Ni-Zr-Ti-Nb-M(M=Sn,Bi)块体非晶合金的形成及其磁性能研究  

Glass Formation and Magnetic Properties of Ni-Zr-Ti-Nb-M(M=Sn,Bi) Bulk Glass Alloy

作　　者：郑许[1] 杨元政[1] 李青[1] 谢致薇[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《热加工工艺》2012年第2期55-57,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50971046;50771037);高等学校博士学科点专项基金资助项目(200805620004);广东省自然科学基金资助项目(06021473)

摘　　要：从共晶点、混合热、原子尺寸差和微合金化出发,设计了Ni-Zr-Ti-Nb体系具有较高玻璃形成能力的Ni基合金成分,用铜模吸铸法制备了直径2mm的块体非晶合金,用X射线衍射仪、差热扫描量热仪和振动样品磁强计检测了样品的组织结构、热稳定性和磁学性。结果表明:微量Sn的添加提高了合金的玻璃形成能力,制备出了准2mm的棒状完全非晶试样;Bi不利于提高Ni-Zr-Ti-Nb体系合金的玻璃形成能力。此外,微量Sn能使饱和磁感应强度稍有提高。From the aspects of eutectic point, heat of mixing, atomic size difference and micro-alloying, Ni-Zr-Ti-Nb-M （M=Sn,Bi）alloys with high glass forming ability were designed. Bulk metallic glassy rods with the diameter of 2 mm were obtained by copper-mold vacuum suction casting. The microstructure, thermal stability and magnetic were observed by X-ray diffraction, differential scanning calorimetry and vibrating sample magnetometer, respectively, The results show that the micro-alloy element Sn can improve the glass forming ability （GFA） of Ni-Zr-Ti-Nb BMG system. Adding small amount of Bi is not beneficial for the GFA of the alloy system. The addition of Sn can slightly enhance the saturationmagnetization（Ms） of the alloy system.

关 键 词：镍基块体非晶合金 玻璃形成能力 软磁性能 

分 类 号：TG139.8[一般工业技术—材料科学与工程]