Friction and wear behavior of hot isostatic pressed $Al_2O_3$-TiC was experimentally examined. Pin-on-disk type friction and wear apparatus was designed and manufactured for the experiment. The experiments were conducted under unlubricated sliding motion in low and high humid air with for constant normal load and three kinds of value of the sliding speed. $Al_2O_3$-TiC and steel were used as counterface materials. Friction coefficient, wear rate, and surface roughness were measured. Wear surface and wear debris were observed by microscope and analyzed by EDAX.
The results showed that the counterface materials, the sliding speed, and the moisture at the sliding surface had significant influence on the friction coefficient and wear rate of $Al_2O_3$-TiC.