Cu-Fe-Cr原位复合材料和Fe-Cr纤维的磁学特性研究  

Study on magnetic properties of Cu-Fe-Cr in-situ composite and Fe-Cr fibers

作　　者：姜微华[1] 孙世清[1] 刘宗茂[1] 刘丛[2] 胡彦君[1] 

机构地区：[1]河北科技大学材料科学与工程学院,河北石家庄050054 [2]廊坊师范学院校长办公室,河北廊坊065000

出　　处：《河北科技大学学报》2006年第3期221-223,238,共4页Journal of Hebei University of Science and Technology

基　　金：教育部重点科学技术研究项目(205015);河北省博士科研基金资助项目(B2004202)

摘　　要：采用拉拔变形法制备了Cu-Fe-Cr原位复合材料,并从线材中提取出Fe-Cr纤维。用扫描电镜观察了复合线材和纤维的微观形貌,并用VSM对复合线材和Fe-Cr纤维进行了磁性测试,绘制了磁滞回线。结果表明:复合线材具有磁各向异性,其易磁化方向平行于线材轴向;随着变形量的增大,复合线材的剩磁和矫顽力逐渐增大;Fe-Cr纤维的比饱和磁化强度Ms达到了150 emu.g-1,是一种有潜在应用价值的吸波材料。Cu-Fe-Cr in-situ composite wires were manufactured by cold drawing and Fe-Cr fibers were extracted from them. The microstructure of composite wires and fibers were observed by SEM, and the magnetic property of the composite wires and Fe-Cr fibers were tested by VSM, and then the hysteresis loops were determined. It shows that the composite wires had magnetic anisotropy paralleling to the long axis of wires; the Ms and the Ho of the wires increased with deformation increasing; the Ms of fibers was 150 emu · g^-1 ,whose fibers may be used as an electro-magnetic wave absorbing material.

关 键 词：原位复合材料 Fe—Cr纤维 磁学特性 

分 类 号：TG115.27[金属学及工艺—物理冶金]