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Effect of substrate roughness on splatting behavior of HVOF sprayed polymer particles: Modeling and experiments
Journal article   Peer reviewed

Effect of substrate roughness on splatting behavior of HVOF sprayed polymer particles: Modeling and experiments

M Ivosevic, V Gupta, R Knight, R Cairncross, J Baldoni and T Twardowski
Journal of thermal spray technology, v 15(4), pp 725-730
Dec 2006

Abstract

HVOF spraying of polymers Operating Procedures, Materials Treatment Chemistry Materials Science Analytical Chemistry Tribology, Corrosion and Coatings Characterization and Evaluation of Materials Surfaces and Interfaces, Thin Films polymer splats surface roughness
A three-dimensional model of particle splatting on rough surfaces has been developed for high-velocity oxyfuel (HVOF) sprayed polymer particles and related to experimentally observed polymer splats. Fluid flow and particle deformation were predicted using a volume of fluid (VoF) method using Flow-3D software. Splatting behavior and final splat shapes were simulated on a realistic rough surface, generated by optical interferometry of an actual grit-blasted steel surface. Predicted splat shapes were compared with scanning electron microscopy images of nylon 11 splats deposited onto grit-blasted steel substrates. Rough substrates led to the formation of fingers and other asymmetric three-dimensional instabilities that are seldom observed in simulations of polymer splatting on smooth substrates.

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Collaboration types
Domestic collaboration
Web of Science research areas
Materials Science, Coatings & Films
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