A new analysis method based on the Onsager reciprocal relations for interdiffusion in a multicomponent melt

Abstract

It is a significantly difficult problem to obtain the diffusion coefficients by analyzing the concentration profiles in multicomponent melts. Here, based on the Onsager reciprocal relations, we report a new analysis method, which can achieve the diffusion coefficient matrix by fitting the concentration profiles under a given diffusion time. Our method allows us to obtain the interdiffusion coefficient matrix in a multicomponent system via just a single diffusion couple experiment. Thus, it shows obvious merits compared to the previously reported diffusion path method and the square root diffusivity method. As a qualifying example, the four independent interdiffusion coefficients in a Ce–Al–Cu ternary liquid alloy have been derived from the concentration profiles measured by the multi-slice sliding cell technique. It is demonstrated that such a single experiment analysis method shows great potential for wide use in a multicomponent system.

[Retracted] An Analysis of the Cultivation Methods of Visual Communication Design in New Media Environment

“…With reference to the production process, students can operate step by step and give full play to their creative ability. When evaluating students' projects, teachers not only focus on the results of the project, but also pay more attention to the creative process of students, and comprehensively analyze their comprehensive quality in the process of project design [ 15 ].…”