Impacting behavior of large oxidized copper particles in cold spraying

Wenya Li, Min Yu, Xueping Guo, Hanlin Liao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the previous study (Ref 1), it has been experimentally demonstrated that surface oxide films of metallic particles have significant influence on the deposition efficiency, microstructure and properties of cold sprayed coatings. To clearly reveal the underlying mechanism, this study focuses further on the effect of particle oxidation on its deposition behavior with the designedly oxidized Cu particles having an average size of about 81μm. The oxidized Cu powder was deposited by cold spraying with respect to the single impacts and coating deposition. In addition, the rebounded copper particles were collected for morphology analysis compared to the adhered particles. Results show that the deposition efficiency of the oxidized Cu particles is much lower than that of the annealed Cu powder. The thick oxide film extremely prohibits the bonding of particles. In addition, the clearance of interface oxide inclusions by plastic deformation of particles was also observed.

Original languageEnglish
Title of host publicationInternational Thermal Spray Conference and Exposition, ITSC 2012 - Air, Land, Water and the Human Body
Subtitle of host publicationThermal Spray Science and Applications
PublisherASM International
Pages277-282
Number of pages6
ISBN (Print)9781632666796
StatePublished - 2012
EventInternational Thermal Spray Conference and Exposition - Air, Land, Water and the Human Body: Thermal Spray Science and Applications, ITSC 2012 - Houston, TX, United States
Duration: 21 May 201224 May 2012

Publication series

NameProceedings of the International Thermal Spray Conference

Conference

ConferenceInternational Thermal Spray Conference and Exposition - Air, Land, Water and the Human Body: Thermal Spray Science and Applications, ITSC 2012
Country/TerritoryUnited States
CityHouston, TX
Period21/05/1224/05/12

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