Preparation of ZnO crystal by sol-gel method
(1. State Key Laboratory for Powder Metallurgy, Central South University,
Changsha 410083, P.R.China;
2. Institute of Metallurgy Physical Chemistry and New Chemical Materials,
Central South University, Changsha 410083, P.R.China)
Changsha 410083, P.R.China;
2. Institute of Metallurgy Physical Chemistry and New Chemical Materials,
Central South University, Changsha 410083, P.R.China)
Abstract: A new method to prepare ZnO crystal was put for, ward. The preparation process was studied and the mechanism of this method was also discussed. The results show that the sol particles will aggregate when being dehydrated and will form into hard compact gel body through the hard agglomeration between particles. This dry gel is a hard compact agglomeration composed of the first sol particles. At high sintering temperature, the small compacted particles will easily grow up and form a fine ZnO crystal.
Key words: ZnO; sensitive ceramics; crystal; sol-gel