摘要
采用铜模吸铸法制备Cu60Zr33Ti7大块非晶合金(BMGs),用X射线衍射仪(XRD)、透射电子显微镜(TEM)确定其非晶态结构,并利用同步示差扫描量热仪(DSC)对其晶化动力学进行研究.结果显示:该BMGs第一晶化峰晶化产物为Cu10Zr7,其晶化过程有显著的动力学效应.由Kissinger法和Ozawa法得到的全局晶化激活能分别为116.27、122.9kJ·mol-1,该大块非晶合金具有很好的热稳定性.
Cu60Zr33Ti7 bulk metallic glasses （BMGs） was prepared by means of copper-mold suction casting. X-ray diffraction （XRD） and transmission electron microscopy （TEM） were employed to verify its amorphous structure. Its crystallization kinetics was studied with differential scanning calorimetry （DSC）. The results showed that Cul0Zr7 phase precipitated first in the crystallization process which has a remarkable kinetic effect. Activation energy calculated with Kissinger method and Ozawa method was 116.27,122. 9 kJ/mol, respectively. Thermal stability of Cu60Zr33Ti7 BMGs was very fine.
出处
《兰州理工大学学报》
CAS
北大核心
2014年第4期6-8,共3页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(51061008)
关键词
大块非晶合金
晶化激活能
热稳定性
bulk metallic glass
activation energy
thermal stability
