Cold sprayed aluminum based glassy coating: Synthesis, wear and corrosion properties

    Authors

    D. Lahiri; P. K. Gill; S. Scudino; C. Zhang; V. Singh; J. Karthikeyan; N. Munroe; S. Seal;A. Agarwal

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Clin. Pharmacol. Ther.

    Keywords

    Cold spraying; Aluminum based metallic glass; Coating; Wear resistance; Corrosion resistance; BULK METALLIC-GLASS; AMORPHOUS PHASE-FORMATION; GAS-ATOMIZED POWDERS; FORMING ABILITY; NACL SOLUTION; ALLOYS; CRYSTALLIZATION; RESISTANCE; BEHAVIOR; NANOCRYSTALLINE; Materials Science, Coatings & Films; Physics, Applied

    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 similar to 250 mu m 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. (C) 2013 Elsevier B.V. All rights reserved.

    Journal Title

    Surface & Coatings Technology

    Volume

    Surf. Coat. Technol.

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    33

    Last Page

    40

    WOS Identifier

    232

    ISSN

    0257-8972

    Share

    COinS