|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Hume-Rothery Award Symposium: Alloy Phase Chemistry at the Atomic Level - Opportunities and Challenges
||Diffusivity Determination of Slow Diffusion Systems using Diffusion Couples and Multiples
||Zhangqi Chen, Ji-Cheng Zhao
|On-Site Speaker (Planned)
Diffusion coefficient is one of the fundamental properties in material science. Both diffusion couple and tracer experiments have been employed in the last several decades to obtain diffusion profiles for extraction of diffusion coefficients. For very slow diffusion systems, diffusion couple experiments are challenging since thousands of hours of annealing are required to obtain wide enough diffusion distance for reliable composition profiles for diffusivity extraction. A new analytical method is developed to extract diffusion coefficients from very steep composition profiles for slow diffusion systems. The Ti-Mo, Ti-Nb and Ti-Ta binary systems in Ti-Mo-Nb-Ta-Zr diffusion multiples are employed as examples to demonstrate the new analysis. This new analysis will accelerate the diffusion data gathering for the challenging slow diffusion systems.
||Planned: Supplemental Proceedings volume