,畴壁钉扎逐渐从排斥型转变为吸引型,当温度高于胞壁相的居里温度时,畴壁钉扎机制几乎完全转变为形核机制。成分和工艺对微观结构、两相的磁学参数有一定影响,因而影响矫顽力。Coercivity mechanism models of Sm（Co, Fe, Cu, Zr）z sintered magnets and the influence of components and procession control on coercivity are reviewed in this article The influence of temperature on coercivity IS very strong. With increasing temperature, the domain wall pinning mechanism changes from repulsive to attractive pinning and when it＇s above the Curie temperature of the boundary phase, a nucleation mechanism may be dominant. Coercivity is impacted by components and procession control because of their effects on microstructure and magnetic parameters of 2 ： 17 cell phase and 1 ： 5 boundary phase.

关 键 词：高温稀土永磁 烧结Sm(Co FE CU Zr)z 矫顽力机制 矫顽力温度系数 

分 类 号：TM273[一般工业技术—材料科学与工程] TF046.4[电气工程—电工理论与新技术]