TY JOUR TI Laboratory studies of prototype nanostructured lubricants for comparison of tribological properties and abrasion resistance KW lubricant KW structure KW component concentration KW friction surface KW lubricant formulation KW laboratory tests KW tribotechnical pair JO Bulletin of scientific research results AU Zinov'ev, N.V. AU Kharlamov, P.V. AU Sklifus, Y.K. PY 2026 IS 2026 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"