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PRODID:https://murmitoyen.com/events/vanille/udem/
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UID:69df0ad56fae0
DTSTAMP:20260414T234941
DTSTART:20150119T113000
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20150119T123000
URL:https://murmitoyen.com/events/vanille/udem/detail/557015-cold-sprayed-c
 oatings-for-tribology-applications-n-friction-wear-and-third-bodies
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Cold sprayed coatings for tribology applications – friction\, wea
 r and third bodies – R. Chromik\, McGill
DESCRIPTION:Richard Chromik\, McGill University\, Department of Mining and 
 Materials Engineering\, Montreal\, QC\, CanadaMetal-matrix composites have
  a long history for use in tribological applications. Hard phase reinforce
 ments can enhance wear resistance and solid lubricant additions can reduce
  friction. More recently\, with maturity of the process\, cold spray has b
 ecome a technology capable of manufacturing metal-matrix composite coating
 s. In this presentation\, research on two coating systems will be describe
 d: Al-Al2O3 and Cu-MoS2. In both cases\, the addition of the secondary pha
 se provided an enhancement to the tribological performance compared to the
  pure metal. Mechanistically\, these improvements were explained by examin
 ation of the flow of “third bodies” – materials generated through th
 e wear process that contribute significantly to the behavior of the tribos
 ystem. In our group\, we use an in situ tribometer to directly observe thi
 rd body formation and flow during tribological testing. Post-analysis of t
 he worn coatings by electron channeling contrast imaging and nanoindentati
 on helped to reveal connections between structural changes and modificatio
 ns to the mechanical properties induced by wear.Relationships between the 
 process conditions\, structure of the coatings and tribological properties
  will be discussed. For Al-Al2O3 coatings the role of the volume fraction 
 and morphology of Al2O3 was examined. For the Cu-MoS2 coatings\, connectio
 ns were made from the different steps taken to improve coating deposition 
 to the coating structure and ultimately the tribological performance of th
 e coatings. Voici le lien vers la page web du groupe de recherche du Pr 
 ChromikCette conférence est présentée par le RQMP Versant Nord du Dép
 artement de physique de l'Université de Montréal et le Département de g
 énie physique de Polytechnique Montréal. 
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