科研之友
微信
新浪微博
Facebook
分享链接
摘要
The mechanism of pulse electric field effecting on liquid metal clusters was analyzed by using theory of electron polarization, based on latest progress of molecular dynamics simulation. Pulse electric field force makes electron cloud around cluster deformed so that clusters tended lobe dissociated. As average binding energy properties among Al melt clusters are different, clusters having low average binding energy were remained and proportion of stable clusters was increased; average size of clusters and the size of big clusters got smiler after electric pulse treatment. Through thermodynamic analysis, pure Al nucleation undercooling increased and latent heat decreased, that is initial nucleation temperature and solidification equilibrium temperature fall on the cooling curve. Results of verification experiment on pure Al shown that initial nucleation temperature and solidification equilibrium temperature have decreased by 2.41 degrees C and 2.90 degrees C respectively after electric pulse treatment.
- 出版日期2011
- 单位北京科技大学
