M3Influence of nanoceramic interlayer on polymer consolidation during cold-spray coating formation

Kesavan Ravi, Tiana Deplancke, Olivier Lame, Kazuhiro Ogawa, Jean Yves Cavaillé, Florent Dalmas

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Nanoceramic interlayers at the polymer-polymer interfaces have been demonstrated to be extremely vital for the coating buildup (up to 4 mm thickness) during cold-spray consolidation of Ultra-High Molecular Weight Polyethylene (UHMWPE). This paper investigates the polymer-polymer interface formation and strength as a function of the compressive state of the consolidation and the influence of the interlayers at the bonding interface. The research study suggested that the polymer-polymer interfaces get reinforced at high compressive consolidation by two in-situ mechanisms: (i) formation of core-shell surface composites; (ii) formation of a network of polymer-nanoceramic-polymer knots during the polymer chain inter-diffusion. On the other hand, a low compressive consolidation fails to create the surface compositing and polymer-nanoceramic-polymer links at the polymer-polymer interface yielding a weaker interface strength compared to that of a polymer-polymer interface. The nanoceramic particles in the interlayer, in this case, acted as a defect preventing efficient wetting and subsequent inter-diffusion between adjacent polymer particles.

Original languageEnglish
Article number116254
JournalJournal of Materials Processing Technology
Volume273
DOIs
Publication statusPublished - 2019 Nov

Keywords

  • Additive manufacturing
  • Coating
  • Cold-spray
  • Mechanical properties
  • Nano-composites
  • Polymer
  • Sintering

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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