Comparative study of surface roughness and tribological behavior during running-in period of hard coatings deposited by lateral rotating cathode arc
✍ Scribed by V. Podgursky; R. Nisumaa; E. Adoberg; A. Surzhenkov; A. Sivitski; P. Kulu
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 701 KB
- Volume
- 268
- Category
- Article
- ISSN
- 0043-1648
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✦ Synopsis
This study focuses on the influence of surface geometry of hard coatings on tribological behavior. TiN, TiAlN, AlTiN and nanocomposite (nc-Ti 1-x Al x N)/(a-Si 3 N 4 ) (nACo) coatings were deposited by means of the lateral rotating cathode arc method on high speed steel (HSS) substrates. Surface topology (area of 50 m × 50 m, 10 m × 10 m and 5 m × 5 m) investigations by the atomic force microscopy (AFM) revealed that for all types of coatings the non-Gaussian height distribution function (HDF) is mainly due to the macroparticles. Factors and mechanisms affecting the value of the coefficient of friction (COF) during the running-in period were discussed.