期刊
APPLIED SURFACE SCIENCE
卷 402, 期 -, 页码 400-409出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.01.026
关键词
Structural coloration; Micro-grating; Elliptical vibration texturing; Vibration-assisted machining
类别
资金
- Innovation and Technology Fund, Hong Kong [ITS/014/15]
- Chinese University of Hong Kong [3132823]
- Research Grants Council of Hong Kong [ECS 24201816]
Creating orderly periodic micro/nano-structures on metallic surfaces, or structural coloration, for control of surface apparent color and optical reflectivity has been an exciting research topic over the years. The direct applications of structural coloration include color marking, display devices, and invisibility cloak. This paper presents an efficient method to colorize metallic surfaces with periodic micro/nano-gratings using elliptical vibration texturing. When the tool vibration is coupled with a constant cutting velocity, controlled periodic ripples can be generated due to the overlapping tool trajectory. These periodic ripples with a wavelength near visible spectrum can act as micro-gratings to introduce iridescent colors. The proposed technique also provides a flexible method for color marking of metallic surfaces with arbitrary patterns and images by precise control of the spacing distance and orientation of induced micro/nanoripples. Theoretical analysis and experimental results are given to demonstrate structural coloration of metals by a direct mechanical machining technique. (C) 2017 Published by Elsevier B.V.
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