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