期刊
JOURNAL OF APPLIED PHYSICS
卷 108, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3480805
关键词
copper alloys; entropy; metallic glasses; nickel alloys; palladium alloys; phosphorus alloys; viscosity; viscosity measurement; vitrification
资金
- National Science Foundation [DMR-0205940]
- Deutsche Forschungsgemeinschaft
The thermodynamic functions of the bulk metallic glass (BMG) forming Pd43Ni10Cu27P20 alloy are determined calorimetrically as a function of temperature. Along with eight other BMG forming alloys, the available experimental thermodynamic and viscosity data are reassessed. For each alloy, consistent Vogel-Fulcher-Tammann (VFT) fits of the viscosity measurements are established, and the temperature dependence of the configurational entropy is calculated from thermodynamic data. Together with the VFT fits, fits to the Adam-Gibbs equation are performed using this configurational entropy change. We find remarkable agreement between the Adam-Gibbs and VFT fits. Moreover, the temperature T-0 is obtained from the VFT fits at which the viscous flow diverges. This T-0 matches very well the temperature where the configurational entropy vanishes in the corresponding Adam-Gibbs fits. (C) 2010 American Institute of Physics. [doi:10.1063/1.3480805]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据