Influences of Similar Elements on Glass Forming Ability and Magnetic Properties in Al-Ni-La Amorphous Alloy

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• 作者：Guihua  ; Li ; Weimin  ; Wang  ; ;   ; ^{weiminw@sdu.edu.cn} ; Xiufang  ; Bian ; Li  ; Wang ; Jiteng  ; Zhang ; Rui  ; Li ; Tao  ; Huang
• 关键词：X-ray diffraction (XRD) ; Transmission electron microscopy (TEM) ; Diamagnetic behavior ; Icosahedral structure
• 刊名：Journal of Materials Science & Technology
• 出版年：2010
• 出版时间：February 2010
• 年：2010
• 卷：26
• 期：2
• 页码：146-150
• 全文大小：340 K

文摘

Similar element substitution has been applied for improving glass forming ability (GFA) in Al₈₆Ni₉La₅ amorphous alloy. The effects of La-Ce and Ni-Co pairs on the GFA, magnetic properties and hardness of Al-Ni-La alloy were investigated by using X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), magnetometer and hardness-tester. The results show the GFA of the samples in the order of Al₈₆(Ni_0.5Co_0.5)₉(La_0.5Ce_0.5)₅<Al₈₆Ni₉La₅<Al₈₆Ni₉(La_0.5Ce_0.5)₅, implying that similar element substitution has a limited enhancing effect on the GFA of the present Al-Ni-La alloy. In addition, the measured samples display a diamagnetic behavior at room temperature. The variations of diamagnetic behavior as well as the microhardness of the samples are strongly dependent on the microstructure, i.e., the amounts of the icosahedral structure and precipitates, after the similar element substitution in the Al-Ni-La alloy.