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Open AccessArticle

Swirling Effects in Atmospheric Plasma Spraying Process: Experiments and Simulation

1
Centro de Investigación y de Estudios Avanzados del I.P.N. Unidad Queretaro, Queretaro 76230, Mexico
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Materials Science and Engineering Program, Universidad Autónoma de Zacatecas, Zacatecas 98000, Mexico
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CONACYT—Universidad Autónoma de Zacatecas, Zacatecas 98000, Mexico
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Department of Mechanical Engineering, University of Massachusetts Lowell, Lowell, MA 01854, USA
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CIATEQ—Centro de Tecnología Avanzada, Queretaro 76150, Mexico
*
Authors to whom correspondence should be addressed.
Coatings 2020, 10(4), 388; https://doi.org/10.3390/coatings10040388
Received: 8 March 2020 / Revised: 28 March 2020 / Accepted: 29 March 2020 / Published: 15 April 2020
(This article belongs to the Section Plasma Coatings, Surfaces & Interfaces)
Experimental evidence of swirling effects in 3D trajectories of in-flight particles is presented based on static and dynamic footprints analysis as a function of stand-off distance of Al2O3 deposited employing a Metco-9MB torch. Swirling effects were validated with a proprietary computational fluid dynamics (CFD) code that considers an argon-hydrogen plasma stream, in-flight particles trajectories, both creating the spray cone, and particle impact to form a footprint on a fixed substrate located at different distances up to 120 mm. Static and dynamic footprints showed that swirl produces a slight deviation of individual particle trajectories and thus footprint rotation, which may affect coating characteristics. View Full-Text
Keywords: atmospheric plasma spraying; deposit footprint; swirl effect; mathematical modeling; plasma torch atmospheric plasma spraying; deposit footprint; swirl effect; mathematical modeling; plasma torch
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MDPI and ACS Style

Martínez-Villegas, I.; Mora-García, A.G.; Ruiz-Luna, H.; McKelliget, J.; Poblano-Salas, C.A.; Muñoz-Saldaña, J.; Trápaga-Martínez, G. Swirling Effects in Atmospheric Plasma Spraying Process: Experiments and Simulation. Coatings 2020, 10, 388.

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