Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V Alloy
In this study, plasma nitriding and multi-arc ion plating techniques were employed to enhance the load-bearing capacity of the TC4 alloy. The tribological properties were characterized, and the mechanisms were discussed in detail. Subsequently, the tribological properties of the coating enhanced wit...
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MDPI AG
2025-01-01
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| author | Hongyu Li Kai Le Ganggang Wang Zhenghao Ren Yuzhen Liu Zhenglong Yang Liwei Zheng Shusheng Xu |
| author_facet | Hongyu Li Kai Le Ganggang Wang Zhenghao Ren Yuzhen Liu Zhenglong Yang Liwei Zheng Shusheng Xu |
| author_sort | Hongyu Li |
| collection | DOAJ |
| description | In this study, plasma nitriding and multi-arc ion plating techniques were employed to enhance the load-bearing capacity of the TC4 alloy. The tribological properties were characterized, and the mechanisms were discussed in detail. Subsequently, the tribological properties of the coating enhanced with MoS<sub>2</sub> were then evaluated, and the results indicated that the plasma nitriding treatment, which exhibited optimal friction performance, resulted in the formation of a nitrided layer with a thickness of 98 μm on the surface of the TC4 alloy, thereby significantly improving its mechanical properties. Furthermore, the TiN coating samples treated with plasma nitriding demonstrated superior mechanical properties, achieving the highest hardness value (20 GPa), high load-carrying capacity (58 N) and the lowest wear rate (9.16 × 10<sup>−6</sup> mm<sup>3</sup>·N<sup>−1</sup>·m<sup>−1</sup>). Moreover, the tribological properties of MoS<sub>2</sub> deposited on the surface of the PN-2/TiN sample were significantly enhanced, which can be attributed to the synergistic effect of the excellent load-bearing characteristics of the plasma nitriding treatment and the wear resistance of the TiN layer. This study investigates the factors contributing to the superior tribological performance of the PN-2/TiN sample and the extended friction lifetime of the PN-2/TiN/MoS<sub>2</sub> sample. The composite coating provides a new method to improve the anti-friction of soft metals, especially titanium alloys, and is expected to be applied in the aerospace field. |
| format | Article |
| id | doaj-art-c4524b00ffce4f60bd8e71dc37e91583 |
| institution | Kabale University |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-c4524b00ffce4f60bd8e71dc37e915832025-01-24T13:39:04ZengMDPI AGLubricants2075-44422025-01-011313710.3390/lubricants13010037Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V AlloyHongyu Li0Kai Le1Ganggang Wang2Zhenghao Ren3Yuzhen Liu4Zhenglong Yang5Liwei Zheng6Shusheng Xu7School of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaShandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, ChinaShandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, ChinaState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaSchool of Chemistry and Materials Science, Ludong University, Yantai 264025, ChinaShandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264000, ChinaState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, ChinaIn this study, plasma nitriding and multi-arc ion plating techniques were employed to enhance the load-bearing capacity of the TC4 alloy. The tribological properties were characterized, and the mechanisms were discussed in detail. Subsequently, the tribological properties of the coating enhanced with MoS<sub>2</sub> were then evaluated, and the results indicated that the plasma nitriding treatment, which exhibited optimal friction performance, resulted in the formation of a nitrided layer with a thickness of 98 μm on the surface of the TC4 alloy, thereby significantly improving its mechanical properties. Furthermore, the TiN coating samples treated with plasma nitriding demonstrated superior mechanical properties, achieving the highest hardness value (20 GPa), high load-carrying capacity (58 N) and the lowest wear rate (9.16 × 10<sup>−6</sup> mm<sup>3</sup>·N<sup>−1</sup>·m<sup>−1</sup>). Moreover, the tribological properties of MoS<sub>2</sub> deposited on the surface of the PN-2/TiN sample were significantly enhanced, which can be attributed to the synergistic effect of the excellent load-bearing characteristics of the plasma nitriding treatment and the wear resistance of the TiN layer. This study investigates the factors contributing to the superior tribological performance of the PN-2/TiN sample and the extended friction lifetime of the PN-2/TiN/MoS<sub>2</sub> sample. The composite coating provides a new method to improve the anti-friction of soft metals, especially titanium alloys, and is expected to be applied in the aerospace field.https://www.mdpi.com/2075-4442/13/1/37TC4 alloyplasma nitridingTiN coatingMoS<sub>2</sub> coatingbearing capacitytribology |
| spellingShingle | Hongyu Li Kai Le Ganggang Wang Zhenghao Ren Yuzhen Liu Zhenglong Yang Liwei Zheng Shusheng Xu Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V Alloy Lubricants TC4 alloy plasma nitriding TiN coating MoS<sub>2</sub> coating bearing capacity tribology |
| title | Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V Alloy |
| title_full | Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V Alloy |
| title_fullStr | Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V Alloy |
| title_full_unstemmed | Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V Alloy |
| title_short | Enhanced Friction and Wear Properties of TiN/MoS<sub>2</sub> Composite Coating on the Surface of Plasma Nitrided Ti6Al4V Alloy |
| title_sort | enhanced friction and wear properties of tin mos sub 2 sub composite coating on the surface of plasma nitrided ti6al4v alloy |
| topic | TC4 alloy plasma nitriding TiN coating MoS<sub>2</sub> coating bearing capacity tribology |
| url | https://www.mdpi.com/2075-4442/13/1/37 |
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