Effect of surface modification on wettability and tribology by laser texturing in Al2O3
- Resource Type
- Authors
- Chengjuan Yang; Shuxian Zheng; Syed Husain Imran Jaffery; Yani Xia; Huan Qi; Xiubing Jing
- Source
- Applied Optics. 60:4434
- Subject
- Materials science
Scanning electron microscope
business.industry
Analytical chemistry
Microstructure
01 natural sciences
Atomic and Molecular Physics, and Optics
Surface energy
010309 optics
Contact angle
Optics
X-ray photoelectron spectroscopy
visual_art
0103 physical sciences
visual_art.visual_art_medium
Surface modification
Wetting
Ceramic
Electrical and Electronic Engineering
business
Engineering (miscellaneous)
- Language
- ISSN
- 2155-3165
1559-128X
The life of ceramic tools restricts the development of the manufacturing industry and can be increased through the enhancement of surface performance. Laser surface texturing is a feasible technology to improve ceramic tool life based on the relationship between surface properties and the laser-texturing process. In this study, A l 2 O 3 substrates have been textured by an ytterbium fiber laser system with a wavelength of 1064 nm and a pulse duration of 50 ns. First, the damage threshold of A l 2 O 3 was measured to provide a basis for selecting laser-texturing parameters. The surface morphology was characterized using a white confocal scanning microscope and a scanning electron microscope to investigate the characteristics of laser processing. Water contact angles were measured to investigate the relationship between laser parameters and changes in wettability. The surface energy of the superhydrophobic ceramic was calculated based on the contact angle. Combined X-ray photoelectron spectroscopy (XPS) measurement was used to explore the mechanism of wettability changes from the chemical component and microstructure perspectives. The friction coefficient of A l 2 O 3 was determined by a ball-on-disc wear test. The results showed that laser texturing can significantly improve the surface hydrophobicity and friction stability.