Overview of composition and technique process study on 2:17-type Sm-Co high-temperature permanent magnet

作     者：Chao Wang Ming-Gang Zhu Chao Wang;Ming-Gang Zhu

作者机构：Division of Functional MaterialsCentral Iron and Steel Research InstituteBeijing 100081China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第4期

页      面：790-798页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51871063 51571064 and 51590882)。 

主　　题：2-type Sm-Co magnet High temperature Coercivity temperature coefficient Coercivity mechanism 

摘      要：Sm-Co permanent magnets are widely used in aerospace equipments,tubes,sensors and hybrid electric vehicles due to their excellent magnetic properties at both room and high temperatures.Compared to that of Nd-Fe-B magnets,the capability of reliably operating at temperatures up to 500℃ is the biggest preponderance of Sm-Co permanent magnets.However,the reliable high-temperature magnetic properties are susceptible to composition and technique processes.So,appropriate composition and matched technique processes are prerequisites for good high-temperature magnetic properties.This review mainly emphasizes the influences of Sm,Fe,Cu and Zr contents and technique processes on development of high-temperature performance and discusses the controversial hightemperature coercivity mechanism of 2:17-type high-temperature Sm-Co magnets.