Abstract:The friction and wear properties of TiAl alloy were measured using a ball-on-disc type tribometer under sliding against SiC counterpart in dry condition an different temperature (20℃，300℃ and 600℃). The relationship between temperature and wear rate, friction coefficient, and topography of wear mark as well as wear mechanism of TiAl alloy was discussed. The results shown that the wear loss of TiAl alloy increased with the rise of temperature, the wear mechanisms of TiAl alloy are grinding abrasion and grain-abrasion at 20℃, and the oxidation abrasion increased with an increase in temperature, especially at 600℃. However, the wear loss of SiC counterpart is obviously higher at 20℃ than that of 300℃ and 600℃, this is because the wear mechanisms of SiC counterpart translation from intergranular fracture to delamination abrasion with the increase of temperature.