锆基合金表面仿生织构设计及润湿性仿真研究  

Biomimetic Texture Design and Wettability Simulation Study of Zirconium-based Alloy

作　　者：曹志涛 郑清春[1,2] 郝佳丽 杨小洋 刘鑫 张春秋[1,2] 胡亚辉[1,2] CAO Zhitao;ZHENG Qingchun;HAO Jiali;YANG Xiaoyang;LIU Xin;ZHANG Chunqiu;HU Yahui(Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,Tianjin University of Technology,Tianjin 300384,China;National Demonstration Center for Experimental Mechanical and Electrical Engineering Education(Tianjin University of Technology),Tianjin 300384,China;Tianjin Bone Implant Interface Functionalization and Personalization Research Enterprise Key Laboratory,Tianjin 300190,China)

机构地区：[1]天津理工大学天津市先进机电系统设计与智能控制重点实验室,天津300384 [2]机电工程国家级实验教学示范中心(天津理工大学),天津300384 [3]天津市骨植入物界面功能化与个性化研究企业重点实验室,天津300190

出　　处：《润滑与密封》2024年第10期117-121,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(11672208,81741141);天津市企业重点实验室开放基金项目(SY-04-202301-004);教育部高等教育航海技术教指委教改项目(2022jzw026);天津理工大学2023年校级研究生科研创新实践项目(YJ2309)。

摘　　要：为探究锆基合金织构化表面微润滑机制,在锆基合金表面制备一种类似树蛙趾端表面多边形棱柱结构的仿生织构,利用ANSYS Fluent软件在模拟织构表面并建立液滴铺展模型,分析不同织构参数(织构边长、织构间距)下仿生织构表面的亲水性能。结果表明:六边形织构在相同面积率下可提供最长的凹槽长度及最长的织构边缘长度,在各多边形织构中具有较强的亲水效果;织构间距、织构边长与接触角之间均存在明显线性关系,接触角随织构间距的增大而减小,随织构边长的增大而增大,因此可通过调整织构边长与织构间距实现对亲水性能的改善。在研究的织构边长和织构间距范围内,锆基合金织构表面的接触角都低于光滑合金表面的接触角,表明建立的仿生织构表面改善了锆基合金的亲水性。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 performance 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.

关 键 词：锆基合金 润湿性 微织构 接触角 仿生织构设计 

分 类 号：TH117.2[机械工程—机械设计及理论] TG178[金属学及工艺—金属表面处理]