Nanometric-layered CrN/TiN thin films: mechanical strength and thermal stability

Nanometric-layered CrN/TiN coatings were deposited using unbalanced magnetron sputtering. The layered coating structure was characterised by X-ray diffractometry, and the mechanical properties were measured by nano-indentation and scratch test. High temperature annealing at 400–750 °C was carried ou...

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Veröffentlicht in:Thin solid films 2003-01, Vol.424 (1), p.99-102
Hauptverfasser: Zeng, X.T., Zhang, S., Sun, C.Q., Liu, Y.C.
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creator Zeng, X.T.
Zhang, S.
Sun, C.Q.
Liu, Y.C.
description Nanometric-layered CrN/TiN coatings were deposited using unbalanced magnetron sputtering. The layered coating structure was characterised by X-ray diffractometry, and the mechanical properties were measured by nano-indentation and scratch test. High temperature annealing at 400–750 °C was carried out to investigate the thermal stability of the coating structure and mechanical properties. For comparison, samples of TiN and CrN deposited under similar conditions were also annealed and tested. The results showed that nano-layered CrN/TiN has excellent mechanical and thermal properties. Nano-hardness of 40 GPa and scratch adhesion of 80 N were achieved at a wavelength of 7.5 nm and a substrate bias of −80 V. The coating demonstrates application prospects in the stamping/cutting tools industry.
doi_str_mv 10.1016/S0040-6090(02)00921-5
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subjects Coatings
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Hardness and oxidation
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Nanostructures
Physical vapour deposition
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
title Nanometric-layered CrN/TiN thin films: mechanical strength and thermal stability
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