This article is cited in 28 papers

Mechanical properties, strength physics and plasticity

Influence of implantation of Au$^-$ ions on the microstructure and mechanical properties of the nanostructured multielement (TiZrHf VNbTa)N coating

A. D. Pogrebnyak^a, I. V. Yakushchenko^a, O. V. Bondar^a, O. V. Sobol'^b, V. M. Beresnev^c, K. Oyoshi^d, H. Amekura^d, Y. Takeda<sup>d

a</sup> Sumy State University
^b Khar'kov Polytechnical University
^c V. N. Karazin Kharkiv National University
^d National Institute for Material Science (NIMS), Tsukuba, Japan

Abstract: It has been found that the phase with the fcc lattice of the NaCl structural type is formed due to the vacuum-arc deposition of the nanostructured multicomponent (TiZrHfVNbTa)N coating. Implantation of negative Au$^-$ ions with a dose of 1 $\cdot$ 10$^{17}$ cm$^{-2}$ leads to the formation of a disordered polycrystalline structure without a preferred orientation of the fcc phase and nanocrystallites from 5–7 to 1–3 nm is size, which are dispersed in a layer up to 35 nm in depth. Nanohardness increases to 33 GPa, and the Vickers hardness reaches 51 GPa. Gold nanoclusters are formed in the near-surface region, while the fcc lattice and the formation of local Au regions are observed in the coating itself. Fragments with the hcp lattice are formed at depths above 180 nm because of the low nitrogen concentration.

Received: 09.02.2015

 English version: Physics of the Solid State, 2015, 57:8, 1559–1564

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