Kinetics of Glass Transition and Crystallization in Carbon Nanotube Reinforced Mg-Cu-Gd Bulk Metallic Glass  

作　　者：王银春 王育人 魏炳忱 李维火 孙玉峰 

机构地区：[1]Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China [2]Research Center for Materials, Department of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China

出　　处：《Journal of Rare Earths》2006年第3期327-331,共5页稀土学报（英文版）

基　　金：ProjectsupportedbyKnowledgeInnovationProgramofChineseAcademyofSciences(KJCX2SWL05),andtheNationalNaturalScienceFoundationofChina(50101012)

摘　　要：Mg65Cu25Gd10 bulk metallic glass and its carbon nanotube reinforced composite were prepared. Differential scanning calorimeter （DSC） was used to investigate the kinetics of glass transition and crystallization processes. The influence of CNTs addition to the glass matrix on the glass transition and crystallization kinetics was studied. It is shown that the kinetic effect on glass transition and crystallization are preserved for both the monothetic glass and its glass composite. Adding CNTs in to the glass matrix reduces the influence of the heating rate on the crystallization process. In addition, the CNTs increase the energetic barrier for the glass transition. This results in the decrease of GFA. The mechanism of the GFA decrease was also discussed.Mg65Cu25Gd10 bulk metallic glass and its carbon nanotube reinforced composite were prepared. Differential scanning calorimeter （DSC） was used to investigate the kinetics of glass transition and crystallization processes. The influence of CNTs addition to the glass matrix on the glass transition and crystallization kinetics was studied. It is shown that the kinetic effect on glass transition and crystallization are preserved for both the monothetic glass and its glass composite. Adding CNTs in to the glass matrix reduces the influence of the heating rate on the crystallization process. In addition, the CNTs increase the energetic barrier for the glass transition. This results in the decrease of GFA. The mechanism of the GFA decrease was also discussed.

关 键 词：metallic glass carbon nanotube glass transition CRYSTALLIZATION kinetic effect composite glass GADOLINIUM rare earths 

分 类 号：TG139.8[一般工业技术—材料科学与工程]