Microstructural changes of amorphous Mo–B–C coatings upon thermal annealing

L. Zábranský, P. Souček, P. Vašina, J. Dugáček, P. Sťahel, J. Buršík, M. Svoboda, R. Mikšová, V. Peřina, K. Balázsi, Z. Czigány, V. Buršíková

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1 Citation (Scopus)

Abstract

Several amorphous Mo–B–C coatings with wide range of compositions were subjected to thermal annealing to a final temperature of 1000 °C in UHV conditions. The nature of the induced recrystallization depended mostly on the Mo content in the coating. A higher Mo content resulted in a nanocrystalline Mo2C phase, a lower Mo content in a nanocrystalline Mo2BC phase and Mo content in-between resulted only in a near-amorphous microstructure. In all cases, the hardness and effective elastic modulus increased significantly after annealing up to values of ∼29 GPa and 500 GPa, respectively. The cobalt diffusion from the WC-Co substrates affected the lower parts of coatings forming a MoCoB interface.

Original languageEnglish
Article number125052
JournalSurface and Coatings Technology
Volume379
DOIs
Publication statusPublished - Dec 15 2019

Keywords

  • Magnetron sputtering
  • MoBC
  • MoC
  • Mo–B–C coatings
  • Thermal stability

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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    Zábranský, L., Souček, P., Vašina, P., Dugáček, J., Sťahel, P., Buršík, J., Svoboda, M., Mikšová, R., Peřina, V., Balázsi, K., Czigány, Z., & Buršíková, V. (2019). Microstructural changes of amorphous Mo–B–C coatings upon thermal annealing. Surface and Coatings Technology, 379, [125052]. https://doi.org/10.1016/j.surfcoat.2019.125052