A solid–liquid interface enhancement algorithm for X-ray in situ observation of space materials

Abstract

China Manned Space Station has planned a high-temperature material science experimental rack designed to study the mechanism of the material preparation process under microgravity conditions. The X-ray real-time observation module observes the solid–liquid interface morphology and interface transport effect in situ during sample preparation, an important component of high temperature rack. Aiming at the sparsity of X-ray images of space high temperature materials, a solid–liquid interface enhancement algorithm for X-ray in situ observation of space materials is proposed to solve low contrast and blurry interface of X-ray images. Compared with the existing methods, the algorithm enhances the contrast and provides a new idea for solving the material interface dynamics from the perspective of image. The enhanced image can accurately calculate the moving speed of the solid–liquid interface of the materials, and the interface dynamics of material growth can be effectively studied by combining the temperature measured in the experiment. This research is of great significance for studying growth mechanisms of materials and guiding the preparation of foundation materials.

Keywords

• Solid-liquid interface enhancement
• X-ray in situ observation
• Discrete curvelet transform
• High-temperature space materials
• Dynamics of interface