Effect of Ni and Cr on the stability of leakage current for spinel-reduced ZnO varistor ceramics
スポンサーリンク
概要
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With a new concept of reducing the spinel particles in ZnO varistor ceramics (ZVC), the molar ratio of Sb2O3 (MS)/Bi2O3 (MB) and the effect of the sintering temperature (TS) on densification behavior and varistor voltage (Vb: V1mA/mm) were investigated. The densification behavior of ZVC during the sintering process was significantly affected by the MS/MB, and the densification curve was shifted to a lower temperature with a decreasing MS/MB. Based on these experimental results, four types of spinel-reduced ZnO varistor ceramics (SRZVC) were fabricated to investigate the effect of transition elements such as Ni and Cr on electric stability of the resistive leakage current (Ir). These experiments revealed that electric stability of Ir depended on the contained transition elements, and was influenced by the segregating of transition elements in spinel particles.
著者
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ISHIBE Shinji
Transmission & Distribution Systems Center, Mitsubishi Electric Corp.
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KOBAYASHI Masahiro
Transmission & Distribution, Transportation Systems Center, Mitsubishi Electric Corp
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YAMADA Akira
Advanced Technology R&D Center, Mitsubishi Electric Corp.
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Kato Tomoaki
Advanced Technol. R&d Center Mitsubishi Electric Corp.
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KAWAMATA Iwao
Transmission & Distribution Systems Center, Mitsubishi Electric Corporation
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TAKADA Yoshio
Transmission & Distribution Systems Center, Mitsubishi Electric Corporation
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YAMADA Akira
Advanced Technology R&D Center, Mitsubishi Electric Corporation
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ISHIBE Shinji
Transmission & Distribution Systems Center, Mitsubishi Electric Corporation
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KATO Tomoaki
Advanced Technology R&D Center, Mitsubishi Electric Corporation
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KAWAMATA Iwao
Transmission & Distribution Systems Center, Mitsubishi Electric Corporation
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KOBAYASHI Masahiro
Transmission & Distribution Systems Center, Mitsubishi Electric Corporation
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