New Analyzing Approaches for In Situ Interdiffusion Experiments to Determine Concentration-Dependent Diffusion Coefficients in Liquid Al–Au

Interdiffusion coefficients are key parameters for the solidification process of liquid alloys. However, determination interdiffusion in metals at high temperatures is a challenging and extensive task, due to variety potential systematic errors. In recent years we have developed an X-ray situ shear cell method measurement binary metallic melts. This technique enables monitoring experiment order exclude fatal Utilizing contrast, also provides time-resolved concentration distribution. Such data set contains significantly more information than ex evaluated experiments. Available analyzing strategies do not fully exploit this yet. We present three new approaches that able retrieve concentration-dependent coefficient from only one set. way, larger differences become accessible experiment, which considerably decreases efforts. Using simulations, checked robustness. Furthermore, run on real (0 9 at% Au-content) Al–Au alloy 1000 °C results within measured range.