Zirconium diboride (ZrB2) ceramic material has many excellent properties and gains great importance in variety of applications. In the present work, the influence of the gelation temperature, H2O, and polyethylene glycol on the morphology of ZrB2 particles was investigated. Increasing the gelation temperature, the particle shapes changed from sphere-like particles at 65 oC to a particle chain at 75 oC, and then form rod-like particles at 85 oC. Moreover, different concentration of polyethylene glycol with 1 and 3 M was added, the morphology of ZrB2 particles was prism and sphere-like, respectively. When the polyethylene glycol was added with 3M, the reunion between particles was obviously lowered. Furthermore, different amount of water with 4, 6, and 10 ml was added, the shape of ZrB2 particles was sphere-like and the average grain diameter was changed from 65, 25, to 20 nm.

Keywords: Gelation temperature, Polyethylene glycol, H2O, Morphology, Zirconium diboride.