caa a22 4500 445828102 CHVBK 20180317145305.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10854-010-0157-0 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0157-0 Nahm Choon-Woo Semiconductor Ceramics Lab., Department of Electrical Engineering, Dongeui University, 614-714, Busan, Korea aut DC accelerated aging behavior of Co-Dy-Nb doped Zn-V-M-based varistors with sintering process [Elektronische Daten] [Choon-Woo Nahm] The DC accelerated aging behavior of the Co-Dy-Nb doped Zn-V-Mn-based varistors was investigated at different sintering temperatures of 850-950°C. The microstructure of the samples consisted of ZnO grain as the main phase, and Zn3(VO4)2, ZnV2O4, and DyVO4 as the secondary phases, which acts as liquid-phase sintering aids. The nonlinear coefficient exhibited the highest value, reaching 57 for a sintering temperature of 950°C and the lowest value, reaching 8 for a sintering temperature of 850°C. Concerning stability, the varistors sintered at lower temperature than 925°C exhibited a relatively low stability with %ΔE1 mA more than 10%. However, the varistors sintered at higher temperature than 925°C exhibited a high stability. The varistors sintered at 925°C exhibited the most stable accelerated aging characteristics, with %ΔE1 mA=−3.9%, %Δα=−40.3%, %ΔεAPP′=−1.0%, and %Δtanδ=+19.1% for DC accelerated aging stress of 0.85 E1 mA/85°C/24h. Springer Science+Business Media, LLC, 2010 Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/4(2011-04-01), 444-451 0957-4522 22:4<444 2011 22 10854 https://doi.org/10.1007/s10854-010-0157-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0157-0 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Nahm Choon-Woo Semiconductor Ceramics Lab., Department of Electrical Engineering, Dongeui University, 614-714, Busan, Korea aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/4(2011-04-01), 444-451 0957-4522 22:4<444 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer