高温超导永磁体的疲劳效应  

FATIGUE BEHAVIOR IN A HIGH-Tc SUPERCONDUCTING PERMANENT MAGNET

作　　者：丘明[1] 韩朔[1] 林良真[1] 韩燕生[1] 

机构地区：[1]中国科学院电工研究所

出　　处：《电工电能新技术》1996年第1期11-15,共5页Advanced Technology of Electrical Engineering and Energy

摘　　要：本文研究了热循环和反复励磁对高温超导永磁体钉扎能力的影响，从Ｂｅａｎ模型和电流二分量模型出发，计算出永磁体在励磁过程中和磁通钉扎状态下的电磁力分析，在此基础上分析了永磁体发生疲劳效应的原因。In this paper,the influence of thermal cycles and repeated magnetization on the ability of trapping field for a high-Tc superconducting permanent magnet is studied.At the same time,distributions of magnetic force inside the magnet are counted on the course of magnetization and under the trapped-field condition,respectively on the basis of Bean model and Js+Jv model.Then reasons for the cyclic fatigue behavior in the magnet is analysed.At last,a possible method of reinforcing a superconducting permanent magnet is stated.

关 键 词：高温 超导永磁体 疲劳效应 永磁材料 

分 类 号：TM26[一般工业技术—材料科学与工程] TM273[电气工程—电工理论与新技术]