Microstructure, mechanical and tribological properties of CrSiC coatings sliding against SiC and Al2O3 balls in water

CrSiC coatings were speculated to be X-ray amorphous (A). Although the hardness of coatings fluctuated slightly (13.2-13.8 GPa), the CrSiC coatings showed poor wear resistance due to the decline of the crack resistance and toughness. Moreover, the friction coefficient (0.24-0.31) and the wear rate (2.97-7.66 × 10−6 mm3/Nm) of CrSiC/SiC trobopairs were lower than those of CrSiC/Al2O3 tribopairs (B and C).