The microstructure, mechanical and microtribological properties of Al-CrBN coatings synthesized at various substrate bias voltage UB (from -50 to -150 V) and the nitrogen pressure pN2 (from 2 to 5 Pa) were studied. The relationship between the microstructure, adhesion force and dissipation of the coatings surface with microtribological properties (determined by nanoscratch testing) using atomic force microscopy has been established. The average value of dissipation over the surface of the coatings decreases with increasing pN2 and UB. The adhesion force of the particle-free area on coatings is significantly higher than on particles and ranges from 12 to 20 nN, and on particles from 1 to 6 nN. Microtribological properties decrease with increasing pN2 and UB. An increase in mechanical properties (determined using a nanoindenter) was established with increasing pN2 and UB. Using nanoindentation and nanoscratch testing methods, a near-surface layer with a thickness of about 40 nm was revealed, which significantly differs in properties from coatings. A correlation analysis was carried out between the micro- and macrotribological properties of coatings. The use of high-precision probe methods made it possible to characterize and study the influence of application parameters on the micro- and nano-properties of AlCrBN coatings.

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Microstructure and Micro- and Nano-Properties of Al-Cr-B-N Coatings

  • Vasilina A. Lapitskaya,
  • Tatyana A. Kuznetsova,
  • Bogdan Warcholinski,
  • Adam Gilewicz,
  • Anastasiya V. Khabarava,
  • Sergei A. Chizhik,
  • Andrey L. Nikolaev,
  • Sergei M. Aizikovich

摘要

The microstructure, mechanical and microtribological properties of Al-CrBN coatings synthesized at various substrate bias voltage UB (from -50 to -150 V) and the nitrogen pressure pN2 (from 2 to 5 Pa) were studied. The relationship between the microstructure, adhesion force and dissipation of the coatings surface with microtribological properties (determined by nanoscratch testing) using atomic force microscopy has been established. The average value of dissipation over the surface of the coatings decreases with increasing pN2 and UB. The adhesion force of the particle-free area on coatings is significantly higher than on particles and ranges from 12 to 20 nN, and on particles from 1 to 6 nN. Microtribological properties decrease with increasing pN2 and UB. An increase in mechanical properties (determined using a nanoindenter) was established with increasing pN2 and UB. Using nanoindentation and nanoscratch testing methods, a near-surface layer with a thickness of about 40 nm was revealed, which significantly differs in properties from coatings. A correlation analysis was carried out between the micro- and macrotribological properties of coatings. The use of high-precision probe methods made it possible to characterize and study the influence of application parameters on the micro- and nano-properties of AlCrBN coatings.