The use of kinetic metallization to form intermetallic reinforced composite coatings by post-spray heat treatment

Spencer, K. and Zhang, M.X. (2009) The use of kinetic metallization to form intermetallic reinforced composite coatings by post-spray heat treatment. SURFACE & COATINGS TECHNOLOGY, 203 20-21: 3019-3025. doi:10.1016/j.surfcoat.2009.03.019


Author Spencer, K.
Zhang, M.X.
Title The use of kinetic metallization to form intermetallic reinforced composite coatings by post-spray heat treatment
Journal name SURFACE & COATINGS TECHNOLOGY   Check publisher's open access policy
ISSN 0257-8972
Publication date 2009-07-15
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.surfcoat.2009.03.019
Open Access Status
Volume 203
Issue 20-21
Start page 3019
End page 3025
Total pages 7
Editor Matthews, A.
Sartwell, B.D.
Place of publication Switzerland
Publisher Elsevier S.A.
Language eng
Subject C1
091207 Metals and Alloy Materials
861201 Coated Metal and Metal-Coated Products
Abstract Al + Ni coatings were deposited on AZ91 alloy substrates by cold spray in a fully dense state, with uniform dispersion of the two particle species. Post-spray heat treatment at 420 degrees C, which is compatible with the typical AZ91 heat treatment regime, leads to the formation of the NiAl3 and Ni2Al3 phases within the coatings. Therefore, metal matrix Ni-Al intermetallic reinforced composite coatings on AZ91 substrates can be readily obtained. Although the Kirkendall effect results in porosity, reducing heat treatment time or increasing the proportion of Al in the coating can significantly decrease pore size and fraction.
Keyword Intermetallics
COLD SPRAY DEPOSITION
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Mechanical & Mining Engineering Publications
 
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Created: Thu, 03 Sep 2009, 17:52:08 EST by Mr Andrew Martlew on behalf of School of Mechanical and Mining Engineering