Development of Ultra-High Molecular Weight Polyethylene (UHMWPE) Coating by Cold Spray Technique

Kesavan Ravi, Yuji Ichikawa, Tiana Deplancke, Kazuhiro Ogawa, Olivier Lame, Jean Yves Cavaille

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Ultra-high molecular weight polyethylene or UHMWPE is an extremely difficult material to coat with, as it is rubbery and chemically very inert. The Cold Spray process appears to be a promising alternative processing technique but polymers are in general difficult to deposit using this method. So, attempts to develop UHMWPE coatings were made using a downstream injection cold spray technique incorporating a few modifications. A conventional cold spray machine yielded only a few deposited particles of UHMWPE on the substrate surface, but with some modifications in the nozzle geometry (especially the length and inner geometry) a thin coating of 45 μm on Al substrate was obtained. Moreover, experiments with the addition of fumed nano-alumina to the feedstock yielded a coating of 1-4 mm thickness on Al and polypropylene substrates. UHMWPE was seen to be melt crystallized during the coating formation, as can be seen from the differential calorimetry curves. Influence of nano-ceramic particles was explained by observing the creation of a bridge bond between UHMWPE particles.

Original languageEnglish
Pages (from-to)1015-1025
Number of pages11
JournalJournal of Thermal Spray Technology
Volume24
Issue number6
DOIs
Publication statusPublished - 2015 Aug 6

Keywords

  • coating
  • cold spray
  • nano-ceramic particle
  • ultra-high molecular weight polyethylene (UHMWPE)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry

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