The influence of polymer precursor additions on liquid phase sintering of SiC:Al(2)O(3):Y(2)O(3) has been evaluated. Two polymer precursors were used: polymethylhydrogensiloxane and D(4)V(i) (1,3,5,7-tetramethyl-1,3,5,7-tetraviniylcyclotetrasiloxane). The ceramic phase had the following composition in wt%: 91.6 SiC, 4.2 Al(2)O(3) and 4.2 Y(2)O(3). The composites were prepared using the following ceramic phase to polymer ratios in wt%: 82.7: 17.3; 74.0: 26.0 and 71.5: 28.5. Density measurements were carried out using a helium picnometry and the Archimedes method. The crystalline phases were identified by X-ray diffraction analysis and the microstructures were observed by optical and scanning electron microscopy.