铁基纳米晶软磁材料的温度特性  

Temperature Characteristics of Nanocrystalline Iron-based Soft Magnetic Materials

作　　者：张甫飞[1] 王明海[1] 胡弘剑[1] 

机构地区：[1]宝钢股份有限公司特殊钢分公司特钢技术中心,上海200940

出　　处：《磁性材料及器件》2008年第2期29-32,共4页Journal of Magnetic Materials and Devices

摘　　要：快淬技术制备的铁基纳米晶合金材料组织特征为由晶粒尺寸为十几nm的α-Fe（Si）固溶主相和剩余非晶相所组成的双相组织，处于热力学亚稳定态，用其制成的磁性器件的温度特性问题备受元器件用户的关注。研究了铁基纳米晶变压器铁心的高频损耗Pcm和幅值磁导率μa以及磁粉心的电感性能在一定温度范围内随温度的变化情况，结果表明铁基纳米晶合金系列铁心在-55～150℃温度范围内具有良好的温度稳定性。The nanocrystalline iron-based alloys prepared by rapid quenching technique posses two-phase structure consisting of a dominant α-Fe（Si） solid solution with grain size of a little more than ten nanometers and a remaining amorphous phase, which is in thermodynamic metastable state. Temperature characteristics of the magnetic devices made of nanocrystalline iron-based alloys is very much concerned by final users. The relationship between magnetic performance and temperature of several typical nanocrystaUine iron-based alloy cores is studied in this paper. The test results show that nanocrystalline iron-based alloys have good temperature stability in the temperature range of - 55 to 150℃.

关 键 词：铁基纳米晶合金 磁胜能 温度稳定性 

分 类 号：TM274[一般工业技术—材料科学与工程]