摘要
采用单辊快凝法制备出了Co73Si10B17非晶材料,研究了其非晶形成能力与磁学性能.应用X射线衍射(XRD)、透射电子显微镜(TEM)对条带的显微结构及非晶化程度进行了分析,用示差热分析法(DTA)测量了合金的玻璃转变温度和晶化温度,用振动样品磁强计(VSM)测量了合金的静态磁学性能.实验结果表明,在所研究的合金成分范围内和单辊快淬工艺条件下,钴基合金的非晶态形成能力大,制备非晶薄带较容易.Co73Si10B17非晶态合金具有较高的热稳定性,DTA曲线上有一个明显的吸热峰和两个明显的放热峰,合金的玻璃转变温度(Tg)为715K,合金的初始晶化温度(Tx1)为753K,第二个晶化温度(Tx2)为823K,因而合金的过冷液相区ΔT=Tx1-Tg=38K.Co73Si10B17非晶合金具有优异的软磁性能,饱和磁感应强度(Bs)为1.04T.功率损耗(W)、剩磁(Br)与矫顽力(Hc)为零.
An amorphous material Co73Si10B17 is prepared by means of single-roller roiling and quickconsolidating. The glass forming ability and magnetic properties are studied. The microstructure is investigated with X-ray diffraction and transmission electron microscopy （TEM）. The glass forming temperature and crystallization temperature of the alloy is studied with differential thermal analysis（DTA） . The static magnetic performance of the alloy is studied with vibration sample magnetism. The result of test indicate that the Co-base alloy has a high glass forming ability and, it is relatively easy to prepare thin amorphous ribbon under the condition of defined composition range of the alloy and single-rolling, quick-consolidating. The amorphous alloy Co73Si10B17 has higher thermostability, there is an obvious heat absorption peak and two obvious exothermic peaks on the DTA curve, glass transmission temperature of the alloy （Tg） is 715 K, its initial crystallization temperature （Tx1 is 753 K second crystallization temperature （Tx2） is 823 K, so that the temperature range of alloy super cooling phase △T is 38 K. The Co73Si10B17 alloy exhibits excellent soft magnetism at room temperature. The saturate magnotization （Bs） is 1.04 T. The power loss, residual magnetism （Br）, and magneto-rectification ability （Hc） is naught.
出处
《兰州理工大学学报》
CAS
北大核心
2005年第4期19-22,共4页
Journal of Lanzhou University of Technology
基金
国家863计划(2003AA32X150)
关键词
非晶态合金
Co基
玻璃形成能力
热稳定性
磁学性能
amorphous alloy
Co-base
glass forming performance ability
thermal stabilityl crystallization
magnetic performance
