变温条件下钞钴永磁体损耗特性测量与仿真分析

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中图分类号：TP319 文献标志码：A 文章编号：2095-2945（2025）20-0086-04

Abstract：Inordertoexplore theeffectof temperatureontheAClossof samariumcobaltpermanentmagnets，atest system wasestablishedtoverifytheAClossofsamariumcobaltpermanentmagnetsatdiferenttemperaturesandfrequencies.Thetest resultsshowthattherearediferencesintheAClossofsamarium-cobaltpermanentmagnetsunderdiferenttemperatureand frequency conditions. When the frequency exceeds 500Hz ，the AC loss of samarium-cobalt permanent magnet shows a linear increasetrendwiththeincreaseof temperature.Then，thefiniteelementmodelofpermanentmagnetwasconstructedbyusingthe simulationsoftwareAnsysMaxwelltoexploretheinfluenceoftemperaturechangeonremanenceandcoercivity.Thesimulation resultsshowthatwiththeincreaseof temperature，theremanenceof permanentmagnetdecreasesandthecoercivitydecreases.

Keywords：samariumcobalt permanentmagnet；losscharacteristic；finiteelementsimulation；variable temperaturecondition; coercive force

在尖端器件向高功率、高精密和小型化发展背景下，迫切需要开发具有更高磁性能和服役能力的钴永磁材料。（剩余4086字）