Investigation of Cu coatings deposited by kinetic metallization

Han, Y. K., Birbilis, N., Spencer, K., Zhang, M.-X. and Muddle, B. C. (2010) Investigation of Cu coatings deposited by kinetic metallization. Materials Characterization, 61 11: 1167-1186. doi:10.1016/j.matchar.2010.07.011

Author Han, Y. K.
Birbilis, N.
Spencer, K.
Zhang, M.-X.
Muddle, B. C.
Title Investigation of Cu coatings deposited by kinetic metallization
Journal name Materials Characterization   Check publisher's open access policy
ISSN 1044-5803
Publication date 2010-11
Sub-type Article (original research)
DOI 10.1016/j.matchar.2010.07.011
Volume 61
Issue 11
Start page 1167
End page 1186
Total pages 20
Place of publication Philadelphia, P.A., U.S.A.
Publisher Elsevier
Collection year 2011
Language eng
Abstract Interfacial characterisation of Kinetic Metallization (KM) sprayed Cu coatings applied on metal substrates was performed using optical and electron microscopy, as well as microindentation hardness testing and microchemical analysis. The interfacial characterisation of KM coatings remains scarce to date. Cross sectional observations of KM coatings on light metal substrates revealed an undulating, patelliform profile with thin-lipped cusps at the interface. Pure Al and Mg substrates exhibited a mechanically impinged zone <~5 μm on the substrate material, approximately the size of deformed Cu powder particles. Examination of the Cu side of the interface indicated there was no long range interaction in the coating. On the substrate side of the interface, the KM process induced phase transformations (i.e. recrystallisation and an alloyed zone) in thin layers contiguous to the interface on pure Al and Mg substrates. Zones of elemental interdiffusion were identified at the interface upon Al and Mg substrates using scanning TEM. The width of intermixing zones was in the vicinity of < 1 μm. This metallurgical interaction at the interface occurred on the length scales involving the initial single layer of Cu particles bonded on the substrate. © 2010 Elsevier Inc.
Keyword Kinetic metallization
Cold spray
Interfacial bonding
Light metals
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
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Created: Tue, 16 Nov 2010, 18:06:06 EST by Associate Professor Mingxing Zhang on behalf of School of Mechanical and Mining Engineering