Mo-C Multilayered CVD Coatings

Abstract

Production processes of multi-layered Mo-C coatings by the method of chemical vapor deposition (CVD) with the use of organometallic compounds were developed. Coatings are applied on technical purpose steel DIN 1.2379 (H12F1) and DIN 1.7709 (25H2MF (ÉI10) heat-treated ball with the high class of surface roughness (> 10). The average deposition rate was 50 μm / h. The optimal conditions of deposition coatings for different technological schemas were defined. Metallographic investigations of the obtained coatings were carried out. Tribological studies of the friction and wear characteristics of sliding friction in conditions of boundary lubrication of Ï-S multilayered CVD coatings shows, that coatings have low friction coefficients (0075-0095) at loads up to 2.0 kN, showed high resistance to wear and are effective in increasing the stability of the pair for precision friction pairs of hydraulical units.

Keywords

• CVD processes
• Multi‐layered coatings
• Tribology