Wear-Resistant TiCN-Based Ceramic Materials for High-Load Friction Units

The tribological properties of matrix and skeletal titanium carbonitride composites were studied in dry friction conditions air. Experiments on wetting the TiCN–Cr3C2 composite by nickel–chromium alloys copper using sessile drop method performed to choose composition ascertain whether samples could be produced impregnation porous skeleton. experiments showed that nickel its formed a low contact angle (? ? 8°). In particular, Ni3Al intermetallic had ? < 5°, allowing it used as metal matrix. same situation was observed for copper. A technique developed producing TiN–Cr3C2 skeleton with melts, behavior cermets tested conditions. When starting impregnated intermetallic, coefficient decreased (? = 0.25). Structural studies conducted MIM-10 metallographic microscope X-ray diffraction DRON-2 diffractometer. hardness area thickness measured employing Falcon 9 tester (manufactured Netherlands). Thin cross sections made examine structure phase area. analyzed scanning electron microscopy. effect exerted counterface (steel 45, 40Kh, ShKh15) established. steel 60 HRC, increased distance. These results were, however, obtained at speeds loads. Friction losses loading increasing from 2 6 MPa 12 m/sec: reduced 0.23. TiCN–20% Cr3C2 may recommended antifriction materials use high-speed high-load units.