Lattice distortion or cocktail effect dominates the performance of Tantalum-based high-entropy nitride coatings

Chang, Che-Ming; Hsiao, Yu-Ting; Chen, Yulin; Tsai, Cheng-Yuan; Lee, Ya-Jing; Ko, Ping-Hsu; Chang, Shou-Yi

doi:10.1016/j.apsusc.2021.151894

Cited by 32 publications

(13 citation statements)

References 49 publications

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“…The topographical features and cross‐sectional structure of three samples were characterized by AFM and SEM (Figure S2), respectively. All the samples exhibit typical columnar growth mode, and their surfaces are dome‐like, conforming to the previously reported surface features of nitrides 49 …”

Section: Resultssupporting

confidence: 88%

“…Furthermore, to assess the wear of HEN (NbMoTaW)N film after the friction test, a line scan was performed on its wear track using a surface profiler, and the results are shown in Figure 5D. The maximum depth of the (NbMoTaW)N film wear scar is 406 nm and the wear rate ( W r ) calculated by fitting the cross‐section area of the wear track is 2.89 × 10 −6 mm 3 /(N m), which is lower than that of the reported (NbMoTaW)N x films at similar nitrogen contents 69 and other tantalum‐based HEN coatings, 49 indicating superior wear resistance.…”

Section: Resultsmentioning

confidence: 77%

“…Therefore, relative to NbN, the surface of the NbMoN film could form wear debris containing MoO 3 during the friction process, and its random rolling during the sliding process will relieve the film from being worn away. For the HEN (NbMoTaW)N film, the formation of self‐lubricant MoO 3 and WO 3 should alleviate the wear 49,68 . Besides, the (NbMoTaW)N film possesses a higher H / E value relative to the NbN and NbMoN films 54 .…”

Section: Resultsmentioning

confidence: 99%

“…All the samples exhibit typical columnar growth mode, and their surfaces are dome-like, conforming to the previously reported surface features of nitrides. 49…”

Section: Microstructure and Compositionmentioning

confidence: 99%

“…For the HEN (NbMoTaW)N film, the formation of self-lubricant MoO 3 and WO 3 should alleviate the wear. 49,68 Besides, the (NbMoTaW)N film possesses a higher H/E value relative to the NbN and NbMoN films. 54 So the HEN (NbMoTaW)N film exhibits the best wear resistance.…”

Section: Tribological Behaviorsmentioning

confidence: 99%

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Simultaneous enhancement of hardness and wear and corrosion resistance of high‐entropy transition‐metal nitride

Yuan

Gao

et al. 2022

J Am Ceram Soc.

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Binary transition-metal nitrides (TMNs) are widely used as protective coating materials, and enhancing key performance characteristics are crucial to improving their robust and durable applications in harsh service environments.Compositional modulation via multiple elemental species offers an effective approach for optimizing physicochemical properties of TMNs, and establishing the composition-property relation is essential to the design of high-performance TMNs. In this work, we report on a comparative study of our synthesized NbN, NbMoN, and (NbMoTaW)N films and examined their microstructure, mechanical properties, and tribological and corrosion behaviors. The high-entropy (NbMoTaW)N film exhibits the highest hardness of 23.5 ± 1.35 GPa, which is ascribed to its high structural stability, increased elastic constant, and elastic modulus compared to the NbN and NbMoN films. The (NbMoTaW)N film also possesses the best wear resistance stemming from the highest H/E ratio and formation of self-lubricating MoO 3 and WO 3 species; moreover, this film shows the best corrosion resistance attributed to the sluggish diffusion of Cl − due to lattice contraction and the structural stability caused by high-entropy effect. This work demonstrates simultaneously enhanced hardness and wear and corrosion resistance in a high-entropy TMN, opening a pathway for developing a new generation of advanced protective coating materials.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 99%

“…All the samples exhibit typical columnar growth mode, and their surfaces are dome-like, conforming to the previously reported surface features of nitrides. 49…”

Section: Microstructure and Compositionmentioning

confidence: 99%

Section: Tribological Behaviorsmentioning

confidence: 99%

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Simultaneous enhancement of hardness and wear and corrosion resistance of high‐entropy transition‐metal nitride

Yuan

Gao

et al. 2022

J Am Ceram Soc.

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Research status of tribological properties optimization of high-entropy alloys: a review

Zhou

Yang

Zhang³

et al. 2023

J Mater Sci

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Synthesis of Medium Entropy Coatings and Study of the Influence of Bias Voltage and Nitrogen Flow on Their Microstructural and Tribological Properties

Grisales,

Chimá,

Gaitán

2024

J. of Materi Eng and Perform

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TiTaZrNb medium entropy coatings and their nitride forms (TiTaZrNb)Nx were synthesized by direct current magnetron sputtering. The study evaluated the bias voltage affects microstructure, chemical and phase composition of the metallic coatings. Also, the effect of nitrogen flow on the microstructural and tribological properties of the corresponding nitrides was studied. A change in the crystalline structure from BCC for TiTaZrNb coatings to FCC for (TiTaZrNb)Nx was observed. It was associated with the incorporation of nitrogen into the matrix and the consequent formation of a solid solution of (TiTaZrNb)Nx. An increase in the hardness and residual stresses of the metallic coating was observed with increasing bias voltage to − 130 V and of the nitride coating with increasing nitrogen flow to 12 sccm, reaching hardness values of 12.8 GPa and 25 GPa, respectively. A slight reduction in the hardness of the deposited nitride coating was observed at the higher nitrogen flow of 15 sccm, probably due to the formation of the TiN and ZrN phases. The higher hardness and lower wear rate of the (TiTaZrNb)Nx nitride coatings compared to the uncoated M2 steel samples demonstrate the protective effect against wear of these coatings.

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Lattice distortion or cocktail effect dominates the performance of Tantalum-based high-entropy nitride coatings

Cited by 32 publications

References 49 publications

Simultaneous enhancement of hardness and wear and corrosion resistance of high‐entropy transition‐metal nitride

Simultaneous enhancement of hardness and wear and corrosion resistance of high‐entropy transition‐metal nitride

Research status of tribological properties optimization of high-entropy alloys: a review

Synthesis of Medium Entropy Coatings and Study of the Influence of Bias Voltage and Nitrogen Flow on Their Microstructural and Tribological Properties

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