电工材料2023No.1谢志斌等：高低温冲击对钕铁硼磁性能、微结构和机械性能影响的研究高低温冲击对钕铁硼磁性能、微结构和机械性能影响的研究谢志斌1，施江焕1，杨阳1，蓝羽青1，崔得锋2（1.宁波市计量测试研究院，浙江宁波315000；2.桂林电器科学研究院有限公司，广西桂林541004）摘要：针对使用环境对钕铁硼的影响，利用高低温环境试验箱模拟高低温冲击环境，研究牌号40H和40SH钕铁硼磁体的磁性能、微结构和机械性能。经试验后发现：试样的剩磁Br、内禀矫顽力HcJ和矫顽力HcB经过高低温冲击试验后未发生明显变化；40H的磁通下降16.59%，40SH降低3.13%，对样品再充磁后，试样磁通恢复至试验前；40H的抗压强度提高4.74%，40SH提高3.39%；40H的维氏硬度提高5.71%，40SH提高5.97%；钕铁硼试样微观结构未发生明显变化。关键词：钕铁硼；高低温冲击；磁性能；抗压强度；微观结构中图分类号：TM271+.3DOI：10.16786/j.cnki.1671-8887.eem.2023.01.007StudyontheEffectofHighandLowTemperatureImpactontheMagneticProperties,MicrostructureandMechanicalPropertiesofNdFebXIEZhibin1,SHIJianghuan1,YANGYang1,LANYuqing1,CUIDefeng2(1.NingboInstituteofMeasurementandTesting,Ningbo315000,China;2.GuilinElectricalEquipmentScientificResearchInstituteCo.,Ltd.,GuangxiGuilin541004,China)Abstract:FortheuseoftheenvironmentontheimpactofNdFeb,Inthispaper,highandlowtemperatureenvironmenttestchamberisusedtosimulatehighandlowtemperatureimpactenvironment,Investigatedthemagneticproperties,microstructureandmechanicalpropertiesof40Hand40SH.ItisfoundthattheremanentmagneticBr,intrinsiccoercivityHcjandcoercivityHcbofthesamplesdonotchangesignificantlyafterhighandlowtemperatureimpacttest;Thefluxof40Hdecreasedby16.59%andthefluxof40SHdecreasedby3.13%.Afterre-magnetizingthesample,themagneticfluxofthesamplewasrestoredtothatbeforethetest;Thecompressivestrengthof40Hand40SHincreasedby4.74%and3.39%respectively;Thehardnessof40Hand40SHincreasedby5.71%and5.97%respectively;ThemicrostructureofNdfebsamplesdidnotchangesignificantly.Keywords:Ndfebfe-boron;Highandlowtemperatureshock;Energyofmagnetism;Compressivestrength;Microstructure引言作为一种重要的功能材料，稀土永磁材料从诞生以来，人们对它的研...
