Laser treatment of a steel surface in ambient air

Péreira, A.; Delaporte, Philippe; Sentís, M.; Cros, A.; Marine, W.; Basillais, Armelle; Thomann, Anne-Lise; Leborgne, C.; Semmar, Nadjib; Andreazza, Pascal; Sauvage, Thierry

doi:10.1016/j.tsf.2003.11.072

Cited by 49 publications

(26 citation statements)

References 16 publications

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“…Here we address the backward deposition of ablation products as the formation of a deposited layer strongly affects the properties of surfaces after laser processing. Backward deposition of the ablated product around the laser-irradiated area is a known effect for polymer ablation [85], synthesis of silicon nanoclusters [86,87], modification of steel surfaces by backward deposit resulting in change of surface properties in terms of adhesion or mechanical characteristics [88].…”

Section: Backward Deposition Of Ablation Productsmentioning

confidence: 99%

Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces

et al. 2014

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Abstract:In spite of the fact that more than five decades have passed since the invention of laser, some topics of laser-matter interaction still remain incompletely studied. One of such topics is plasma impact on the overall phenomenon of the interaction and its particular OPEN ACCESSMicromachines 2014, 5 1345 features, including influence of the laser-excited plasma re-radiation, back flux of energetic plasma species, and massive material redeposition, on the surface quality and processing efficiency. In this paper, we analyze different plasma aspects, which go beyond a simple consideration of the well-known effect of plasma shielding of laser radiation. The following effects are considered: ambient gas ionization above the target on material processing with formation of a "plasma pipe"; back heating of the target by both laser-driven ambient and ablation plasmas through conductive and radiative heat transfer; plasma chemical effects on surface processing including microstructure growth on liquid metals; complicated dynamics of the ablation plasma flow interacting with an ambient gas that can result in substantial redeposition of material around the ablation spot. Together with a review summarizing our main to-date achievements and outlining research directions, we present new results underlining importance of laser plasma dynamics and photoionization of the gas environment upon laser processing of materials.

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Section: Backward Deposition Of Ablation Productsmentioning

confidence: 99%

Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces

et al. 2014

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“…Research group Starting material Laser line Titanium (Pérez del Pino et al 2002) Titanium targets =1064 nm (Lavisse, L. et al 2002) Titanium targets =1064 nm (Camacho-López, S. et al 2008) Titanium thin films =532 nm Chromium (Dong, Q. et al 2002) Chromium films =1064 nm Steel (Pereira, A. et al 2004) Steel target 1064 nm 532 nm Molybdenum Our work Molybdenum Thin Films =532 nm Table 1. Some works on Nd-YAG pulsed laser oxidation.…”

Section: Methodsmentioning

confidence: 99%

“…Some works about pulsed laser oxidation have been reported (Dong, Q. et al, 2002). (Pereira, A. et al 2004) have investigated the laser treatment in steel irradiating at various wavelengths by using different laser sources. In Table 1, we cited some works on the oxidation induced by pulsed laser irradiation in various metals.…”

Section: Introductionmentioning

confidence: 99%

Processing of Metallic Thin Films Using Nd:YAG Laser Pulses

Camacho‐López¹,

Camacho-López²,

Olea-Mejía³

et al. 2012

Nd YAG Laser

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“…This may be the result of a change in the state of impurities and in the defect structure of a stainless steel [16]. The steel surface modification induced by irradiation of several lasers with different wavelengths in air has been studied by Pereira et al [17]. They showed that the carbon from the machining oils is successfully removed under all the experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Generation of ion beams on a steel surface by laser radiation at various wavelengths under the presence of an applied electric field

Khalil

Richardson

2005

Laser Phys. Lett.

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This paper describes the generation of highly stripped ions and high currents in laser produced steel plasma in an applied electric field. A steel target kept under partial vacuum conditions (10 −3 mbar) is irradiated with focused Q-switched Nd:YAG laser radiation of various wavelengths with various pulse durations. The evaporated ions were detected at a distance of 40 mm from the target, after passing through a retarding mesh grid. The laser radiation, with peak intensity between 5.35 × 10 9 to 1 × 10 11 W/cm 2 creates a dense plasma having a high ionization state. The velocity distribution function of the plasma cloud emitted from the plasma is investigated using a Faraday cup. The dependence of the current signals on various parameters, such as laser power, laser wavelengths, pulse widths and argon (Ar) pressure, is described. In addition the I-V characteristics of the plasma in the presence of glow discharge were studied with and without laser radiation. In general, an increase in the plume current was observed as the mesh voltage is increased, and is related to arc formation. The possibility to find microablation was noted by using Reflection Optical Microscope (ROM).

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Laser treatment of a steel surface in ambient air

Cited by 49 publications

References 16 publications

Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces

Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces

Processing of Metallic Thin Films Using Nd:YAG Laser Pulses

Generation of ion beams on a steel surface by laser radiation at various wavelengths under the presence of an applied electric field

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