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Volume 13
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10.3390/coatings13010119
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Article

Structure, Mechanical and Thermal Properties of TiSiWN Coatings

by
Wen Hu
1,
Jianwei Du
1,
Zheren Liu
1,
Xu Sun
1 and
Li Chen
1,2,*
1
State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
2
Zhuzhou Cemented Carbide Cutting Tools Co., Ltd., Zhuzhou 412007, China
*
Author to whom correspondence should be addressed.
Coatings 2023, 13(1), 119; https://doi.org/10.3390/coatings13010119
Submission received: 26 December 2022 / Revised: 5 January 2023 / Accepted: 5 January 2023 / Published: 8 January 2023
(This article belongs to the Section Corrosion, Wear and Erosion)
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Abstract

Elemental alloying has been proven to be a valid approach for improving the performance of coatings and has attracted significant research attention. This study aims to explore the impact of W-addition on the structure, mechanical and thermal properties of arc evaporated TiSiN coatings. Ti0.88Si0.12N coating presents a single-phase structure of fcc-(Ti, Si)N, while Ti0.88Si0.08W0.04N and Ti0.84Si0.09W0.07N coatings show a fcc-(Ti, Si, W)N and bcc-W dual-phase structure. As the W content increases, the surface quality of our coatings is obviously improved on account of the pronounced reduction in growth defects, including macroparticles and holes. Introduction of W slightly increases the hardness from 40.0 ± 0.5 GPa for Ti0.88Si0.12N to 41.6 ± 1.1 GPa for Ti0.88Si0.08W0.04N and 42.0 ± 1.0 GPa for Ti0.84Si0.09W0.07N. All our coatings possess a high thermal stability with their hardness values remaining above 38 GPa even after annealing at 1100 °C. Meanwhile, as a result of the suppressed anatase to rutile TiO2 transformation, alloying with W ameliorates the oxidation resistance of TiSiN coatings. After 750 °C oxidation for 10 h, the W-containing coatings only reveal oxide layers of ~301.5 (Ti0.88Si0.08W0.04N) and 279.2 nm (Ti0.84Si0.09W0.07N), whereas Ti0.88Si0.12N coating has already been entirely oxidized.
Keywords: TiSiWN coatings; thermal properties; hardness TiSiWN coatings; thermal properties; hardness

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MDPI and ACS Style

Hu, W.; Du, J.; Liu, Z.; Sun, X.; Chen, L. Structure, Mechanical and Thermal Properties of TiSiWN Coatings. Coatings 2023, 13, 119. https://doi.org/10.3390/coatings13010119

AMA Style

Hu W, Du J, Liu Z, Sun X, Chen L. Structure, Mechanical and Thermal Properties of TiSiWN Coatings. Coatings. 2023; 13(1):119. https://doi.org/10.3390/coatings13010119

Chicago/Turabian Style

Hu, Wen, Jianwei Du, Zheren Liu, Xu Sun, and Li Chen. 2023. "Structure, Mechanical and Thermal Properties of TiSiWN Coatings" Coatings 13, no. 1: 119. https://doi.org/10.3390/coatings13010119

APA Style

Hu, W., Du, J., Liu, Z., Sun, X., & Chen, L. (2023). Structure, Mechanical and Thermal Properties of TiSiWN Coatings. Coatings, 13(1), 119. https://doi.org/10.3390/coatings13010119

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