A novel liquid precursor for ZrC was prepared by blending of polyzirconoxanesal (PNZ) and propargyl
modified novolac resin(PN). The precursor could be converted into ZrC upon heat treatment at 1 600℃. The crosslinking
behavior of PNZ-PN precursor was characterized by FT-IR and DSC. The thermal stability of the cured PNZPN
was evaluated by TGA. The microstructure and components of the ceramic samples were analyzed by XRD,SEM
and elements analysis. The results showed that the ceramic sample consisted of ZrO2 below 1 200℃ and low crystalline
ZrC appeared initially at 1 400℃ due to carbothermal reduction. At 1 600℃, the ZrO2could be converted into pure
ZrC completely. The ZrO2crystalline phase and carbon content in 1 600℃ ceramic samples could be controlled by the
amount of PN to get near pure phase ZrC with free carbon of 1. 66%. The Zr, and C elements are well distributed in
the ceramic sample consisted of high crystalline degrees of ZrC particles with a size distribution of 100 to 200 nm.