| 基于扩散势能和自由体积的自扩散系数模型 |
| |
| 引用本文： | 尹小勇,宋海华.基于扩散势能和自由体积的自扩散系数模型[J].化学物理学报(中文版),2006,19(6):488-492. |
| |
| 作者姓名： | 尹小勇 宋海华 |
| |
| 作者单位： | 天津大学化工学院,天津,300072;天津大学化工学院,天津,300072 |
| |
| 摘 要： |
|
| 关 键 词： | 自由体积 局部临界扩散势能 自扩散系数 对相关函数 |
Self-diffusion Coefficient Model Based on Activation Energy and Free Volume |
| |
| Xiao-yong Yin,Hai-hua Song.Self-diffusion Coefficient Model Based on Activation Energy and Free Volume[J].化学物理学报(中文版),2006,19(6):488-492. |
| |
| Authors: | Xiao-yong Yin Hai-hua Song |
| |
| Institution: | {{each article.affiliations aff i}}
{{if aff.addressEn && aff.addressEn != ""}}
{{if aff.label && aff.label != "" && article.affiliations.length != 1}}{{@ aff.label}}.{{/if}}{{@ aff.addressEn}}{{/if}}
{{/each}} |
| |
| Abstract: | A new model for self-diffusion coe±cients was proposed based on both the concepts of molecular free volume and activation energy. The unknown parameters of this model were clearly defined and compared with the Chapman-Enskog model. At the same time a new method for calculating activation energy was devised and applied to the new model. In addition, the free volume was defined by implementing the generic van der Waals equation of state, the radial distribution function of which was obtained by using the MorsaliGoharshadi empirical formula. Under the same conditions, the new model was better than the original free volume model. |
| |
| Keywords: | Free volume Potential energy barrier Self-diffusion coefficient Pair correlation function |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化学物理学报(中文版)》浏览原始摘要信息 |
| 点击此处可从《化学物理学报(中文版)》下载免费的PDF全文 |
