高性能Fe-Si软磁粉芯的制备及性能研究  

Preparation and performance study of high-performance soft magnetic Fe-Si powder cores

作　　者：李杨[1,2] 程继贵[1,2] 陈闻超[1,2] 杜建文[1,2] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009 [2]安徽省粉末冶金工程技术研究中心,合肥230009

出　　处：《粉末冶金技术》2014年第1期18-22,共5页Powder Metallurgy Technology

摘　　要：以Fe-6.5Si粉末为基粉、多组分无机氧化物作为粘结剂,通过温压成形、热处理制得Fe-Si软磁粉芯。分别使用扫描电子显微镜、振动磁强计对样品的密度、微观形貌以及磁性能等进行了测试分析。结果表明:粘结剂的含量、温压压力、温压温度对Fe-Si软磁粉芯的性能都会产生影响,在压制温度150℃、压制压力为900MPa时,粘结剂含量为1.5%(质量分数)的Fe-Si生坯密度可以达到6.34g/cm3,经过720℃氩气气氛下热处理后密度可达到6.58g/cm3,饱和磁感应强度为1.26T,矫顽力为0.81 kA·m-1。Soft magnetic Fe-Si powder cores were prepared using Fe-6. 5Si powders as raw materials, multicomponent inorganic oxides as binders by warm compaction and heat treatment. Scanning electron microscope, vibration magnetometer survey analysis were used to analyze the density, microstructure and magnetic properties of the samples. The results indicate that the content of binders, compaction pressure and temperature would affect the properties of the Fe-Si powder cores. Green density of 6. 34g/cm3 of Fe-Si compacts can be reached with binder of 1.5% , the warm compaction temperature of 150℃ and pressure of 900 MPa. The density of the Fe-Si cores by heat treatment in argon atmosphere at 720℃ is 6.58g/cm3 , saturation induction is 1.26T and coercive force is 0. 81 kA· m-1.

关 键 词：温压工艺 多组分无机粘结剂 Fe-Si软磁粉芯 磁性能 

分 类 号：TQ174.73[化学工程—陶瓷工业]