A functionally graded multilayer approach to the synthesis of boron containing ceramic thin films

T. Tavsanoglu*, M. Jeandin, O. Addemir, O. Yucel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Despite their excellent properties, adhesion problems are common for B 4C and BCN thin films on different substrates when the film thickness exceeds about 500 nm. Three functionally graded multilayer designs; surface boronizing of the steel substrate before deposition (Boride underlayer/B 4C), Ti/TiC/B4C and Ti/TiN/BCN structures were discussed in this study, to alleviate the adhesion problems. Cross-sectional FE-SEM examinations and elemental depth profiling by SIMS revealed the graded structure of the films. The elemental film composition measured by EPMA and the mechanical properties determined by nanoindentation demonstrated the graded chemical composition and the transition of the hardness and Young's modulus values between different layers respectively. The results demonstrated the possibility of growing well adherent boron containing ceramic coatings with thicknesses in the μm range by means of different graded underlayer designs.

Original languageEnglish
Pages (from-to)1717-1721
Number of pages5
JournalSolid State Sciences
Volume14
Issue number11-12
DOIs
Publication statusPublished - 2012

Keywords

  • BCN thin films
  • Boron carbide thin films
  • FGM
  • Multilayer
  • Nanoindentation
  • SIMS

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