A study on microstructure for influence on operating voltage of zinc-oxide ceramic varistor

Abstract

In this study, the metal oxide TiO2 was selected as the control material for grain growth in order to lower the operating voltage of low-voltage high-energy absorbing element, and in order to review the influence of change in the added amount of oxide TiO2 on the crystal structure and voltage-current characteristics, the crystal structure directly influencing the dynamic voltage was measured with electronic scan microscope, and to check the potential as a low-voltage varistor, the voltage-current characteristics were measured and checked. © 2012 Springer-Verlag Berlin Heidelberg.