Manufacturing of a Metal Matrix Composite Coating on a Polymer Matrix Composite Through Cold Gas Dynamic Spray Technique

In this work, the manufacturing through cold gas dynamic spray (cold spray or CS) of metallic composite coatings of Al-Al 2 O 3 on organic composite substrates with thermoplastic PLA matrix and hemp fibers was studied. Alumina powders, with a mean diameter of 50 μm, were used blended with aluminum p...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2019-06, Vol.28 (6), p.3211-3219
Main Authors: Perna, Alessia Serena, Viscusi, Antonio, Astarita, Antonello, Boccarusso, Luca, Carrino, Luigi, Durante, Massimo, Sansone, Raffaele
Format: Article
Language:English
Subjects:
ALUMINIUM OXIDES
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
MANUFACTURING
MATERIALS SCIENCE
MATRICES
POWDERS
Quality Control
Reliability
Safety and Risk
SPRAYS
SURFACE COATING
SURFACE PROPERTIES
THERMOPLASTICS
Tribology
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Summary:In this work, the manufacturing through cold gas dynamic spray (cold spray or CS) of metallic composite coatings of Al-Al 2 O 3 on organic composite substrates with thermoplastic PLA matrix and hemp fibers was studied. Alumina powders, with a mean diameter of 50 μm, were used blended with aluminum powders in three different weight concentration percentages (0, 15, 20, and 45%) as feedstock material in order to highlight and discuss the variations of the coating surface properties depending on the alumina percentage. The coatings were produced by using a low-pressure cold spray equipment. A detailed experimental campaign, including microstructural observations and confocal microscopy, was carried out to study the structure of the coatings. Moreover, the tribological behavior of the coatings was studied through both scratch test and pin-on-disk test. The experiments showed that a small addition of alumina improves the compactness of the coating and its resistance to scratch and wear behavior.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-019-03914-6