In situ tribometry of cold-sprayed Al-Al2O3 composite coatings

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DOIResolve DOI: http://doi.org/10.1016/j.surfcoat.2012.04.099
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TypeArticle
Journal titleSurface and Coatings Technology
ISSN0257-8972
Volume215
Pages350356; # of pages: 7
SubjectCold spray; Mechanically mixed layers; Metal matrix composite coatings; Situ tribologies; Third body; Aluminum coatings; Cladding (coating); Composite coatings; Friction; Interfaces (materials); Wear of materials; Aluminum
AbstractAn in situ tribometer utilizing a transparent hemispherical counterface was used to conduct sliding wear tests on Al-Al2O3 composite coatings deposited by cold spray. Direct observation of the wear interface via the slider allowed for correlation to be identified between the formation of transfer film and friction changes, wear rates, and the evolution of subsurface structures. It was revealed that the presence of hard particles in the Al-Al2O3 coating stabilized the transfer film, characterized by less plastic flow and fewer instances of hole formation at the interface. This increase in stability correlated with lower wear rates, stable friction, and the formation of a mechanically mixed layer (MML) in the worn subsurface. © 2012 Elsevier B.V.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21269913
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Record identifier779ca94d-3ecb-4829-8d10-17e56c54fd74
Record created2013-12-13
Record modified2016-05-09
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