Ta 添加对（Fe0．46Co0．36Ni0．04Zr0．14）100－xTax非晶合金复合材料磁性能和力学性能的影响

摘要

利用铜模吸铸法制备出直径为3mm的(Fe0．46Co0．36Ni0．04Zr0．14)100－xTax(x＝0,4,8,12)非晶合金复合材料柱状试样,通过X射线衍射(XRD)、选区电子衍射(SAED)、振动样品磁强计(VSM)、微机控制电子式万能力学试验机和扫描电镜(SEM)研究了不同Ta含量对合金的磁性能和压缩力学性能的影响.结果表明,随着Ta含量的增加,合金中不断有晶体相Co2Zr、Co2Ta0．5Zr0．5析出,合金的矫顽力Hc呈现出减小的趋势,而合金的饱和磁化强度Ms、抗压强度σbc和弹性应变εe则呈现出先增加后减小的趋势.当x＝4时,合金的Ms、σbc和εe均达到最大值,分别为137．70A·m2/kg、1814MPa和4．583％.说明选取合适的Ta含量能够明显改善(Fe0．46Co0．36Ni0．04Zr0．14)100－xTax非晶合金复合材料的磁性能和力学性能.%(Fe0. 46Co0. 36Ni0. 04Zr0. 14)100-xTax(x=0, 4, 8, 12 )amorphous alloy composites rods were prepared by copper mold suction casting.Influences of Ta addition on magnetic properties and mechanical properties of (Fe0.46 Co0.3 6 Ni0.04 Zr0.1 4 )1 00-x Tax amorphous alloy composites were investigated by the means of X-ray diffraction (XRD),selected area electron diffraction(SAED),vibrating sample magnetometer(VSM),the compute con-trolled electronic mechanical testing system and scanning electron microscope (SEM).The results show that some crystal phase Co2 Zr,Co2 Ta0.5 Zr0.5 were separated constantly out with the increase of Ta content,coercivity H c was decreasing and saturation magnetization M s ,compressive strengthσbc ,elastic strainεe were increasing firstly,then decreasing with the increase of Ta content.M s ,σbc,εe reached the maximum value which are 137.70 A·m2/kg,1 814 MPa and 4.583% when x =4.It shows that the suitable Ta content can obviously improve the magnetic and mechanical properties of (Fe0.46 Co0.3 6 Ni0.04 Zr0.1 4 )1 00-x Tax amorphous alloy.