Synchrotron radiation imaging-based visual alloy melt interdiffusion measuring method

Abstract

The invention discloses a synchrotron radiation imaging-based visual alloy melt interdiffusion measuring method which is characterized by comprising the following steps: 1, diffusion sample preparation and imaging device assembly; 2, synchrotron radiation imaging determination on alloy melt diffusion; and 3, acquisition of alloy melt interdiffusion coefficients. By using the method, a real-time component spectrum of a diffusion couple can be obtained in an in-situ and visual manner, so that the influences of factors, such as diffusion in convection, heating and cooling processes, on alloy melt interdiffusion measuring can be effectively removed, and the measuring accuracy of the alloy melt interdiffusion coefficients can be obviously improved.

Description

technical field [0001] The invention relates to a method for measuring interdiffusion coefficients applicable to binary and multi-element alloys and other non-metallic materials in a molten state, in particular to a method for measuring interdiffusion in visualized alloy melts based on synchrotron radiation imaging. Background technique [0002] As a basic mass transfer process, diffusion is the prerequisite for the realization of many physical and chemical processes. Many processes, such as the preparation and use of materials, are closely related to the diffusion of substances inside the material. [0003] In the alloy melt, the diffusion process also has a significant impact on many mass transfer processes. For example, in the equilibrium solidification process, the diffusion coefficient is the core parameter of the mass transport properties of the melt, and it controls the growth rate of the solid-liquid interface and the interface One of the main parameters of the fron...

AI Technical Summary

Problems solved by technology

This method can eliminate the influence of the heating and cooling process on the measurement of the interdiffusion coefficient and greatly improve the measurement accuracy. However, because the experimental technique is too fine and complicated, it not only brings great difficulty to the processing process, but also complicates the operation. Facilitate the measurement of a large number of diffusion experiments

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