Journal of the Korean Ceramic Society (한국세라믹학회지)
- Volume 37 Issue 2
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- Pages.186-193
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- 2000
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- 1229-7801(pISSN)
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- 2234-0491(eISSN)
Sintering and the Electrical Properties of Co-doped $ZnO-Bi_2O_3-Sb_2O_3$ Varistor System
Co를 첨가한 $ZnO-Bi_2O_3-Sb_2O_3$ 바리스터의 소결 및 전기적 특성
Abstract
Effects of 1.0 mol% CoO addition on sintering and the electrical properties of ZnO-Bi2O3-Sb2O3(ZBS) varistor system with 3.0 mol% co-addition of Sb2O3 and Bi2O3 at various Sb/Bi ratio (0.5, 1.0, and 2.0) were investigated. Cobalt had little influence on the liquid-phase formation and the pyrochlore decomposition temepratures of ZBS, while densification was mainly dependent on Sb/Bi ratio: when Sb/Bi=0.5, excess Bi2O3 irrelevant to the formation of pyrochore(Zn2Sb3Bi3O14) forms eutectic liquid at ~75