Tribology of Titanium Boride Sliding against Silicon Carbide at Elevated Temperatures
Friction and wear tests of TiB2 sliding against SiC were conducted without lubricant from room temperature to 1200°C in air and in vacuum. The friction coefficient of the couple of TiB2/SiC is affected obviously by the oxidation of TiB2. It increases with the increase of temperature and reaches a maximum at some temperature in air, then decreases remarkably. The friction coefficient of TiB2/SiC in vacuum exhibites almost a constant and keeps smaller value than that in air. Transition of TiB2 onto the sliding surface of SiC was observed, which improved the wear resistance of SiC at high temperatures.
Yu Zhou, Shan-Tung Tu and Xishan Xie
H. N. Xiao et al., "Tribology of Titanium Boride Sliding against Silicon Carbide at Elevated Temperatures ", Key Engineering Materials, Vols. 353-358, pp. 1580-1583, 2007