Machining of hybrid structures produced through cold spray technology: A preliminary study

Machining of hybrid structures produced through cold spray technology: A preliminary study

PERNA Alessia Serena, VISCUSI Antonio, ASTARITA Antonello, BOCCARUSSO Luca, CARRINO Luigi, DURANTE Massimo

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Abstract. Cold spray is a recently developed manufacturing technology for creating metallic layers on a variety of materials. Metallic particles are accelerated and strike the target surface using a pressurized gas flowing at supersonic speeds. In the last years, cold spray has gained increasing interest in different industrial scenarios, in particular, in the aerospace sector. Given the many fields of application, the need to understand how coated substrates behave when it is necessary to carry out machining operations arises. In this work, low-pressure cold spray equipment was employed to produce metal coatings on epoxy-based glass fibre-reinforced substrates optimized for cold spray deposition employing a layer of polypropylene on the composite surface. An automatic multi-purpose machine was used to drill 4mm diameter holes in the coated specimens considering the rotational speed fixed and varying the feed rate. The machined areas were then analyzed to assess the surface quality of the drilled holes and the burr morphology, considering different feed rate values and different entry surface of the drill-bit.

Machining, Cold Spray, Composites, Metal Coatings, Thermal Spray

Published online 4/19/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: PERNA Alessia Serena, VISCUSI Antonio, ASTARITA Antonello, BOCCARUSSO Luca, CARRINO Luigi, DURANTE Massimo, Machining of hybrid structures produced through cold spray technology: A preliminary study, Materials Research Proceedings, Vol. 28, pp 1729-1738, 2023


The article was published as article 187 of the book Material Forming

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