材料科学
复合材料
飞秒
激光器
环氧树脂
扫描电子显微镜
辐射
胶粘剂
纤维
光学
物理
图层(电子)
作者
V. Oliveira,Shabnam Sharma,M.F.S.F. de Moura,R.D.F. Moreira,R. Vilar
标识
DOI:10.1016/j.optlaseng.2017.02.011
摘要
In the present work, we investigate the surface treatment of carbon fiber-reinforced polymer (CFRP) composites by laser ablation with femtosecond laser radiation. For this purpose, unidirectional carbon fiber-reinforced epoxy matrix composites were treated with femtosecond laser pulses of 1024 nm wavelength and 550 fs duration. Laser tracks were inscribed on the material surface using pulse energies and scanning speeds in the range 0.1–0.5 mJ and 0.1–5 mm/s, respectively. The morphology of the laser treated surfaces was investigated by field emission scanning electron microscopy. We show that, by using the appropriate processing parameters, a selective removal of the epoxy resin can be achieved, leaving the carbon fibers exposed. In addition, sub-micron laser induced periodic surface structures (LIPSS) are created on the carbon fibers surface, which may be potentially beneficial for the improvement of the fiber to matrix adhesion in adhesive bonds between CFRP parts.
科研通智能强力驱动
Strongly Powered by AbleSci AI