Laser fluence, repetition rate and pulse duration effects on paint ablation

Brygo, François; Dutouquet, Christophe; Guern, F. Le; Oltra, R.; Semerok, A.; Weulersse, Jean-Marc

doi:10.1016/j.apsusc.2005.02.143

Cited by 125 publications

(62 citation statements)

References 22 publications

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“…Indeed, the particle transport flow rate does not influence the paint ablation. It is the same for the range of repetition rate studied here (Brygo et al 2006). …”

Section: Influence Of Laser Fluence On Nanoparticle Size Distributionssupporting

confidence: 51%

“…The paint is mainly composed of an organic binder (methacrylic resine) and a mineral load (titanium dioxide particles). It should be noted that in our experimental conditions, neither the repetition rate nor the paint layer thickness has an influence on the ablation process (Brygo et al 2006). The cell is fed with a controlled clean air flow (compressed, oil-free, dried, and filtered air, flowing between 0 and 30 NL/min).…”

Section: Methodsmentioning

confidence: 99%

“…Independent ablated mass measurements show the same variation with this parameter (Dewalle et al 2010). This evolution is only related to the ablation process, which, as mentioned in Section 3, is independent of our operating conditions, including the laser shot number at a given place on the sample (as long as the paint thickness remains above a few tens of micrometers as demonstrated by Brygo et al 2006).…”

Section: Influence Of Laser Fluence On Nanoparticle Size Distributionsmentioning

confidence: 99%

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Influence of Carrier Gas Flow Rate, Laser Repetition Rate, and Fluence on the Size Distribution and Number of Nanoparticles Generated Per Laser Shot During Paint Laser Ablation

Dewalle

Vendel

Weulersse

et al. 2011

Aerosol Science and Technology

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This study focuses on the influence of three operating parameters (gas flow rate, laser repetition rate, and fluence) on the number and size distributions of nanoparticles generated by laser ablation of acrylic paint. These particles, produced by gas-to-particle conversion of vapors generated by polymer vaporization, can have a spherical shape with a 16 nm diameter (called primary particles) but most of them are aggregated primary particles. The most critical parameter is the gas (air) flow rate in the ablation cell. Indeed, the total number of nanoparticles produced per shot increases with the air flow rate, whereas the aggregate size decreases. Indeed, the gas flow rate controls the transit time and the related aggregation duration, which decrease with increasing flow rates. The influence of the air flow rate on the nanoparticle total number produced per shot can be attributed to the evolution of the particle residence time in the setup with the flow rate. In order to validate this point, the setup has been modeled (model based on the Smoluchowski coagulation equations). The model has shown that the primary particle aggregation mainly takes place in a sphere of a few millimetres

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“…Indeed, the particle transport flow rate does not influence the paint ablation. It is the same for the range of repetition rate studied here (Brygo et al 2006). …”

Section: Influence Of Laser Fluence On Nanoparticle Size Distributionssupporting

confidence: 51%

Section: Methodsmentioning

confidence: 99%

Section: Influence Of Laser Fluence On Nanoparticle Size Distributionsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Carrier Gas Flow Rate, Laser Repetition Rate, and Fluence on the Size Distribution and Number of Nanoparticles Generated Per Laser Shot During Paint Laser Ablation

Dewalle

Vendel

Weulersse

et al. 2011

Aerosol Science and Technology

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show abstract

“…In this context, the CEA (French Alternative Energies and Atomic Energy Commission) has developed a prototype for surfaces cleaning called Aspilaser and studied the cleaning of contaminated surfaces such as painted concrete [1][2] and stainless steel [3][4] by excimer or fiber lasers. In regard to metallic components such as pipe systems, the radionuclides are usually in the oxide layer which grows during the operations of the nuclear facility.…”

Section: Introductionmentioning

confidence: 99%

Growth of micrometric oxide layers for the study of metallic surfaces decontamination by laser

et al. 2017

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Abstract. The nuclear industry produces a wide range of radioactive waste in term of level of hazard, contaminants and material. For metallic equipment like steam generators, the radioactivity is mainly located in the oxide surface. In order to study and develop techniques for dismantling and for decontamination in a safe way, it is important to have access to oxide layers with a representative distribution of non-radioactive contaminants. We propose a method of formation of oxide layer on stainless steel 304L with europium (Eu) as contaminant marker. In this method, an Eusolution is sprayed on the stainless steel samples. The specimen are firstly treated with a pulsed nanosecond laser and secondly the steel samples are exposed to a 600°C furnace for various durations in order to grow an oxide layer. The oxide structure and in-depth distribution of Eu in the oxide layer are analysed by scanning electron microscopy coupled with energy dispersive X-ray microanalyzer, and by glow discharge optical emission or mass spectrometry. The oxide layers were grown to thicknesses in the range of 200 nm to 4.5 μm regarding to the laser treatment parameters and the heating duration. These contaminated oxides have a 'duplex structure' with a mean weight percentage of 0.5% of europium in the volume of the oxide layer. It appears that europium implementation prevents the oxide growth by furnace but has no impact on laser heating. These oxide layers are used to study the decontamination of metallic surfaces such as stainless steel 304L using a nanosecond pulsed laser.

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“…The pulse duration has been shown to influence the ablation process 22 , producing a deeper crater and in-turn indirectly affecting analytical measurements. In order to more clearly assess trends on the basis of laser parameters, power density will be employed in the current studies presented here.…”

Section: Operating Conditionsmentioning

confidence: 99%

Geographic Provenancing of Unprocessed Cotton Using Elemental Analysis and Stable Isotope Ratios

Schenk¹

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Laser fluence, repetition rate and pulse duration effects on paint ablation

Cited by 125 publications

References 22 publications

Influence of Carrier Gas Flow Rate, Laser Repetition Rate, and Fluence on the Size Distribution and Number of Nanoparticles Generated Per Laser Shot During Paint Laser Ablation

Influence of Carrier Gas Flow Rate, Laser Repetition Rate, and Fluence on the Size Distribution and Number of Nanoparticles Generated Per Laser Shot During Paint Laser Ablation

Growth of micrometric oxide layers for the study of metallic surfaces decontamination by laser

Geographic Provenancing of Unprocessed Cotton Using Elemental Analysis and Stable Isotope Ratios

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