Gas dynamic spray (GDS) coatings for improving galvanic corrosion and sliding wear resistance of magnesium alloys

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Proceedings titleMagnesium Technology 2008
ConferenceTMS 2008 Annual Meeting and Exhibition, March 9th to 13th 2008, New Orleans Louisiana
Pages373377; # of pages: 5
Subjectgas dynamic spray; galvanic corrosion resistance; magnesium alloys; dry sliding wear; wear resistance
AbstractMagnesium alloys are very attractive for many industrial applications, particularly for reducing vehicle weight in the automobile and aerospace industry. However, the poor wear and galvanic corrosion resistance seriously limits their wider engineering applications. In this paper, the improvement of galvanic corrosion and dry-sliding wear resistance of magnesium alloys has been investigated by applying aluminum-based coatings on cast AZ91D and AM60B magnesium alloy substrates using gas dynamic spray (GDS). It is shown that GDS coatings can be directly applied on dry-machined or cast magnesium alloy substrate with very good bonding without requiring special surface preparations. Salt spray testing showed excellent galvanic corrosion protection results for die-cast AM60B magnesium alloy by applying the developed innovative GDS coating. Dry sliding wear resistance of the cast magnesium alloys is also significantly improved by the aluminum-based GDS coatings.
Publication date
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21274327
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Record identifier414adfba-ba6a-4325-bfc3-e4717b24dfb2
Record created2015-03-10
Record modified2016-05-09
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