Objective: To study the micro structure of interfacial region Cu/Zn diffusion couple at 250◦C and its evolution with time. Methods: The was prepared by a bonding technique then annealed 250 ◦C in Argon atmosphere. resulting from reactions studied scanning electron microscopy energy dispersive X-ray. Findings: Two continuous inter metallic phase layers formed interface between Cu Zn metals. were...

Ge and B diffusion was studied in nano-crystalline Si, and Pd and Si self-diffusion was studied in nano-crystalline Pd2Si during and after Pd/Si reactive diffusion. These experiments showed that grain boundary (GB) diffusion kinetic is the same in microand nano-GBs, whereas triple junction (TJ) diffusion is several orders of magnitude faster than GB diffusion. In addition, GB segregation and GB...

We have used dynamic Monte Carlo(DMC) methods and analytical techniques to analyze single-file systems for which diffusion is infinitely fast. We have simplified the master equation removing the fast reactions, and we have introduced a DMC algorithm for infinitely fast diffusion. The DMC method for fast diffusion give similar results as the standard DMC with high diffusion rates. We have invest...