caa a22 4500 445826398 CHVBK 20180317145300.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10854-010-0088-9 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0088-9 Nahm Choon-Woo Semiconductor Ceramics Lab., Department of Electrical Engineering, Dongeui University, 614-714, Busan, Korea aut Effect of aluminum doping on electrical and dielectric aging behavior against current impulse of ZPCCY-based varistors [Elektronische Daten] [Choon-Woo Nahm] The electrical and dielectric aging behavior against current impulse (5-1,200 A) in the Zn-Pr-Co-Cr-Y-based varistors was investigated with aluminum doping level (0-0.01mol%). The varistors doped with 0-0.001mol% Al were destroyed at higher current impulse beyond 900 A and the varistors doped with 0.005-0.01mol% Al exhibited high stability against current impulse. The clamp ratio (K) at given current impulse ranges decreased with increasing Al doping level. The varistor doped with 0.01mol% Al exhibited the lowest K value, with 1.65 at a current impulse of 10 A and 2.38 at a current impulse of 1,200 A. The best electrical and dielectric stability against current impulse of 1,200 A was obtained at 0.01mol% Al, where $$\%\Updelta E_{1\;\text{mA/cm}^2} = -3.4\%$$, %Δα=0%, %ΔJ L=−26.3%, %Δε′APP=+3.4%, and %Δtanδ=−7.7%. Conclusively, Al doping level was optimized at 0.01mol% in terms of the surge withstand capability (SWC). Springer Science+Business Media, LLC, 2010 Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/1(2011-01-01), 77-83 0957-4522 22:1<77 2011 22 10854 https://doi.org/10.1007/s10854-010-0088-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0088-9 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 22/1(2011-01-01), 77-83 0957-4522 22:1<77 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer