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A new type of (TiZrNbTaHf)N/MoN nanocomposite coating: Microstructure and properties depending on energy of incident ions
Abstract
A novel (TiZrNbTaHf)N/MoN nanocomposite coatings, which consist of the nitride of the high-entropy alloy and the binary nitride, were synthesized by vacuum-arc deposition at various substrate biases. The elemental composition, chemical bonding state, phase structure, microstructure and mechanical properties of the coatings were studied by high-resolution experimental methods: SIMS, GDMS, XPS, XRD, HR-TEM and nano-indentation. It was found that the chemical state of the (TiZrNbTaHf)N/MoN coatings has a complex nature, which consist of a mixture of nitrides of constituting elements. It was also shown that the coatings are based on B1 NaCl-structured γ-Mo2N-phase with a mixture of crystallographic orientations (111), (200), (220) and (311) together with the B1 NaCl-structured (TiZrNbTaHf)N solid-solution phase. First-principles calculations demonstrated that the metal sub-lattice of the (TiZrNbTaHf)N solid solution can be based on Ti1-xHfyTa1-x-y, Zr1-xHfyTa1-x-y, Zr0.25Ti0.25Ta0.5 ternary alloys, which have the lowest mixing energy. The HR-TEM results showed that the nanocomposite nitride coatings have nano-scale multilayer structure with modulation periods ranged from 20 nm to 25 nm. The maximum hardness of approximately 29 GPa demonstrated the coating deposited at a higher energy condition (−200 V) with the thinnest modulation period of bilayer of 20 nm (15 nm of (TiZrNbTaHf)N and 5 nm of Mo2N).
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Authors (11)
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A.a. Bagdasaryan
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A. V. Pshyk
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L. E. Coy
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P. Konarski
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V. I. Ivashchenko
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M. Kempiński
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N. R. Mediukh
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A. D. Pogrebnjak
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V. M. Beresnev
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S. Jurga
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Keywords
Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
COMPOSITES PART B-ENGINEERING
no. 146,
pages 132 - 144,
ISSN: 1359-8368 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Bagdasaryan A., Pshyk A., Coy L., Konarski P., Miśnik M., Ivashchenko V., Kempiński M., Mediukh N., Pogrebnjak A., Beresnev V., Jurga S.: A new type of (TiZrNbTaHf)N/MoN nanocomposite coating: Microstructure and properties depending on energy of incident ions// COMPOSITES PART B-ENGINEERING. -Vol. 146, (2018), s.132-144
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.compositesb.2018.04.015
- Verified by:
- Gdańsk University of Technology
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