Embedment of copper particles into polymers by cold spray

King, Peter C., Poole, Andrew J. , Horne, Susan, de Nys, Rocky, Gulizia, Stefan, and Jahedi, Mahnaz Z. (2013) Embedment of copper particles into polymers by cold spray. Surface and Coatings Technology, 216. pp. 60-67.

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Abstract

Cold spray was used to embed copper particles into 6 different polymers – polyurethane, high density polyethylene, polypropylene, nylon 6, polytetrafluoroethylene and polycarbonate – without coating buildup. During impact, penetration of the particles and polymer flow around them resulted in their capture by the surface. The effects of spray temperature and traverse speed on particle penetration, sample weight gain and polymer deformation were investigated. Average embedment depths were determined from cross-sections, and over 50 μm was measured in high density polyethylene and polyurethane. Tribological properties (roughness and self-friction coefficients) and electrical sheet resistance of the Cu-embedded surfaces were studied. The embedding technique may find utility in functionalizing polymer surfaces that do not withstand high temperature coating methods, which provide poor adhesion for paint films, or where flexibility of the polymer needs to be maintained.

Item ID: 30884
Item Type: Article (Research - C1)
ISSN: 0257-8972
Keywords: cold spray, polymers, impact, deformation
Funders: CSIRO's Wealth from Oceans Flagship
Date Deposited: 22 Jan 2014 23:29
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091207 Metals and Alloy Materials @ 100%
SEO Codes: 86 MANUFACTURING > 8698 Environmentally Sustainable Manufacturing > 869899 Environmentally Sustainable Manufacturing not elsewhere classified @ 100%
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