摘要
热喷涂技术是再制造的关键支撑技术之一,热喷涂涂层与基体之间的异质界面对涂层性能有非常重要的影响.分形作为表征复杂结构形貌特征的有效手段,在材料科学领域已经实现了广泛的应用,热喷涂涂层的表面以及基体与涂层相结合的界面具有天然的自相似性和分形特征,所以通过分形理论和分形方法研究热喷涂涂层具有重要意义.本文围绕分形维数表征对喷涂涂层、结合界面、涂层性能以及涂层沉积生长机理进行总结梳理,分析表面分形维数与涂层形貌的定量关系,为研究涂层表面形貌及相关问题提供了新的方法.在未来可以围绕分形理论在喷涂熔滴的铺展行为方面进行微观的生长特性和裂纹萌生的研究,实现对涂层的质量控制,解决实际的结合强度问题.
Thermal spraying technology is one of the key supporting technologies of remanufacturing,and the heterogeneous interface between thermal spray coating and substrate has a significant impact on the coating performance.As an effective means to characterize the morphology of complex structures,fractal has been widely used in the field of materials science.The surface of thermal spray coatings and the interface be tween substrate and coating inherently exhibit self-similarity and fractal characteristics,so it is of great significance to study thermal spray coat ings using fractal theory and methods.In this paper,the fractal dimension characterization of spray coatings,bonding interfaces,coating prop erties,and coating deposition growth mechanisms was systematically reviewed.The quantitative relationship between surface fractal dimension and coating morphology was analyzed,providing a new method for investigating coating surface morphology and related issues.Furthermore,fu ture research could focus on applying fractal theory to investigate the microscopic growth characteristics and crack initiation during the spreading behavior of sprayed molten droplets,to achieve coating quality control and solve practical bonding strength problems.
作者
王瑞
王海
李嘉杞
王海斗
孙晓峰
马国政
柳建
郭永明
WANG Rui;WANG Hai;LI Jiaqi;WANG Haidou;SUN Xiaofeng;MA Guozheng;LIU Jian;GUO yongming(National Engineering Research Center for Remanufacturing of Mechanical Products,The Armored Forces Academy of the People's Liberation Army of China,Beijing 100072,China;National Defense Key Laboratory of Equipment Remanufacturing Technology,The Armored Forces Academy of the People's Liberation Army of China,Beijing 100072,China;School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;West-East Gas Transmission Branch,National Petroleum and Natural Gas Pipeline Network Group Co.,Ltd.,Shanghai 200122,China;Shandong Tianrun Zhongcheng Additive Manufacturing Co.,Ltd.,Weihai 264400,China)
出处
《材料保护》
2025年第8期69-79,共11页
Materials Protection
基金
国家自然科学基金项目(52105234,52075543,52130509)。
关键词
热喷涂
结合界面
分形理论
分形表征
thermal spraying
bonding interface
fractal theory
fractal characterization
