Relationship between oxidation behavior and tribological properties of Mo V Cu N coatings

Mei, Haijuan; Ding, Ji Cheng; Wang, Rui; Li, Qiuguo; Zhao, Zhenting; Long, Dafeng; Wei, Xiaohui; Cai, Shiqian; Gong, Weiping; Wang, Qimin

doi:10.1016/j.surfcoat.2022.129067

Cited by 4 publications

(3 citation statements)

References 28 publications

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“…MoN x _4# formed a dense friction film with a thickness of approximately 100 nm and lots of Magn éli phases in the abrasion marks; the friction film behaved as a wear-resistant friction-reducing layer and blocked the inward diffusion of oxygen so that the tribological performance of MoN x _4# was optimal at 400 • C. At 500 • C, the thicker oxide layer on the surface began to liquefy, which to some extent had a lubricating effect but also caused a significant rise in coating wear. The next step might be to lower the friction coefficient of MoN x coatings by including Cu and Ag components [23,46]. At both RT and high temperatures, the MoAgN [23] coating with magnetron sputtering in the literature had a lower friction coefficient than the MoN x coating in this paper, but its wear rate was noticeably higher, which also highlights the advancement of HiPIMS for the coating's wear resistance.…”

Section: Tribological Propertiesmentioning

confidence: 58%

“…At 500°C, the thicker oxide layer on the surface began to liquefy, which to some extent had a lubricating effect but also caused a significant rise in coating wear. The next step might be to lower the friction coefficient of MoNx coatings by including Cu and Ag components [23,46]. At both RT and high temperatures, the MoAgN [23] coating with magnetron sputtering in the literature had a lower friction coefficient than the MoNx coating in this paper, but its wear rate was noticeably higher, which also highlights the advancement of HiPIMS for the coating's wear resistance.…”

Section: Tribological Propertiesmentioning

confidence: 58%

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Dry Friction Performances of MoNx Coatings Deposited by High–Power Pulsed Magnetron Sputtering

Dai

Wang

et al. 2023

Magnetochemistry

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A MoNx coating serves as an effective wear protection layer and is crucial for the investigation of its tribological characteristics at various temperatures. This study examined the tribological characteristics of MoNx coatings that were deposited through high-power pulsed magnetron sputtering (HiPIMS) in an Ar/N2 environment with varying N2 partial pressures. The microstructures and mechanical properties of the coatings were elucidated using scanning electron microscopy, grazing-incidence-angle X-ray diffraction, energy-dispersive spectroscopy, and nanoindentation. The dry friction performances of the coatings at different heating temperatures were studied using a ball-on-disk tribometer. The MoNx coating produced by HiPIMS was composed primarily of fcc−Mo2N and featured a fine, dense column crystal with a maximum hardness of 28.8 GPa. The MoNx coatings exhibited excellent lubrication and wear reduction properties at room temperature (RT). The dry friction performances of the MoNx coatings at elevated temperatures were expected to depend on the growth of the MoO3 tribolayer. At relatively low temperatures (300 °C and 400 °C), the MoO3 tribolayer grew slowly and was not enough to provide good lubrication, causing increases in the dry friction of the coatings. However, the δ−MoN phase formed in the MoNx coating deposited at a high N2 partial pressure could facilitate the formation of MoO3 and thus decreased the friction coefficient at 400 °C. At the relatively high heating temperature of 500 °C, however, the MoO3 tribolayer grew so rapidly that the oxide layer became thick, resulting in an increase in the wear rate. It is believed that tuning the growth rate of MoO3 via optimizing the composition and structure of the MoNx coatings might be a useful way to improve the dry friction at various elevated temperatures.

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Section: Tribological Propertiesmentioning

confidence: 58%

Section: Tribological Propertiesmentioning

confidence: 58%

Dry Friction Performances of MoNx Coatings Deposited by High–Power Pulsed Magnetron Sputtering

Dai

Wang

et al. 2023

Magnetochemistry

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“…Wang et al [ 10 ] reported that the MoN-V (22 at.%) coating demonstrated the highest hardness and the best wear resistance, as well as the lowest friction coefficient at 700 °C, which was mainly associated with the formation of lubricious glaze layers of V 2 O 5 and MoO 3 . Similarly, the addition of V into the Mo-Cu-N coatings also improved the coating hardness and wear resistance [ 11 , 12 ]. Due to the synergistic lubrication effect of MoO 3 , CuMoO 4 , and V 2 O 5 , an excellent wear performance was achieved at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of V/Mo Atomic Ratio on the Microstructure and Mechanical Properties of MoVCuN Coatings

Mei,

Lin,

et al. 2023

Materials

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To improve the gas ionization ratio, the Mo-V-Cu-N coatings were deposited by pulsed dc magnetron sputtering with assistance from an anode layer ion source, and the influence of the V/Mo atomic ratio was explored with regard to the microstructure and mechanical properties of the coatings. The findings of this study indicated that the MoVCuN coatings exhibited a solid solution phase of FCC B1-MoVN with a prominent (220) preferred orientation, and the deposition rate was found to decrease from 4.7 to 1.8 nm/min when the V/Mo atomic ratio increased. The average surface roughness of the MoVCuN coatings gradually decreased, and the lowest surface roughness of 6.9 nm was achieved at a V/Mo atomic ratio of 0.31. Due to the enhanced ion bombardment effect, the coatings changed from a coarse columnar to a dense columnar crystal structure, and promoted grain refinement at higher V/Mo atomic ratios, contributing to a gradual improvement in the compressive residual stress, hardness and adhesion strength of the coatings.

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Effect of Cu addition on the tribological properties and oxidation behavior of nanomultilayered AlTiN/Cu coatings

Mei,

Wang,

Ding

et al. 2024

Journal of Materials Research and Technology

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Relationship between oxidation behavior and tribological properties of Mo V Cu N coatings

Cited by 4 publications

References 28 publications

Dry Friction Performances of MoNx Coatings Deposited by High–Power Pulsed Magnetron Sputtering

Dry Friction Performances of MoNx Coatings Deposited by High–Power Pulsed Magnetron Sputtering

Effect of V/Mo Atomic Ratio on the Microstructure and Mechanical Properties of MoVCuN Coatings

Effect of Cu addition on the tribological properties and oxidation behavior of nanomultilayered AlTiN/Cu coatings

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