Cold spray of Al-MMC coatings on magnesium alloys for improved corrosion and wear resistance

Spencer, Kevin, Fabijanic, Daniel and Zhang, Ming Xing (2009). Cold spray of Al-MMC coatings on magnesium alloys for improved corrosion and wear resistance. In: M.S. Dargusch and S. Keay, Light Metals Technology 2009. 4th International Light Metals Technology Conference (LMT 2009), Gold Coast, Austraila, (377-380). 29 June - 1 July 2009. doi:10.4028/

Author Spencer, Kevin
Fabijanic, Daniel
Zhang, Ming Xing
Title of paper Cold spray of Al-MMC coatings on magnesium alloys for improved corrosion and wear resistance
Conference name 4th International Light Metals Technology Conference (LMT 2009)
Conference location Gold Coast, Austraila
Conference dates 29 June - 1 July 2009
Proceedings title Light Metals Technology 2009   Check publisher's open access policy
Journal name Materials Science Forum   Check publisher's open access policy
Place of Publication Zurich, Switzerland
Publisher TransTech Publications
Publication Year 2009
Sub-type Fully published paper
DOI 10.4028/
Open Access Status
ISBN 0878493271
ISSN 0255-5476
Editor M.S. Dargusch
S. Keay
Volume 618-619
Start page 377
End page 380
Total pages 4
Collection year 2010
Language eng
Abstract/Summary Cold spray coatings are considered promising for surface protection of Mg alloys from wear and corrosion since the process temperature is low enough to avoid oxidation of the Mg or any adverse affects on artificial ageing heat treatments. A special version of cold spray known as Kinetic Metallization has been used to produce pure Al and Al alloy metal matrix composite (MMC) coatings on AZ91 Mg alloy substrates in the present work. This surface treatment produces dense coatings with high adhesive and cohesive strength, which have substantially higher hardness and wear resistance than the AZ91 substrate material. The influence of coating composition and subsequent heat treatment on wear and corrosion performance have been investigated, using pin-on-disc wear tests, salt spray testing and electrochemical polarisation techniques. The heat treatment of the cold spray coatings is compatible with the solutionising and T6 ageing heat treatment of AZ91Mg. The results show that cold spray deposition of MMC coatings is a simple and effective technique for improving the surface properties of Mg alloys, both in the as-cast and in the heat treated condition.
Subjects 091207 Metals and Alloy Materials
861201 Coated Metal and Metal-Coated Products
Keyword Cold spray coating
Mg alloys
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Thu, 11 Mar 2010, 11:25:14 EST by Sally Beard on behalf of School of Mechanical and Mining Engineering