caa a22 4500 463230477 CHVBK 20180405153240.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-1350-7 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1350-7 Microstructure and electrical properties of ZnO-based varistors prepared by high-energy ball milling [Elektronische Daten] [Hong-Yu Liu, Hui Kong, Xue-Ming Ma, Wang-Zhou Shi] ZnO-based varistor ceramics were prepared at sintering temperatures ranging from 900°C to 1,300°C, by subjecting the mixed oxide powders to high-energy ball milling (HEBM) for 0, 5, 10 and 20h, respectively. Varistor ceramics prepared by HEBM featured denser body, better electrical properties sintered at low-temperature than at traditional high-temperature. The high density is due to the refinement of the crystalline grains, the enhanced stored energy in the powders coming from lattice distortion and defects as well as the promotion of liquid-phase sintering. Good electrical properties is attributed to proper microstructure formed at low-temperature and improved grain boundary characteristics resulting from HEBM. With increasing sintering temperatures, the electrical properties and density became worse due to the decrease in amount of Bi-rich phase. Temperature increased up to 1,200°C or above, the Bi-rich phase vanished and the ceramics exhibited very low nonlinear coefficient. Springer Science+Business Media, LLC, 2006 Liu Hong-Yu Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut Kong Hui Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut Ma Xue-Ming Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut Shi Wang-Zhou Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2637-2642 0022-2461 42:8<2637 2007 42 10853 https://doi.org/10.1007/s10853-006-1350-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1350-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Hong-Yu Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut NATIONALLICENCE 700 1- Kong Hui Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut NATIONALLICENCE 700 1- Ma Xue-Ming Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut NATIONALLICENCE 700 1- Shi Wang-Zhou Department of Physics, East China Normal University, 3663 North Zhongshan Road, 200062, Shanghai, China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/8(2007-04-01), 2637-2642 0022-2461 42:8<2637 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer