退火温度对FeGaGeBCu(P)非晶纳米晶合金组织结构和软磁性能的影响  

Effect of annealing temperature on microstructure and soft magnetic properties of FeGaGeBCu(P)amorphous and nanocrystalline alloy

作　　者：郭璐[1,2] 朱乾科 陈哲 赵晓霞[3] 张克维[1,2] 姜勇 GUO Lu;ZHU Qianke;CHEN Zhe;ZHAO Xiaoxia;ZHANG Kewei;JIANG Yong(School of Materials Science and Engineering, Taiyuan University of Science and Technology,Taiyuan 030024,China;Shanxi Province Key Laboratory of Magnetic and Electric Functional Materials and Their Applications,Taiyuan University of Science and Technology,Taiyuan 030024,China;School of Mechanical Engineering, Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学材料科学与工程学院,太原030024 [2]太原科技大学磁电功能材料及应用山西省重点实验室,太原030024 [3]太原科技大学机械工程学院,太原030024

出　　处：《功能材料》2022年第1期1210-1215,共6页Journal of Functional Materials

基　　金：山西省回国留学人员科研教研项目(HGKY2019083);山西省重点研发计划(国际合作)项目(201803D421046);太原科技大学博士启动金项目(20202034);太原科技大学博时启动金项目(20202030)。

摘　　要：用单辊旋淬法制备了Fe_(76)Ga_(5)Ge_(5)B_(13-x)P_(x)Cu_(1)(x=0,3,5,7)合金带材,并研究了退火温度对合金晶化行为、结构演变和磁性能的影响。结果表明,P元素替换B元素后,合金的非晶形成能力有所降低,但是提高了二次晶化相的热稳定性。同时,P添加一方面细化了纳米晶尺寸,降低了合金矫顽力,P含量为7%(原子分数)的合金在在425℃退火后矫顽力最佳为1.77 A/m;另一方面,P的价电子向残余非晶相中的Fe转移,降低了Fe的磁矩,使得合金饱和磁感应强度降低。此外,P含量高于5%(原子分数)时合金带材表面接近表层位置的晶粒以(200)晶面平行于带材表面存在,而合金内部仍以(110)晶面平行于带材表面存在。Fe-based amorphous and nanocrystalline alloys have attracted extensive attention due to excellent soft magnetic properties,such as high permeability,low coercivity Hc and low core loss.With the development of power electronic industry,electrical equipment requires miniaturization and energy saving,which requires Fe-based amorphous and nanocrystalline alloys to have higher saturation magnetization Bs and lower Hc.In this paper,Fe_(76)Ga_(5)Ge_(5)B_(13-x)P_(x)Cu_(1)(x=0,3,5,7)ribbons were fabricated using the melt spinning technique,and the effect of annealing temperature on the crystallization processes,microstructure and soft magnetic properties have been studied.It was found that,the substitution of B by P deteriorates the glass forming ability of the alloys,but enhance the thermal stability of the secondary crystallization.Besides,the addition of P refine the grain size and reduces coercivity on the one hand,leading to the optimal coercivity of 1.77 A/m in the x=7 ribbon annealed at 425℃.On the other hand,the migration of valence electrons from P to Fe decreases the magnetic moment of Fe in the residual amorphous phase and thus saturation magnetization.In addition,when the content of P is higher than 5 at%,the crystal face(200)of the grains near the surface position is parallel to the surface of the ribbon.But for the grains inside the ribbon,it is the crystal face(110)that runs parallel to the surface of the ribbon.

关 键 词：非晶纳米晶合金 退火温度 P元素 磁矩 矫顽力 

分 类 号：TM271[一般工业技术—材料科学与工程]