Simultaneous Determination of Grain Boundary Diffusion Coefficients and Segregation Factors of Solute Atoms in Cu and Ag Polycrystals from Diffusion Measurements in Different Kinetic Regimes

1996 ◽  
Vol 207-209 ◽  
pp. 481-484 ◽  
Author(s):  
T. Surholt ◽  
Christian Herzig
2009 ◽  
Vol 289-292 ◽  
pp. 763-767 ◽  
Author(s):  
Z. Balogh ◽  
Z. Erdélyi ◽  
Dezső L. Beke ◽  
Alain Portavoce ◽  
Christophe Girardeaux ◽  
...  

Diffusion controlled processes play a crucial role in the degradation of technical materials. At low temperatures the most significant of them is the diffusion along grain boundaries. In thin film geometry one of the best methods for determining the grain boundary (GB) diffusion coefficient of an impurity element is the Hwang-Balluffi method, in which a surface sensitive technique is used to follow the surface accumulation kinetics. Results of grain boundary diffusion measurements, carried out in our laboratory by this method in three different materials systems (Ag/Pd, Ag/Cu and Au/Ni) are reviewed. In case of Ag diffusion along Pd GBs the surface accumulation was followed by AES method. The data points can be well fitted by an Arrhenius function with an activation energy Q=0.99eV


2000 ◽  
Vol 162-163 ◽  
pp. 213-218 ◽  
Author(s):  
Z. Erdélyi ◽  
Ch. Girardeaux ◽  
G.A. Langer ◽  
L. Daróczi ◽  
A. Rolland ◽  
...  

2001 ◽  
Vol 89 (7) ◽  
pp. 3971-3975 ◽  
Author(s):  
Z. Erdélyi ◽  
Ch. Girardeaux ◽  
G. A. Langer ◽  
D. L. Beke ◽  
A. Rolland ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document