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Nano oxides reinforced high-entropy alloy coatings synthesized by atmospheric plasma spraying

  • Y. K. Mu*
  • , Y. D. Jia
  • , L. Xu
  • , Y. F. Jia
  • , X. H. Tan
  • , J. Yi
  • , G. Wang
  • , P. K. Liaw
  • *Corresponding author for this work
  • Shanghai University
  • University of Tennessee

Research output: Contribution to journalArticlepeer-review

Abstract

The high-entropy alloy coatings reinforced with nano oxides were synthesized by the atmospheric plasma spraying (APS). The crystal structure, microstructure, surface morphology, hardness and wear resistance properties of the CoCrFeNiAl and CoCrFeNiMo high-entropy alloy coatings are investigated. For CoCrFeNiAl high entropy coating (HEC) not only has high hardness (573 ± 19 Hv0.1) but also has good wear resistance [The coefficients of friction (COF) is 0.49 ± 0.04]. The transition of the wear mechanism obviously appears between the two HECs. The influences of the structure, composition and hardness on the tribological behavior of high-entropy alloy coatings were discussed in details.

Original languageEnglish
Pages (from-to)312-319
Number of pages8
JournalMaterials Research Letters
Volume7
Issue number8
DOIs
StatePublished - 3 Aug 2019
Externally publishedYes

Keywords

  • High-entropy alloy
  • atmospheric plasma spraying
  • coatings
  • nano oxides
  • tribological behavior

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