Mechanical characterization of composite coatings formed by reactive detonation spraying of titanium

Sergey Panin, Ilya Vlasov, Dina Dudina, Vladimir Ulianitsky, Roman Stankevich, Igor Batraev, Filippo Berto

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The structure and mechanical properties of the coatings formed by reactive detonation spraying of titanium in a wide range of spraying conditions were studied. The variable deposition parameters were the nature of the carrier gas, the spraying distance, the O2/C2H2 ratio, and the volume of the explosive mixture. The phase composition of the coatings and the influence of the spraying parameters on the mechanical properties of the coatings were investigated. In addition, nanohardness of the individual phases contained in the coatings was evaluated. It was found that the composition of the strengthening phases in the coatings depends on the O2/C2H2 ratio and the nature of the carrier gas. Detonation spraying conditions ensuring the formation of composite coatings with a set of improved mechanical properties are discussed. The strength of the coatings was determined through the microhardness measurements and local characterization of the phases via nanoindentation. Three-point bending tests were employed in order to evaluate the crack resistance of the coatings. The strengthening mechanisms of the coatings by oxide or carbonitride phases were discussed.

Original languageEnglish
Article number355
JournalMetals
Volume7
Issue number9
DOIs
Publication statusPublished - 8 Sep 2017

Keywords

  • Composites
  • Detonation spraying
  • Electron microscopy
  • Micromechanics
  • Phase transformation
  • Powder methods
  • Three-point bending
  • Titanium alloys

ASJC Scopus subject areas

  • Materials Science(all)

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  • Cite this

    Panin, S., Vlasov, I., Dudina, D., Ulianitsky, V., Stankevich, R., Batraev, I., & Berto, F. (2017). Mechanical characterization of composite coatings formed by reactive detonation spraying of titanium. Metals, 7(9), [355]. https://doi.org/10.3390/met7090355