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

[Display omitted] 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 in...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials processing technology 2019-11, Vol.273, p.116254, Article 116254
Main Authors: Ravi, Kesavan, Deplancke, Tiana, Lame, Olivier, Ogawa, Kazuhiro, Cavaillé, Jean-Yves, Dalmas, Florent
Format: Article
Language:English
Subjects:
Additive manufacturing
Coating
Cold-spray
Compressive strength
Consolidation
Engineering Sciences
Interfacial strength
Interlayers
Materials
Mechanical properties
Mechanics
Mechanics of materials
Nano-composites
Polymer
Polymer matrix composites
Polymers
Sintering
Ultra high molecular weight polyethylene
Wetting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] 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.
ISSN:0924-0136
1873-4774
DOI:10.1016/j.jmatprotec.2019.116254