微量镍元素添加对铁基非晶/纳米晶磁芯软磁性能的影响  

EFFECT OF TRACE NI ELEMENT ON THE SOFT MAGNETIC PROPERTIES OF FE-BASED AMORPHOUS/NANOCRYSTALLINE CORES

作　　者：蒋达国[1] 文兴旺 王同帅 刘启瑞 JANG Da-guo;WENG Xing-wang;WANG Tong-shuai;LIU Qi-rui(School of Mathematics and Physics,Jinggangshan University,Ji＇an,Jiangxi 343009,China)

机构地区：[1]井冈山大学数理学院,江西吉安343009

出　　处：《井冈山大学学报（自然科学版）》2018年第3期77-83,共7页Journal of Jinggangshan University (Natural Science)

基　　金：国家自然科学基金项目(51461020);江西省自然科学基金项目(20151BAB202025);江西省教育厅科技项目(GJJ150786);江西省原子与分子物理重点学科项目(2011-2015)

摘　　要：用单辊法制备的宽20 mm,厚25μm的Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9和Fe_(73.5)Ni_(0.3)Cu_1Nb_3Si_(14.2)B_8合金带材,绕制成外径为40 mm,内径为25 mm的环型磁芯,然后将磁芯在不同的温度下进行退火处理,研究了微量Ni元素添加对合金带材的晶化行为以及对横向磁场退火后的非晶/纳米晶磁芯的软磁性能的影响。结果表明:与Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9合金带材相比,添加微量Ni元素的Fe_(73.5)Ni_(0.3)Cu_1Nb_3Si_(14.2)B_8合金带材的一级起始晶化温度Tx1和一级晶化峰温度Tp1降低,其二级起始晶化温度Tx2和二级晶化峰温度Tp2升高,两级起始晶化温度之间的差值ΔTx增大;与横向磁场退火后的Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9非晶/纳米晶磁芯相比,横向磁场退火后的Fe_(73.5)Ni_(0.3)Cu_1Nb_3Si_(14.2)B_8非晶/纳米晶磁芯的起始磁导率μi和饱和磁感应强度Bs减小,矫顽力Hc增大;当测试频率f和最大磁感应强度Bm不变时,有效幅值磁导率μa增大,比总损耗Ps和矫顽力Hc减小;当测试频率f不变时,电感Ls和品质因数Q增大;当励磁电流I不变时,感应电动势E大。Annular cores with an external diameter of 40 mm and an internal diameter of 25 mm were made after the alloy strips Fe（73.5）Cu1Nb3Si（13.5）B9 and Fe（73.5）Ni（0.3）Cu1Nb3Si（14.2）B8 with a width of 20 mm and a thickness of 25 μm were prepared by the single roll technique, and then annealed under different temperatures. The effect of trace Ni element on the crystallization behavior of alloy strips and on the soft magnetic properties of amorphous/nanocrystalline cores after annealing by transverse magnetic field were investigated. Results show that, relative to Fe（73.5）Cu1Nb3Si（13.5）B9 alloy strips, Fe（73.5）Ni（0.3）Cu1Nb3Si（14.2）B8 alloy strips with trace Ni element have the lower first-stage starting crystallization temperature Tx1 and crystallization peak temperature Tp1, the higher second-stage starting crystallization temperature Tx2 and crystallization peak temperature Tp2, and a larger difference between the first-stage and the second-stage starting crystallization temperatures ΔTx. After annealing by transverse magnetic field, Fe（73.5）Ni（0.3）Cu1Nb3Si（14.2）B8 cores have the lower initial permeability μi and saturation induction density Bs, and the higher coercive force Hc as compared with Fe（73.5）Cu1Nb3Si（13.5）B9 amorphous/nanocrystalline cores. Meanwhile, Fe（73.5）Ni（0.3）Cu1Nb3Si（14.2）B8 cores have the larger effective amplitude permeability μa, and the special magnetic loss Ps and smaller coercive force Hc when the test frequency f and maximum magnetic induction Bm are constant, the larger inductance Ls and quality factor Q when the test frequency does not change, and the larger volt-ampere characteristic E when the excitation current I is unchanged.

关 键 词：Fe73.5Cu1Nb3Si13.5B9合金带材 微量镍元素添加 非晶/纳米晶磁芯 软磁性能 横向磁场退火 

分 类 号：TG139.8[一般工业技术—材料科学与工程]