掺Cr对FeSiAl合金粉磁性能的影响  

Effect of Cr-doped on Magnetic Properties of FeSiAl Alloy Powder

作　　者：赵定武[1] 何玉定[1] 杨元政[1] 谢致薇[1] 陈先朝[1] ZHAO Dingwu HE Yuding YANG Yuanzheng XIE Zhiwei CHEN Xianchao(Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China)

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《热加工工艺》2017年第2期78-80,共3页Hot Working Technology

基　　金：高等学校博士学科点专项科研基金(20124420110007);广东省联合培养研究生示范基地人才培养项目(2013JDXM27)

摘　　要：将不同比例的Cr掺入FeSiAl合金中,经真空电弧熔炼、破碎、球磨制得合金粉。添加适量润滑剂和粘结剂,经冷压成型制得磁粉芯,并在933K退火1h。用振动样品磁强计检测合金粉的饱和磁化强度,用动态磁滞回线测试装置测试磁粉芯的功率损耗,用LCR测试有效磁导率。结果表明,当Cr含量低于6%时,随Cr含量升高,合金粉的饱和磁化强度升高;当Cr含量为6%时达到136.73emu/g;在Cr含量为6%时磁粉芯的损耗最小,为25.38 W/kg;随Cr含量的升高,磁导率减小。The different proportions of Cr were incorporated into FeSiAl alloys. After vacuum arc melted, breaken and ball-milled, the alloy powders were prepared. The right amount of lubricant and binder were added, then, the magnetic powder cores were made by cold forming and annealing for 1 h at 933 K. The saturation magnetization of the alloy powders was measured by vibrating samples magnetometer. The power loss of magnetic powder cores was measured by dynamic magnetic hysteresis loop apparatus. The effective permeability was measured by LCR. The results show that when Cr content is less than 6% ; with Cr content increasing, the saturation magnetization of the alloy powder increases; the saturation magnetization can reach 136.73 emu/g when Cr content is 6%; the power loss is minimum, which is 25.38 W/kg when Cr content is 6%.With Cr content increasing, the permeability decreases.

关 键 词：FeSiAl合金粉 磁粉芯 掺Cr 功率损耗 饱和磁化强度 有效磁导率 

分 类 号：TG113.225[金属学及工艺—物理冶金]