Effects of Composition of ZnO Ceramics Containing TiO2 onVaristor Properties
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2001年第1期
论文作者：徐庆
文章页码：5 - 9
摘 要：The development of low-voltage ZnO varistor ceramics containing TiO2 is presented in this report. The varistor properties of ZnO ceramics with different compositions were measured, and microstructure of the ceramics was investigated by XRD and SEM. The results show that the addition of TiO2 is beneficial to the decrease of varistor voltage （V1mA）. whereas it leads to the recession of nonlinear coefficient （α） and leakage current （lL）. The varistor properties of ZnO ceramics containing TiO2 can be effectively improved by introducing moderate amount of pre-fabricated ZnO seed grains. The behaviors of TiO2 and seed grains, as well as the mechanisms by which TiO2 and seed grains influence varistor properties, are discussed.
徐庆
摘 要：The development of low-voltage ZnO varistor ceramics containing TiO2 is presented in this report. The varistor properties of ZnO ceramics with different compositions were measured, and microstructure of the ceramics was investigated by XRD and SEM. The results show that the addition of TiO2 is beneficial to the decrease of varistor voltage （V1mA）. whereas it leads to the recession of nonlinear coefficient （α） and leakage current （lL）. The varistor properties of ZnO ceramics containing TiO2 can be effectively improved by introducing moderate amount of pre-fabricated ZnO seed grains. The behaviors of TiO2 and seed grains, as well as the mechanisms by which TiO2 and seed grains influence varistor properties, are discussed.
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