Title

Cold Sprayed Aluminum Based Glassy Coating: Synthesis, Wear And Corrosion Properties

Keywords

Aluminum based metallic glass; Coating; Cold spraying; Corrosion resistance; Wear resistance

Abstract

Al-based glassy coatings were synthesized using cold spraying technique to protect 6061 aluminum surface from wear and corrosion. Gas atomized Al90.05Y4.4Ni4.3Co0.9Sc0.35 (at.%) powder was used as the starting powder. Dense (98%) coatings with a uniform thickness of ~250μm were deposited. The coatings retained the glassy structure of the powder with few nanocrystals embedded in the amorphous matrix. Ball-on-disk wear of the coatings showed 600% improvement in the wear resistance as compared to 6061Al substrate. Potentiodynamic studies of the coatings in varying NaCl concentrations displayed 5 times better corrosion resistance than 6061 Al substrate, which was attributed to the active passivation and the chemical homogeneity of the coatings.© 2013 Elsevier B.V.

Publication Date

10-15-2013

Publication Title

Surface and Coatings Technology

Volume

232

Number of Pages

33-40

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.surfcoat.2013.04.049

Socpus ID

84883460249 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84883460249

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