TY JOUR TI TO THE QUESTION OF SURFACE TREATMENT OF CPG PARTS IN THE PROCESS OF APPLYING COATINGS ON THEM KW CYLINDER-PISTON GROUP KW GALVANIC-PLASMA MODIFICATION KW HEAT-PROTECTIVE COATING KW JET-ABRASIVE TREATMENT KW AVERAGE ROUGHNESS KW COEFFICIENT OF FRICTION. JO Voronezh Scientific-Technical Bulletin AU Al-Bdeiri, M.S. AU Krasilnikov, V.V. AU Kadyrmetov, A.M. AU Sergeev, S.V. PY 2022 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov