Details

Autor(en) / Beteiligte

• Krysina, O.V.
• Prokopenko, N.A.
• Ivanov, Yu.F.
• Tolkachev, O.S.
• Shugurov, V.V.
• Petrikova, E.A.

Titel

Multi-layered gradient (Zr,Nb)N coatings deposited by the vacuum-arc method

Ist Teil von

• Surface & coatings technology, 2020-07, Vol.393, p.125759, Article 125759

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Multi-layered gradient (Zr,Nb)N coatings were deposited with vacuum-arc evaporation of pure Zr and Nb metal cathodes. The gradient of the Nb concentration through the thickness was obtained by varying the arc discharge current with a Nb cathode within 80–150 A under the constant pressure of a working Ar/N2 gas mixture and a constant current of arc discharge with a Zr cathode. These coatings were studied by scanning and transmission electron microscopes, X-ray diffraction analysis, micro- and nanoindentation, and tribological measurements. The synthesized coatings show a high hardness, relatively low Young's modulus, relatively high H/E ratio, a high degree of elastic recovery, low surface roughness, a low friction coefficient, and a low wear rate. These coatings also feature a multiphase and multi-layered nanocrystalline structure with alternation of only layers with higher and lower Nb concentration. •(Zr,Nb)N coatings with gradient of Nb concentration through the thickness are deposited by the vacuum-arc deposition.•The physical, mechanical, and tribological properties;the structure, phase and elemental composition are presented.•A gradientcoating features a multiphase nanocrystalline structure and improved properties compared to a homogeneous coating.•Multi-layered gradient (Zr,Nb)N coatings possess high hardness, wear resistance, high H/E ratio, and elastic recovery