Effects of nano-ceramic particle addition for cold sprayed fluoropolymer coatings

W. Lock Sulen, K. Ravi, C. Bernard, N. Mary, Y. Ichikawa, K. Ogawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


Semi-crystalline polymers such as fluoropolymers are extremely difficult to coat with using solid-state deposition technique such as cold spray (CS) due to its high viscoelastic-viscoplastic behavior. Generally, fluoropolymers solid-state deposition using CS are characterized by a relatively low deposition efficiency (DE) as compared to metallic materials using this deposition technique. In this article, the study on the effect of hydrophobic fumed nano-silica (FNS) and fumed nano-alumina (FNA) in Perfluoroalkoxy (PFA) solid-state deposition using CS has been studied. This study incorporated certain parameters related to the CS process. In addition, powder modification technique using hydrophobic FNS and FNA as additive to feedstock has been studied as well. The results show a number of parameters affected the DE; particle size, traverse speed, gas temperature, and addition of hydrophobic fumed nano-particles, indicated a better DE. Moreover, PFA coating produced in this manner, retained its hydrophobicity.

Original languageEnglish
Title of host publicationSurface Modification Technologies
EditorsAntonello Astarita, Antonino Squillace, T.S. Sudarshan, Pierpaolo Carlone
PublisherTrans Tech Publications Ltd
Number of pages6
ISBN (Print)9783035715255
Publication statusPublished - 2019
Event33rd Surface Modification Technologies Conference, SMT 2019 - Naples, Italy
Duration: 2019 Jun 262019 Jun 28

Publication series

NameKey Engineering Materials
Volume813 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795


Conference33rd Surface Modification Technologies Conference, SMT 2019


  • Cold-spray
  • Fluoropolymer
  • Fumed nano-particle
  • Superhydrophobic coating

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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