Cold sprayed aluminum based glassy coating: Synthesis, wear and corrosion properties
Abbreviated Journal Title
Clin. Pharmacol. Ther.
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
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.
Surface & Coatings Technology
Surf. Coat. Technol.
"Cold sprayed aluminum based glassy coating: Synthesis, wear and corrosion properties" (2013). Faculty Bibliography 2010s. 4256.