%0 Journal Article %T Analysis methods hardening and their influence on tribological characteristics friction units %A Gradyskiy, Y.. %A Karpusenko, A.. %K wear, surface, material, item, processing, method %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov