Abstract: The effects of brazing temperature and time on the structure and property of the brazed joint between graphite and TZM alloys with Ti-based filler in vacuum were presented.The results show that the brazed joint is made up of two layers:reaction layer of Ti-TiC and solid solution layer of Ti-Mo.In some extent,the thickness of the brazing seam increases with the increasing of brazing temperature and time.After the brazing parameter being optimized,the thickness of the reaction layer is about 30-40μ m and the solid solution layer is about 70-80μ m.The structure of the brazed joint is uniform and the interface of graphite and TZM alloys is smooth.The shear-resistant strength of the brazed joint reaches 14.1-15.0 MPa.The remelting temperature is up to 1600℃ and thus the brazed joint can bear the thermal cycling from room temperature to 1600℃ without failure.