Mechanical and Tribological Properties of NbTiAlx, NbTiAl0.5Ny, and NbTiAl0.5N14-CHz Coatings with Various Aluminum Target Currents and Nitrogen and Acetylene Flow Rates

Y. L. Su, W. H. Kao, B. Y. Chen

Research output: Contribution to journalArticlepeer-review

Abstract

NbTiAlX, NbTiAl0.5Ny, and NbTiAl0.5N14-CHz coatings were deposited on SKH51 substrates using a radio frequency unbalanced magnetron sputtering system. The NbTiAl0.5Ny coatings prepared with higher nitrogen fluxes (14 sccm) exhibited a denser cross-sectional structure, a higher hardness, a better adhesion, and a lower wear rate than the NbTiAlx coatings. The friction coefficients of the NbTiAl0.5N14-CHz coatings were lower than those of the NbTiAl0.5Ny coatings. Furthermore, the NbTiAl0.5N14-CH12 coating (acetylene flux 12 sccm) had a DLC structure with enhanced adhesion properties and formed a carbon-rich transfer layer on the counterbody surface during sliding. The NbTiAl0.5N14-CH12 coating thus exhibited the best tribological properties among all the coatings.

Original languageEnglish
Pages (from-to)7928-7945
Number of pages18
JournalJournal of Materials Engineering and Performance
Volume32
Issue number17
DOIs
Publication statusPublished - 2023 Sept

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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