苏永要,彭浩,徐照英,张腾飞,王锦标,余伟杰,阮海波.Mo-DLC/Mo薄膜在甲醇中的摩擦学性能研究[J].表面技术,2025,54(9):121-129.
SU Yongyao,PENG Hao,XU Zhaoying,ZHANG Tengfei,WANG Jinbiao,YU Weijie,RUAN Haibo.Tribological Properties of Mo-DLC/Mo Films in Methanol[J].Surface Technology,2025,54(9):121-129 |
| Mo-DLC/Mo薄膜在甲醇中的摩擦学性能研究 |
| Tribological Properties of Mo-DLC/Mo Films in Methanol |
| 投稿时间：2024-09-19 修订日期：2024-12-18 |
| DOI：10.16490/j.cnki.issn.1001-3660.2025.09.010 |
| 中文关键词: 磁控溅射 DLC薄膜 过渡层 摩擦磨损 甲醇 |
| 英文关键词:magnetron sputtering DLC film transition layer friction and wear methanol |
| 基金项目:重庆文理学院塔基计划(R2023CL01);重庆市技术创新与应用发展专项(cstc2019jscx-fxydX0046);重庆市永川区科技局项目(2024yc-jbgs20004) |
| 作者 | 单位 |
| 苏永要 | 重庆文理学院 材料科学与工程学院，重庆 402160 |
| 彭浩 | 重庆理工大学 材料科学与工程学院，重庆 400054 |
| 徐照英 | 重庆文理学院 材料科学与工程学院，重庆 402160 |
| 张腾飞 | 重庆文理学院 材料科学与工程学院，重庆 402160 |
| 王锦标 | 重庆文理学院 材料科学与工程学院，重庆 402160 |
| 余伟杰 | 重庆工程职业技术学院 智能制造与交通学院，重庆 402260 |
| 阮海波 | 重庆文理学院 材料科学与工程学院，重庆 402160 |
|
| Author | Institution |
| SU Yongyao | College of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China |
| PENG Hao | College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China |
| XU Zhaoying | College of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China |
| ZHANG Tengfei | College of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China |
| WANG Jinbiao | College of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China |
| YU Weijie | School of Intelligent Manufacturing and Transportation, Chongqing Vocational Institute of Engineering, Chongqing 402260, China |
| RUAN Haibo | College of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China |
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| 中文摘要: |
| 目的 甲醇燃料的应用给内燃机喷射系统关键运动部件的稳定、高效运行带来了挑战。基于关键部件在减摩抗磨方面的迫切需求，在高速钢表面设计并制备Mo掺杂的类金刚石(Mo-DLC)薄膜。方法 采用磁控溅射技术，在高速钢表面制备具有Mo过渡层的Mo-DLC/Mo薄膜，并与未制备过渡层的Mo-DLC薄膜进行对比研究。利用激光拉曼光谱仪、扫描电子显微镜、纳米压痕仪和摩擦磨损试验机等检测设备，对薄膜的微观结构、形貌、力学性能、摩擦磨损性能进行系统研究。结果 Mo-DLC/Mo薄膜的内应力约为1.85 GPa，膜基结合力约为210 mN。与未制备过渡层的Mo-DLC薄膜(2.18 GPa，100 mN)相比，内应力降低了约15%，膜基结合力提高了110%。此外，Mo-DLC/Mo薄膜还具有优异的耐磨损性能和环境适应性，在空气和甲醇中的磨损率均较低，分别为4.6×10−8、5.8×10−8 mm3/(N.m)。结论 Mo过渡层对Mo-DLC的力学性能、摩擦学性能的影响显著，Mo-DLC/Mo薄膜在甲醇中展现出优异的摩擦磨损性能，可为低应力DLC的制备及其在醇类内燃机行业的应用提供理论基础和技术储备。 |
| 英文摘要: |
| The application of methanol fuel presents significant challenges for the stable and efficient operation of key moving components in internal combustion engine injection systems. These challenges are primarily manifested in the increased friction and wear rates experienced by these components when exposed to methanol, which can lead to premature failure and decreased operational efficiency. To address these issues, there is an need for the development of materials with superior friction-reducing and wear-resistant properties. The work aims to meet this demand by designing and fabricating molybdenum-doped diamond-like carbon (Mo-DLC) films on high-speed steel surfaces, with a focus on enhancing their performance in methanol-based environments. Therefore, the Mo-DLC films were prepared with magnetron sputtering technology, a widely recognized method for depositing thin films with precise control over their composition and structure. To study the impact of the Mo transition layer, Mo-DLC films with and without Mo layer were prepared on high-speed steel substrates. The comparative study was conducted to evaluate the differences in their micro-structural, morphological, mechanical and tribological properties. The micro-structural characterization of the films was performed with laser Raman spectroscopy, providing information on the chemical bonds and disorder within the films. Scanning electron microscopy (SEM) was employed to observe the cross-sectional morphology and identify any defects. The mechanical properties, including hardness and elastic modulus, were assessed through nano-indentation. Finally, the tribological properties of the films were evaluated with a wear tester in methanol and air. The results of the study revealed that the Mo-DLC film with the Mo transition layer exhibited an internal stress of approximately 1.85 GPa, significantly lower than 2.18 GPa observed in the Mo-DLC film without the transition layer. This reduction in internal stress could be attributed to the Mo transition layer, which served to buffer the mismatch in mechanical properties between the film and the substrate. The film-substrate adhesion strength was also markedly improved, increasing from 100 mN of the film without the transition layer to 210 mN of the film with the transition layer, representing an increase of 110%. In addition to the improvement in mechanical properties, the Mo-DLC/Mo films demonstrated excellent wear resistance and environmental adaptability. The wear rates in both air and methanol were significantly lower than those of the Mo-DLC film without the transition layer, with values measured at 4.6×10−8 mm³/N.m and 5.8×10−8 mm³/(N.m), respectively. This indicated that the Mo-DLC/Mo films were not only more resistant to wear but also more consistent in their performance across different environments, making them well-suited for use in methanol-fueled engines. To sum up, by reducing internal stress and improving film-substrate adhesion, the Mo transition layer enables the Mo-DLC/Mo films to achieve outstanding friction and wear performance in methanol-based environments. The research findings provide a solid theoretical foundation and practical guidance for the preparation of low-stress DLC films, which can be invaluable for their application in the methanol internal combustion engine industry. |
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