Haichao Zhao, Yulin Qiao, Xian Du, Sijie Wang, Qing Zhang, Yan Zang. Effect and Mechanism of Energy Density on the Aluminum Alloy Paint Cleaned by Laser[J]. Laser & Optoelectronics Progress, 2020, 57(13): 131403

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- Laser & Optoelectronics Progress
- Vol. 57, Issue 13, 131403 (2020)

Fig. 1. Schematic of optical fiber laser cleaning device

Fig. 2. Cleaning method of paint

Fig. 3. Three-dimensional morphology of cleaning surface after laser cleaning once with different energy densities. (a) 7.32 J/cm2; (b) 8.37 J/cm2; (c) 9.42 J/cm2; (d) 10.46 J/cm2; (e) 11.51 J/cm2; (f) 12.56 J/cm2; (g) 13.60 J/cm2; (h) 14.65 J/cm2

Fig. 4. Three-dimensional morphology of cleaning surface after laser cleaning twice at different energy densities. (a)-(c) 7.32 J/cm2; (d)-(f) 9.42 J/cm2; (g)-(i) 11.51 J/cm2; (j)-(l) 13.60 J/cm2

Fig. 5. SEM images of laser cleaning surface with different energy densities. (a)(e) 11.51 J/cm2; (b) 14.65 J/cm2; (c) 7.32 J/cm2; (d) 9.42 J/cm2; (f) 13.60 J/cm2

Fig. 6. Binding energy spectra for the constituent elements after cleaning twice with energy density of 9.42 J/cm2. (a) C 1s; (b) O 1s; (c) Al 2p; (d) Ti 2p

Fig. 7. Schematic of mechanism of paint removal with laser
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Table 1. Surface roughness of cleaning surface after laser cleaning once with different energy densities
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Table 2. Surface roughness of cleaning surface after laser cleaning twice with different energy densities
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Table 3. EDS results of cleaning surface after laser cleaning twice with different energy densities
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Table 4. Binding mode of C, O, Al, and Ti on the cleaning surface after laser cleaning twice with energy density of 9.42 J/cm2

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