TY JOUR TI THE EFFECT OF ROLLING MODES ON THE RELATIVE BEARING LENGTH OF THE ELECTRIC SPARK SURFACE COATINGS KW alloying KW deformation KW rolling KW roughness KW surface KW length KW microhardness KW thickness KW profilogram KW Abbott-Firestone curve JO Transport engineering AU Zhuldybin, A.A. AU Vladimirov, A.A. AU Shapovalov, A.I. PY 2026 IS 2026 PB Bryansk State Technical University