Abstract: Graphite slurry was prepared by gelcasting process.The influences of types of graphite powders, pH value, dispersant and solid loading on the viscosity of slurry were investigated.The effects of slurry temperature on gel time and acetylacetone on the flexural strength of graphite green body were studied.The results show that the fluidity properties of graphite has the best when type of graphite is isostatic pressing graphite powder, pH value is 7, content of dispersant solution(respect to graphite weight) is 4wt%, and solid loading is 50vol%.When the slurry temperature is 3 ℃,the gel time is 5.6 min.Flexural strength of green body is 15.8 MPa when the content of acetylacetone is 0.6wt%.

Key words: graphite;gelcasting;viscosity;process