The effects of laser micromachining on surface morphology and wettability of Ti6Al4V

ZHANG Chong; WANG Guan; LIU Zanfeng; ZHANG Yawen

doi:10.7510/jgjs.issn.1001-3806.2021.01.006

LASER TECHNOLOGY > 2021 > 45(1): 31-36. > DOI: 10.7510/jgjs.issn.1001-3806.2021.01.006

ZHANG Chong, WANG Guan, LIU Zanfeng, ZHANG Yawen. The effects of laser micromachining on surface morphology and wettability of Ti6Al4V[J]. LASER TECHNOLOGY, 2021, 45(1): 31-36. DOI: 10.7510/jgjs.issn.1001-3806.2021.01.006

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The effects of laser micromachining on surface morphology and wettability of Ti6Al4V

1.
School of Electromechanical and Engineering, Guangdong University of Technology, Guangzhou 510006, China
2.
Guangdong Sihui Shili Connecting Rod Co. Ltd., Sihui 526200, China

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Received Date: January 12, 2020
Revised Date: March 17, 2020
Published Date: January 24, 2021

Graphical Abstract

Abstract

Abstract

In order to process different microstructures on the Ti6Al4V surface and change its wettability to make the surface superhydrophobic, the nanosecond fiber pulsed laser was used to micro-fabricate the Ti6Al4V surface. The effects of the pulse energy density and the scanning interval on the lattice surface morphology and wettability of 3-D microarrays, linear arrays, and surface microstructures were investigated. The results show that the pulse energy and scanning interval affected the surface morphology parameters S_a, S_d, among which, the S_a and S_d of the rid structure were affected the most, followed by the linear array structure, while the lattice structure affected the smallest. After Ti6Al4V was processed by laser, spontaneous transition from superhydrophilic to hydrophobic or even superhydrophobic will occur on the surface. Microstructures processed with different pulse energies and scanning intervals had different degrees of surface wettability improvement, among which the grid structure had the best improvement on the surface wettability, followed by the linear array, and the worst was the lattice; The maximum and minimum contact angles of the grid, linear array, and lattice structure are 165 °, 160.5 °, 142.4 °; 132.9 °, 97 °, 94.6 °, and the surface parameters S_a and S_d with the maximum contact angle are 0.97μm, 1.38; 1.62μm, 1.04; 4.14μm, 2.39, respectively. This research has certain reference significance for improving the surface wettability of Ti6Al4V.
- laser technique,
- surface morphology,
- wettability,
- Ti6Al4V

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References

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