Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Nanoscience and Technology: An International Journal
ESCI SJR: 0.228 SNIP: 0.484 CiteScore™: 0.37

ISSN Druckformat: 2572-4258
ISSN Online: 2572-4266

Nanoscience and Technology: An International Journal

Formerly Known as Nanomechanics Science and Technology: An International Journal

DOI: 10.1615/NanomechanicsSciTechnolIntJ.v6.i3.20
pages 193-202

EXPERIMENTAL INVESTIGATIONS OF MECHANICAL CHARACTERISTICS OF POWDER COATINGS ON AN EPOXY−POLYESTER SUBSTRATE BY NANOINDENTATION

A. G. Getmanov
Moscow Aviation Institute, National Research University, 4 Volokolamskoe Highway, Moscow, 125993, Russia
Yu. V. Kornev
Institute of Applied Mechanics, Russian Academy of Sciences, 7 Leningradsky Ave., Moscow, 125040, Russia
M. I. Martirosov
Moscow Aviation Institute, National Research University, 4 Volokolamskoe Highway, Moscow, 125993, Russia
Lev N. Rabinskiy
Moscow Aviation Institute (National Research University), 4 Volokolamskoe Highway, Moscow, 125993, Russia

ABSTRAKT

Nanoindentation of the surface of powder epoxy−polyester-based paint-and-lacquer coatings, deposited on a steel substrate, is described. The effect of the testing method on the identified mechanical properties is analyzed. The measurement results, obtained by a spherical indenter and a Berkovich indenter, are compared. The reduced modulus of elasticity, Young modulus, and hardness of the coatings are evaluated. The obtained experimental data demonstrate a substantial dependence of the determined mechanical properties of the powder coating on the type of the indenter. When a Berkovich indenter is used, the found Young modulus for coatings (0.6 GPa) is underrated in relation to the properties of the coatings, known from macro experiments (3 GPa). When a spherical indenter is used, the Young modulus is overrated (6.3 GPa).