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Warcholinski, B.; Gilewicz, A.; Kuprin, A.S.; Tolmachova, G.N.; Ovcharenko, V.D.; Kuznetsova, T.A.; Zubar, T.I.; Khudoley, A.L.; Chizhik, S.A.
Vacuum, October 2018, 2018-10-00, Letnik: 156Journal Article
Ternary chromium based coatings (Cr-O-N) were formed on HS6-5-2 steel substrates using a vacuum arc plasma flux coating system at different relative oxygen concentrations, O2(x) = O2/(N2 + O2). The mechanical and tribological properties of the coatings were characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), hardness measurements, wear test and adhesion tests (scratch test and Daimler-Benz test). Special attention was paid to coating adhesion and failure modes in the adhesion tests. The coefficient of friction, wear rate and adhesion decreased as the relative oxygen concentration increased. Hardness of the coatings showed the opposite effect, increasing from approximately 19 GPa–30 GPa. The dominant failure mode of Cr-O-N coatings was abrasion. Individual micro fragmentation was also observed for Cr-O-N coating with O2(x) = 20%. •Cr-O-N coatings were deposited using cathodic arc evaporation at various relative oxygen concentration.•Adhesion is strongly dependent on oxygen concentration in the coating.•An increase in the relative oxygen concentration results in hardness increase and adhesion decrease.•Coefficient of friction and wear rate decrease with an increase in the relative oxygen concentration.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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