Conductive nanocomposite ceramics as tribological and electrical contact materials Å. Öberg, Å. Kassman, B. André, U. Wiklund, M. Lindquist, E. Lewin, U. Jansson, H. Högberg, T. Joelsson and H. Ljungcrantz Eur. Phys. J. Appl. Phys., 49 2 (2010) 22902 Published online: 22 December 2009 DOI: 10.1051/epjap/2009122