Abstract
A study of the structural and mechanical properties of nanocrystalline TiAlSiN gradient coatings deposited by cathodic arc deposition techniques at 500 degrees C and post-annealed at 525 degrees C is presented. Analysis of the coatings, chemical composition and microstructure revealed that the coatings have a structure based on (Ti, Al)N nanocrystals with an average size of 10 nm embedded in an amorphous Si3N4 phase. The study of the mechanical properties showed that post-annealing causes improvement and increase of the coatings hardness. A maximum hardness of 48 GPa and elastic modulus of 560 GPa were measured. Also, excellent adhesion to the WC-Co substrate was observed in the post-annealed coatings.
Original language | English |
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Pages (from-to) | 15-24 |
Number of pages | 10 |
Journal | Journal of Nano Research |
Volume | 27 |
DOIs | |
Publication status | Published - 2014 |
Keywords
- Cathodic arc deposition
- Nanocrystalline coatings
- Nanoindentation
- Adhesion
- Transmission electron microscopy
- X-ray photoelectron spectroscopy
- (TI,SI,AL)N NANOCOMPOSITE COATINGS
- SI-N COATINGS
- THIN-FILMS
- THERMAL-STABILITY
- ELASTIC-MODULUS
- MICROSTRUCTURE
- HARDNESS
- INDENTATION
- DEPOSITION
- ORIGIN