Effect of stationary femtosecond laser irradiation on substructures’ formation on a mold stainless steel surface

2013 ◽  
Vol 270 ◽  
pp. 197-204 ◽  
Author(s):  
P. Bizi-bandoki ◽  
S. Valette ◽  
E. Audouard ◽  
S. Benayoun
Keyword(s):  
Stainless Steel ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Steel Surface ◽  
Femtosecond Laser Irradiation ◽  
Stainless Steel Surface

The formation of periodic micro/nano structured on stainless steel by femtosecond laser irradiation

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744004
Author(s):  
Caizhen Yao ◽  
Wei Gao ◽  
Yayun Ye ◽  
Yong Jiang ◽  
Shizhen Xu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Irradiation ◽  
Steel Surface ◽  
Periodic Structures ◽  
Atomic Ratio ◽  
Femtosecond Laser Irradiation ◽  
Beam Polarization ◽  
Environmental Scanning ◽  
Stainless Steel Surface ◽  
Hydrophobic Property

Stainless steel surface was irradiated by linear polarized laser (800 nm, 35 fs, 4 Hz and 0.7 J/cm2) with different pulse numbers. Environmental scanning electron microscope (ESEM/EDS) was used for detailed morphology, microstructure and composition studies. The wettability of irradiated steel surface was tested by Interface Tensiometer JC-2000X and compared with untreated stainless steel. Results showed that micro/nanostripes with different periods were formed. The period increased with the increasing pulse numbers from 450 nm for 90 pulses to 500 nm for 180 pulses. The orientation of those stripes was parallel with the laser beam polarization. Nanoparticles were observed on those periodic structures. EDS indicated that the atomic ratio of Cr increased and the atomic ratios of Fe and Ni decreased after laser irradiation, which may enhance the corrosion resistance due to the Cr-rich layer. The prepared structure exhibited hydrophobic property without further treatment. The formation mechanism of micro/nanoperiodic structures was also explored.

Microstructures on Stainless Steel Surface Induced by Femtosecond Laser Pulse

2013 ◽  
Vol 50 (11) ◽  
pp. 111406
Author(s):  
吴勃 Wu Bo ◽  
周明 Zhou Ming ◽  
李保家 Li Baojia ◽  
蔡兰 Cai Lan
Keyword(s):  
Stainless Steel ◽  
Laser Pulse ◽  
Femtosecond Laser ◽  
Femtosecond Laser Pulse ◽  
Steel Surface ◽  
Stainless Steel Surface

Broadband absorption of nanostructured stainless steel surface fabricated by nanosecond laser irradiation

2020 ◽  
Vol 31 (17) ◽  
pp. 175301
Author(s):  
Md Abu Taher ◽  
Sajin Ponnan ◽  
Hiteswar Prasad ◽  
Desai Narayana Rao ◽  
Sri Ram G Naraharisetty
Keyword(s):  
Stainless Steel ◽  
Laser Irradiation ◽  
Steel Surface ◽  
Nanosecond Laser ◽  
Stainless Steel Surface ◽  
Broadband Absorption

Submillimeter Micropart Feeding Along an Asymmetric Femtosecond-Laser-Microfabricated Surface

2009 ◽  
Vol 3 (2) ◽  
pp. 151-156 ◽  
Author(s):  
Atsushi Mitani ◽  
◽  
Shinichi Hirai ◽  
Keyword(s):  
Stainless Steel ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Periodic Structures ◽  
Friction Angle ◽  
Femtosecond Laser Irradiation ◽  
Laser Technology ◽  
Feed Velocity ◽  
Inclined Surfaces ◽  
The Relationship

Femtosecond laser technology forms minute, stable gratings on such materials as silicon and stainless steel. Forming a periodic structure on the surfaces of sliding parts improves tribology characteristics because adhesion decreases with reductions in area of contact. Double-pulsed femtosecond laser irradiation generates periodic structures with asymmetric profiles, along which, as we have shown elsewhere, microparts such as ceramic chip capacitors and resistors can be fed using simple symmetric planar vibration. Microparts move unidirectionally because they adhere to these surfaces asymmetrically. In testing the feasibility of feeding 0402 capacitors 0.4 × 0.2 × 0.2 mm in size and 0.1 mg weighting along an asymmetric surface fabricated using double-pulsed femtosecond laser irradiation, we evaluated differences in the profiles of the two inclined surfaces, effects of decreased adhesion, the forward and backward coefficient of friction, and the bidirectional friction angle of 0402 capacitors. Based on feed experimental results, we assessed the relationship between drive frequency and feed velocity and, by calculating variations in feed velocity, feed stability.

scholarly journals Quantitative assessment of structural and compositional colors induced by femtosecond laser: A case study on 301LN stainless steel surface

2019 ◽  
Vol 484 ◽  
pp. 655-662 ◽  
Author(s):  
Xinying Shi ◽  
Zhongjia Huang ◽  
Miku J. Laakso ◽  
Frank Niklaus ◽  
Rafal Sliz ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Femtosecond Laser ◽  
Quantitative Assessment ◽  
Steel Surface ◽  
Stainless Steel Surface
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