Understanding deposition mechanism in cold sprayed ultra high molecular weight polyethylene coatings on metals by isolated particle deposition method

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

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The cold spray has been shown to be one of the promising additive manufacturing technologies to process Ultra High Molecular Weight Polyethylene (UHMWPE)-metal integrated systems by successfully being able to coat UHMWPE on metals using fumed nano-alumina (FNA) as UHMWPE particle surface modifiers. However, the exact mechanism of UHMWPE deposition and role of FNA was widely unknown. This study aims at identifying the fundamental parameters involved in high strain-rate UHMWPE deposition and their role in successful adhesion by a technique called Isolated Particle Deposition (IPD). Major parameters that influenced the UHMWPE deposition efficiency significantly were the particle temperature and velocity and net surface activity of FNA. The stored elastic energy of UHMWPE decreases with increase in temperature, and the deposition criterion for a successful UHMWPE deposition is not to have net stored elastic energy after impact. Effect of FNA was seen in generating H-bonds that helped to establish bridge bond at UHMWPE-substrate interface.

Original languageEnglish
Pages (from-to)191-200
Number of pages10
JournalAdditive Manufacturing
Volume21
DOIs
Publication statusPublished - 2018 May

Keywords

  • Cold spray
  • Deposition mechanism
  • Nanoceramics
  • Polymer
  • UHMWPE

ASJC Scopus subject areas

  • Biomedical Engineering
  • Materials Science(all)
  • Engineering (miscellaneous)
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'Understanding deposition mechanism in cold sprayed ultra high molecular weight polyethylene coatings on metals by isolated particle deposition method'. Together they form a unique fingerprint.

Cite this