Abstract
The influences of pre-firing process and sintering temperature on the microstructure and electrical properties of ZnO-Bi2O3-TiO2-Sb2O3-MnO2-CoO low-voltage varistor ceramics were studied. Especially, twin boundaries and exaggerated grain growth (EGG) were observed here, and the mechanism of EGG was discussed. It seems that the formation of twin boundaries has a correlation with Sb2O3 content and sintering temperature, and that twin boundaries have a great influence in grain growth of ZnO.
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Zhang, C., Zhou, D., Lu, W. et al. Microstructure and properties of low-voltage ZnO varistor ceramics. Journal of Materials Science: Materials in Electronics 12, 357–360 (2001). https://doi.org/10.1023/A:1011245624525
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DOI: https://doi.org/10.1023/A:1011245624525