Centrifugal gel forming of 316L TiC composites

Centrifugal gel forming was applied to the molding of 316L-TiC composite powders. The effect of the solids loading on the rheological behavior of 316L-TiC composite powders slurry was investigated, and the effect of the amount of initiator on the solidification time was also studied.Moreover, the relationship between the rotation speed and the density and strength of green body by centrifugal gel forming was analyzed. The results show that, using oleic acid as dispersion, slurry with good flowability and good stability has been prepared, at which a maximum solids volume fraction of 55% and the amount of initiator of 0.7%(mass fraction in the premix) can be obtained. Using the device made by ourselves and choosing the optimum rotation speed 3000 r/min, the green body with high density and no residue stomatal has been prepared, while the relative density and strength is 64.3% and 26.3 MPa, respectively. 316L-TiC alloy pipe is achieved by sintered at 1380℃ for 1 h in vacuum, which has a uniform shrinkage without deformation and the homogeneous distribution of the TiC particles.