Improved Method for the Self-Diffusion Coefficient in the Modified Free Volume Theory: Simple Fluids

2009 ◽  
Vol 113 (14) ◽  
pp. 4751-4755 ◽  
Author(s):  
Yuan Qin ◽  
Byung Chan Eu
Keyword(s):  
Diffusion Coefficient ◽  
Free Volume ◽  
The Self ◽  
Improved Method ◽  
Free Volume Theory ◽  
Simple Fluids ◽  
Self Diffusion ◽  
Self Diffusion Coefficient

scholarly journals Simultaneous free-volume modeling of the self-diffusion coefficient and dynamic viscosity at high pressure

2004 ◽  
Vol 69 (3) ◽  
Author(s):  
C. Boned ◽  
A. Allal ◽  
A. Baylaucq ◽  
C. K. Zéberg-Mikkelsen ◽  
D. Bessieres ◽  
...  
Keyword(s):  
High Pressure ◽  
Diffusion Coefficient ◽  
Free Volume ◽  
Dynamic Viscosity ◽  
The Self ◽  
Self Diffusion ◽  
Volume Modeling ◽  
Self Diffusion Coefficient

Investigation on the Diffusion Behavior of Mo-Ni Interface

2010 ◽  
Vol 152-153 ◽  
pp. 1607-1610 ◽  
Author(s):  
Wei Chan Cao ◽  
Shu Hua Liang ◽  
Yue Xin Xue ◽  
Xian Hui Wang
Keyword(s):  
Solid Solution ◽  
Diffusion Coefficient ◽  
Electron Microscope ◽  
Intermetallic Compound ◽  
Diffusion Layer ◽  
Interdiffusion Coefficient ◽  
The Self ◽  
Diffusion Behavior ◽  
Self Diffusion ◽  
Self Diffusion Coefficient

In order to gain a deep insight into the mechanism of Ni-doped Mo activated sintering process, the diffusion behavior of Mo-Ni interface was studied utilizing a Mo-Ni diffusion couple. The phase structure and composition on the diffusion layer were characterized and analyzed by means of scanning electron microscope and transmission electron microscope, the self diffusion coefficient and interdiffusion coefficient were calculated. The results show that a diffusion layer is formed between Mo and Ni after sintering at 1223k for 1h, which is comprised of a δ-NiMo intermetallic compound and a limit solid solution containing small amounts of nickel. The self diffusion coefficient and interdiffusion coefficient are 2.068×10-18cm2/s and 4.5×10-12cm2/s, respectively. It is suggested that the diffusion rate of Mo in δ-NiMo intermetallic compound and a limit solid solution containing small amounts of nickel is 106 times bigger than that of self diffusion, and the intermetallic compound layer provides a short diffusion path for Mo activated sintering.

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