Investigation of Al-Al₂O₃ cold spray coatings formation and properties

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DOIResolve DOI: http://doi.org/10.1007/s11666-007-9086-8
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TypeArticle
Journal titleJournal of Thermal Spray Technology
Volume16
Issue5-6
Pages661668; # of pages: 8
AbstractCoating build-up mechanisms and properties of cold sprayed aluminum-alumina cermets were investigated. Two spherical aluminum powders having average diameters of 36 and 81 microns were compared. Those powders were blended with alumina at several concentrations. Coatings were produced using a commercial low pressure cold spray system. Powders and coatings were characterized by electronic microscopy and microhardness measurements. In-flight particle velocities were monitored for all powders. The deposition efficiency was measured for all experimental conditions. Coating performance and properties were investigated by performing bond strength test, abrasion test and corrosion tests, namely, salt spray and alternated immersion in salt water tests. These coating properties were correlated to the alumina fraction either in the starting powder or in the coating.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number48964
NPARC number15782950
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Record identifier89922810-5954-4b5e-9e12-f6b4f1fc536f
Record created2010-07-07
Record modified2016-05-09
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