Co含量对FeCoPB非晶合金软磁性能和弯曲韧性的影响  

Effect of Co Content on the Soft Magnetic Properties and Bending Ductility of FeCoPB Amorphous Alloys

作　　者：史植广 李轩 谢兴铖 杨剑 林中坤 曹瑞军 张涛[4] Shi Zhiguang;Li Xuan;Xie Xingcheng;Yang Jian;Lin Zhongkun;Cao Ruijun;Zhang Tao(GRIMAT Engineering Institute Co.,Ltd,Beijing 101407,China;No.18th Research Institute,China Electronics Technology Group Corporation,Tianjin 300384,China;GRINM(Guangdong)Institute for New Advanced Materials and Technology,Foshan 528041,China;School of Materials Science and Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]有研工程技术研究院有限公司,北京101407 [2]中国电子科技集团公司第十八研究所,天津300384 [3]有研(广东)新材料技术研究院,广东佛山528041 [4]北京航空航天大学材料科学与工程学院,北京100191

出　　处：《稀有金属材料与工程》2023年第4期1530-1535,共6页Rare Metal Materials and Engineering

基　　金：有研工程技术研究院有限公司青年人才托举计划(5272203);江西省重大课题研发专项(20194ABC28004);有研科技集团有限公司科技创新基金天使研究项目(2019TS0102);有研工程技术研究院有限公司科技创新基金项目(57272006);有研(广东)新材料技术研究院技术开发项目(66272033)。

摘　　要：采用熔体旋淬的方法制备了FeCo含量达到87 at%Fe-Co-P-B系非晶合金薄带,研究了金属元素Co对Fe-Co-P-B系非晶合金的形成能力、软磁性能和弯曲韧性的影响规律。该合金系具有高的饱和磁化强度1.75~1.84 T,且热处理后薄带仍具有良好的弯曲韧性。添加Co元素后,提高了合金的居里温度,矫顽力升高。对薄带样品施加12 MPa的拉应力,合金的矫顽力由12.8 A/m降低到6.5 A/m。因此,通过成分和应力的调控可以避免Fe基非晶合金热处理引起的弛豫脆性问题,为获得具有优异软磁性能和良好弯曲韧性的Fe基非晶合金提供重要途径。Fe-Co-P-B amorphous alloys with high FeCo contents(up to 87at%)were synthesized by melt spinning method.The effects of the metallic element Co on glass formation ability(GFA),thermal stability,and magnetic properties of Fe-Co-P-B amorphous alloys were investigated in details.Fe87-xCoxP2B11(x=5-7)amorphous alloys have high saturated magnetization(from 1.75 T to 1.84 T)and good bending ductility even after annealing.The Curie temperature(T_(c))of the present Fe-Co-P-B alloys obviously increases with the substitution of Fe by Co,and the coercivity(Hc)increases.The tensile stress applied to the Fe-based amorphous alloys can obviously reduce Hc from 12.8 A/m to 6.5 A/m with the tensile stress change from 0 to 12 MPa.The optimal adjustment of both the alloy composition and stress provides an important way to obtain Fe-based amorphous with both excellent soft-magnetic properties and good bending ductility,which can avoid annealing-induced embrittlement.

关 键 词：FE基非晶合金 软磁性能 弯曲韧性 应力调控 

分 类 号：TG139.8[一般工业技术—材料科学与工程]