Metallic transfer films studied in situ and ex situ: The case of cold-sprayed Al-Al2O3

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TypeArticle
Journal titleTribology and Lubrication Technology
ISSN1545-858X
Volume69
Issue9
Pages2831; # of pages: 4
SubjectCold-sprayed; Ex situ analysis; Metallic transfers; Nano-structured; Nanocrystalline aluminum; Transfer film; Tribological performance; Wear tracks; Composite coatings; Mechanical properties; Aluminum
AbstractThe presence of A12O3 particles in the composite coating promoted the formation of nanostructured aluminum in the transfer film, which contributed to its stability, as observed by in situ tribometry. This was linked to lower wear rates and more stable friction compared to the unreinforced cold sprayed aluminum. Here, the combination of in situ tribometry and ex situ analysis was a useful approach to reveal mechanisms specifically related to the transfer film, which were responsible for improved tribological performance. Other questions remain, which will be subject of future work, regarding the microstructural evolution in the wear track, mechanical properties of the third bodies, and the role of A1203 particles in the dynamic formation of nanocrystalline aluminum.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21270715
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Record identifierdd6f9794-fa86-4a25-ba69-e9c0b601672e
Record created2014-02-17
Record modified2016-05-09
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