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8 July 2022 Study of stability and durability of nanosecond pulsed laser coloring on TC4 and ultrafast pulsed laser color erasing
He Zhao, Zhaochen Cheng, Tong Xia, Yuhang Shi, Pu Wang
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Proceedings Volume 12280, 2021 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 1228004 (2022) https://doi.org/10.1117/12.2620479
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only
Abstract
In this study, different colors with a large variation in color gamut were induced by 1064 nm nanosecond pulsed laser on TC4. Then, we tested the stability and durability of the color marking made by nanosecond pulsed laser under various chemical agents and aggressive temperature conditions. The results showed that colors marking on TC4 have high sustainability to acidic and neutral solutions and also can stand the high temperature. Due to the high stability and durability of the induced colors, it is not easy to secondarily revise the colored areas, which will reduce the applicability of laser coloring technology. Here, we proposed using ultrafast pulsed laser to selectively erase the colored areas in ethanol and nitrogen atmosphere. We found that ultrafast pulsed laser had high erasing quality on the colored surface. The ΔE* before and after erasing is less than 7, and the reflectance spectra of erased areas is similar to the untreated areas. These results are essential to provide a proper solution for the lack of applicability and flexibility in laser coloring technology, which can open new perspectives in industrial applications.
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He Zhao, Zhaochen Cheng, Tong Xia, Yuhang Shi, and Pu Wang "Study of stability and durability of nanosecond pulsed laser coloring on TC4 and ultrafast pulsed laser color erasing", Proc. SPIE 12280, 2021 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 1228004 (8 July 2022); https://doi.org/10.1117/12.2620479
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KEYWORDS
Pulsed laser operation
Laser marking
Laser applications
Oxides
Color difference
Ultrafast phenomena
Industrial chemicals
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