机构地区: 广东工业大学材料与能源学院
出 处: 《中国材料科技与设备》 2014年第4期37-40,共4页
摘 要: 采用单铜辊甩带法制备了Fe(84.5-x)SixB14.5.Cu1(x=0,2,2.5,3,4)非晶合金带材,并用X射线衍射仪(XRD)、差示扫描量热仪(DSC)、振动样品磁强计(VSM)研究了Fe(84.5-x)SixB14.5Cu1合金带材的非晶形成能力、热稳定性和软磁性能。结果表明:Si元素能明显提高该体系合金的非晶形成能力,并提高了淬火态非晶合金带材的一级和二级起始晶化温度;通过合金的退火处理,合金带材析出的α—Fe纳米晶晶粒尺寸约为30nm;其中Fe(84.5-x)SixB14.5Cu1非晶合金带材经过460℃保温5min热处理后可以获得较高的饱和磁感应强度为1.82T. AmorphousFe(84.5-x)SixB14.5.Cu1 (x=0, 2, 2.5, 3, 4) alloy ribbons were prepared by the single roller melt --spinning method. X--ray diffraction (XRD), Differential scanning calorimeter (DSC) and Vibrating sample magnetometer (VSM) were applied Io investigate the glass forming ability, thermal stability and magnetic properties of Fe(84.5-x)SixB14.5.Cu1 alloy ribbons. It was found that the glass forming ability was improved and the first crystallization onset temperature (Tx1) and the second crystallization onset temperature (Tx2) increased with increasing Si addition. The average grain size (D) of the α--Fe phases precipitated from alloy ribbons was about 30nm. The result of Fe(84.5-x)SixB14.5.Cu1 amorphous ribbons annealed at 460℃ for 5min shows a higher B~ of 1.82T.