Cold-Spraying Coupled to Nano-Pulsed Nd-YaG Laser Surface Pre-treatment

Christoulis, Dimitris K.; Guetta, Dafne; Irissou, Éric; Guipont, Vincent; Berger, Marie‐Hélène; Jeandin, Michel; Legoux, Jean-Gabriel; Moreau, Christian; Costil, S.; Boustie, M.; Ichikawa, Yuji; Ogawa, Kōichi

doi:10.1007/s11666-010-9500-5

Cited by 39 publications

(15 citation statements)

References 57 publications

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“…TEM studies have shown that the native oxide film of the substrate is detected at the interface coating-substrate after the impact of the cold sprayed particles ( Ref 12,36). The oxide film is detected after the spraying at the interface coating-substrate but in these regions a weak adhesion is observed.…”

Section: Deposition Of Coldmentioning

confidence: 99%

The Influence of the Substrate on the Deposition of Cold-Sprayed Titanium: An Experimental and Numerical Study

et al. 2010

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The deposition of cold-sprayed titanium on various substrates is studied in this work. A rather coarse powder of titanium (270 + 45 lm) was sprayed under uniform spraying conditions using a cold spray system onto five different substrates: two aluminum-based alloys (AISI 1050-H16 and AISI 2017-T4), copper, stainless steel AISI 304L, and Ti-6Al-4V. All the spraying experiments were carried out using alternatively nitrogen (N 2 ) or helium (He) as the process gas. Thick coatings were formed on the various substrates, with the exception of the AISI 2017 substrate. When N 2 was used as the process gas, only a few particles remained adhering to the AISI 2017. The thick pre-existing superficial oxide layer on AISI 2017, which was detected by Electron MicroProbe Analysis (EPMA), appeared to prevent adhesion of cold-sprayed titanium particles. The interaction of the sprayed particles with the various substrates was also studied by means of numerical simulations to better understand the adhesion mechanisms. The microstructure and the characteristics of the coatings were investigated. Deposition efficiency and coating density were found both to be strongly improved by spraying helium as the process gas.

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Section: Deposition Of Coldmentioning

confidence: 99%

The Influence of the Substrate on the Deposition of Cold-Sprayed Titanium: An Experimental and Numerical Study

et al. 2010

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“…For instance, Olakanmi et al, (Ref 14) and Christoulis et al, (Ref 15,16,17) demonstrated LACS as a pretreatment method in which the laser beam passes milliseconds prior to the cold spray jet for deposition. Consequently, the laser beam softens the deposition site and thus the sprayed particles impinge on the softened substrate thereby forming a coating that is bonded to the substrate.…”

Section: Historical Developments Of Lacs and Process Descriptionmentioning

confidence: 99%

Laser-Assisted Cold-Sprayed Corrosion- and Wear-Resistant Coatings: A Review

Olakanmi

Doyoyo

2014

J Therm Spray Tech

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Laser-assisted cold spray (LACS) process will be increasingly employed for depositing coatings because of its unique advantages: solid-state deposition of dense, homogeneous, and pore-free coatings onto a range of substrates; and high build rate at reduced operating costs without the use of expensive heating and process inert gases. Depositing coatings with excellent performance indicators via LACS demands an accurate knowledge and control of processing and materialsÕ variables. By varying the LACS process parameters and their interactions, the functional properties of coatings can be manipulated. Moreover, thermal effect due to laser irradiation and microstructural evolution complicate the interpretation of LACS mechanical deformation mechanism which is essential for elucidating its physical phenomena. In order to provide a basis for follow-on-research that leads to the development of high-productivity LACS processing of coatings, this review focuses on the latest developments in depositing corrosion-and wearresistant coatings with the emphasis on the composition, structure, and mechanical and functional properties. Historical developments and fundamentals of LACS are addressed in an attempt to describe the physics behind the process. Typical technological applications of LACS coatings are also identified. The investigations of all process sequences, from laser irradiation of the powder-laden gas stream and the substrate, to the impingement of thermally softened particles on the deposition site, and subsequent further processes, are described. Existing gaps in the literature relating to LACS-dependent microstructural evolution, mechanical deformation mechanisms, correlation between functional properties and process parameters, processing challenges, and industrial applications have been identified in order to provide insights for further investigations and innovation in LACS deposition of wear-and corrosionresistant coatings.

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“…In another configuration (figure 8), a pulsed Nd-YAG laser was coupled with the cold-spray gun to result in the laser beam passing milliseconds prior to the cold-spray jet for deposition, (Christoulis et al, 2009;Christoulis et al 2010). Pulsed Nd-YAG laser were operated only during the first pass in order to clean the substrate surface.…”

Section: Laser-assisted Cold Spray (Lacs)mentioning

confidence: 99%