To investigate the micro lubrication mechanism of textured surfaces in zirconium-based alloys,a biomimetic texture similar to a polygonal prismatic structure on the surface of the toe end of a tree frog was prepared on the surface of zirconium-based alloys.ANSYS Fluent software was used to simulate the textured surface and establish a droplet spreading model to analyze the hydrophilic properties of biomimetic textured surfaces under different texture parameters(texture edge length,texture spacing).The results show that the hexagonal texture can provide the longest groove length and the longest texture edge length under the same area ratio,and has a strong hydrophilic effect in various polygonal textures.There is an obvious linear relationship between texture spacing,texture edge length,and contact angle,and the contact angle decreases with the increase of texture spacing and increases with the increase of texture edge length.Therefore,the hydrophilic per-formance can be improved by adjusting the texture edge length and texture spacing.Within the range of texture edge length and texture spacing studied,the contact angles of the textured surface of zirconium-based alloys are lower than those of smooth alloy surfaces,indicating that the established biomimetic textured surface improves the hydrophilicity of zirconium-based alloys.
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