Laser Shock Flier Impact Simulation of Particle-Substrate Interactions in Cold Spray |
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Authors: | S Barradas V Guipont R Molins M Jeandin M Arrigoni M Boustie C Bolis L Berthe M Ducos |
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Affiliation: | (1) Centre des Matériaux/CNRS 7633, C2P-Competence Center for spray Processing, Mines Paris – ParisTech, Evry Cedex, France;(2) Centre des Matériaux/CNRS 7633, Mines Paris – ParisTech, Evry Cedex, France;(3) LCD – Laboratoire de Combustion et de Détonique, CNRS UPR 9028, ENSMA, Futuroscope Chasseneuil Cedex, France;(4) LALP – Laboratoire pour l’Application des Lasers de Puissance, UPR CNRS 1578, Arcueil Cedex, France;(5) Route d’Uchaux, Mornas, France |
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Abstract: | Coating-substrate adhesion in cold spray is a paramount property, the mechanisms of which are not yet well elucidated. To
go into these mechanisms, due to the intrinsic characteristics of the cold spray process (particle low-temperature and high
velocity) direct observation and control of inflight particles and related phenomena cannot be done easily. For this reason,
an experimental simulation of the particle-substrate reactions at the particle impingement was developed. This simulation
is based on original flier impact experiments from laser shock acceleration. Relevant interaction phenomena were featured
and studied as a function of shearing, plastic deformation, phase transformation primarily. These phenomena were shown to
be similar to those involved in cold spray. This was ascertained by the study of the Cu-Al metallurgically reactive system
using SEM, TEM, EPMA, and energy balance and diffusion calculations. This simulation could also be used to feed finite element
modeling of cold spray and laser shock flier impact. |
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Keywords: | adhesion of TS coatings coatings for gas turbine components cold gas dynamic spraying friction and wear hydroxyapatite biomaterial laser deposited materials laser surface treatment plasma spray forming porosity of coatings spray deposition |
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