Tribological analysis of kraft paper covered with exfoliated graphite films: Exploring the influence of electric current and test duration on graphene deformation, defect formation and friction - Oliveira, O. J. C.; Gonçalves, R. P. N.; Franzoli, D.; Queiroz, C. M.; Fukumasu, Newton Kiyoshi; Tschiptschin, André Paulo; Souza, R. M. (Wear, 2025)