Third body behavior during dry sliding of cold-sprayed Al-Al₂O₃ composites : in situ tribometry and microanalysis

Alternative titleThird body behavior during dry sliding of cold-sprayed Al-Al2O3 composites : in situ tribometry and microanalysis
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DOIResolve DOI: http://doi.org/10.1007/s11249-014-0326-z
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TypeArticle
Journal titleTribology Letters
ISSN1023-8883
1573-2711
Volume54
Issue2
Pages191206; # of pages: 16
SubjectCold spray; aluminum composite; third bodies; in situ tribometry; tribological circuit.
AbstractReciprocating sliding wear experiments were conducted on cold-sprayed pure aluminum and Al–22.6 wt% Al2O3 coatings using a custom-built in situ tribometer. Using a transparent sapphire counterface for the wear tests, the dynamic behavior of third body material in the contact was optically observed. The presence of Al2O3 particles led to greater stability of the transfer films adhering to the sapphire counterface, as well as greater stability of the friction coefficient and lower wear rates. Ex situ microanalysis of material in the wear tracks and transfer films suggests that the presence of Al2O3 particles promoted strain localization during sliding. This produced more uniform third body microstructures and protected the underlying aluminum matrix from deformation, which slowed the rate of transfer to the counterface.
Publication date
LanguageEnglish
AffiliationAutomotive and Surface Transportation; National Research Council Canada
Peer reviewedYes
NRC numberNRC-AST-145124
NPARC number21271991
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Record identifier52c576a4-a5a0-4c17-8a7c-60842df22ebf
Record created2014-05-16
Record modified2016-05-09
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