Thermodynamic interdiffusion coefficient in binary systems with intermediate phases |
| |
| Affiliation: | 1. Materials Processing Division, Bhabha Atomic Research Centre, Mumbai-400085, India;2. Materials Science Division, Bhabha Atomic Research Centre, Mumbai-400085, India;1. School of Materials Science and Engineering, Beihang University (BUAA), No. 37 Xueyuan Road, Beijing 100191, China;2. Beijing Key Laboratory for Advanced Functional Material and Thin Film Technology, Beihang University (BUAA), No. 37 Xueyuan Road, Beijing 100191, China;3. Key Laboratory of Aerospace Materials & Performance (Ministry of Education), Beihang University (BUAA), No. 37 Xueyuan Road, Beijing 100191, China;1. Benemérita Universidad Autónoma de Puebla, Instituto de Física “Ing Luis Rivera Terrazas”, Apartado Postal J-48, Puebla, 72570, Mexico;2. Universidad Nacional Autónoma de México, Centro de Nanociencias y Nanotecnología, Apartado Postal 14, Ensenada, Baja California, 22800, Mexico;1. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran;2. Department of Metallurgy and Materials Engineering, Faculty of Engineering, Roudehen Branch, Islamic Azad University, P.O. Box 189, Roudehen, Tehran, Iran |
| |
| Abstract: | A new form of diffusion coefficient, termed the thermodynamic interdiffusion coefficient has been introduced in this investigation; it is related to the conventional chemical interdiffusion coefficient and thermodynamic properties of the system. Three main advantages in using the thermodynamic interdiffusion coefficient are described by applying this alternative approach of diffusion analysis, as an example, to the Al–Ni system. These include (1) a better interpretation of the relative diffusivities in the different phases of the same system, (2) estimation of appropriate values of the activation energy of the diffusion process and (3) determination of the thermodynamic intrinsic diffusion coefficient (also known as the tracer diffusion coefficient) in an intermediate phase with narrow homogeneity range, which otherwise is not possible without tracer diffusion experiments. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
