Title :
Surface texturing of aluminum alloy 2024-T3 via femto- and nanosecond pulse excimer laser irradiation
Author :
Dou, Kai ; Knobbe, Edward T. ; Parkhill, Robert L. ; Wang, Yinmin
Author_Institution :
Environ. Inst., Oklahoma State Univ., Stillwater, OK, USA
Abstract :
Surface texturing effects of aluminum alloy 2024-T3 using femtosecond and nanosecond pulse laser irradiation were studied. The micrographs of the scanning electron microscopy (SEM) were characterized as a function of incident laser fluence. Results indicated that the surface features, ranging from nano to microdimension, can be developed through variation in laser fluence intensities. Two ablation regimes in the logarithmic fluence dependence of the ablated depth for the 500-fs-pulse irradiation were observed. The theoretical analysis for ablation processes is in good agreement with the experimental results.
Keywords :
aluminium alloys; high-speed optical techniques; laser materials processing; scanning electron microscopy; surface texture; 500 fs; SEM; ablated depth; ablation processes; aluminum alloy 2024-T3; femtosecond pulse excimer laser irradiation; fs-pulse irradiation; incident laser fluence; logarithmic fluence dependence; micrographs; nanosecond pulse excimer laser irradiation; scanning electron microscopy; surface features; surface texturing; Aluminum alloys; Laser ablation; Laser theory; Optical materials; Optical pulses; Pulsed laser deposition; Surface cleaning; Surface emitting lasers; Surface morphology; Surface texture;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.883384
