| 引用本文: | 范军,姚宏伟,蒲吉斌.高熵合金涂层磨损腐蚀性能研究进展及展望[J].中国表面工程,2024,37(6):21~43 |
| FAN Jun,YAO Hongwei,PU Jibin.Research Progress and Prospects of Anticorrosion and Wear-resistant High-entropy Alloy Coatings[J].China Surface Engineering,2024,37(6):21~43 |
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| 高熵合金涂层磨损腐蚀性能研究进展及展望 |
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范军1，2，姚宏伟2，蒲吉斌2
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1.中国科学院大学宁波材料工程学院 宁波 315201 ；2.中国科学院宁波材料技术与工程研究所海洋关键材料重点实验室 宁波 315201
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| 摘要: |
| 机械运动系统部件的磨损、腐蚀或磨损-腐蚀耦合损伤（磨蚀）是海洋工程设施与装备失效的最主要因素。涂层表面技术是目前广泛应用于提高部件服役性能与寿命的关键技术之一。其中，高熵合金涂层具有优异的强韧、耐磨、耐蚀等综合性能，对高熵合金涂层的开发和研究将拓展海洋装备零部件磨损、腐蚀防护涂层体系的选择范围和提升零部件表面综合服役性能。综述国内外高熵合金涂层在磨损、腐蚀和磨蚀方面的最新研究成果，从高熵合金涂层的主要制备方法出发，对比不同制备方法的优缺点，总结高熵合金涂层的摩擦磨损、腐蚀和磨蚀行为，探讨成分、结构、制备 / 后处理工艺以及服役温度对高熵合金涂层磨损、腐蚀和磨蚀性能的影响及其作用机理，重点介绍元素调控和第二相强化在优化高熵合金涂层耐腐蚀、耐磨损方面的研究进展。最后，指出当前高熵合金涂层磨损腐蚀研究中仍需解决的问题，并对其未来发展方向作出展望，这有助于推动高熵合金涂层在苛刻环境中的研究与应用。 |
| 关键词: 高熵合金涂层 磨损 腐蚀 磨蚀 |
| DOI：10.11933/j.issn.1007-9289.20231229007 |
| 分类号:TG156；TB114 |
| 基金项目:国家自然科学基金杰出青年基金（52325503） |
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| Research Progress and Prospects of Anticorrosion and Wear-resistant High-entropy Alloy Coatings |
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FAN Jun1，2，YAO Hongwei2，PU Jibin2
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1.Ningbo College of Materials Engineering, Chinese Academy of Sciences, Ningbo 315201 , China ；2.Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences, Ningbo 315201 , China
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| Abstract: |
| Wear, corrosion, and wear-corrosion synergism, namely, tribocorrosion acting on mechanical motion components are the most important factors in the failure of marine engineering facilities and equipment. Therefore, wear, corrosion, and tribocorrosion pose potential threats to marine economic development and operational safety. One-third to one-fourth of the energy of the world is wasted owing to friction, and the loss caused by the corrosion of marine infrastructure in China was more than 700 billion RMB in 2018. Because metals are the most used engineering materials, their protection has long been the pursuit of material studies; however, it is challenging to achieve. Presently, application of protective coatings, such as nitride, oxide, carbide, metal, and organic coatings on the surfaces of machine parts is considered an effective and economical way to reduce wear, corrosion, and tribocorrosion. Among various protective coatings, high-entropy alloy coatings have attracted research interest owing to their excellent comprehensive performance and unique advantages in wear, corrosion, and tribocorrosion resistance. In recent years, equiatomic or near-equiatomic high-entropy alloy coatings with BCC, FCC, and amorphous structures have been prepared as single-phase or multiphase coatings. These coatings have yielded abundant results in wear resistance and anticorrosion, providing a new approach for surface protection. To benefit from the on-demand design of wear-resistant and anticorrosion high-entropy alloy coatings, this article introduces the main preparation technologies for such coatings and reviews their latest results for corrosion, wear, and tribocorrosion from 2019 to the present. It elaborates the corrosion, wear, and tribocorrosion mechanisms of high-entropy alloy coatings from the perspectives of component design, structural regulation, doped elements, and postprocessing, thereby revealing the materials science tetrahedra of high-entropy alloy coatings. Moreover, the latest research results on the wear and corrosion properties of high-entropy alloy coatings are compared via tabulation. Some of the listed high-entropy alloy coatings show superior friction or corrosion properties to traditional protective coatings and have potential application prospects. Regarding the wear of high-entropy alloy coatings, synergistically improving the lubrication performance and surface mechanical properties contributes to their excellent tribological properties. When the temperature is low, typically lower than 300 ℃, the wear rate of a coating mainly depends on the hardness of the coating, and when the temperature is higher than 300 ℃, it mainly depends on the friction product. External particles, such as NbC, TiC, and CeO2, and in situ phase structures, such as nano-oxide AlV3O9 and coherent Ag-BCC / NbMoWTa-BCC, are two common materials for enhancing the tribological properties of high-entropy alloy coatings. Regarding the corrosion resistance of these coatings, using compact coatings and dense passive films has the advantage of a low corrosion current density. The corrosion current density of amorphous coatings, such as VAlTiCrSi, is generally lower than that of 304 stainless steels, and a compact high-entropy nitride coating with an FCC structure shows an expanding passivation zone. Similar to the method for reducing the wear of a coating, in situ formation of a reinforcing phase, such as TiC, promotes corrosion resistance. Interestingly, Si-related amorphous oxides uniformly distribute Cr in passive films, and Al improves the stability of a passive film to reduce corrosion. Moreover, the corrosion mechanism of a coating with a finer grain size transforms from intergranular corrosion to uniform corrosion through Cr segregation into the grain boundary. For tribocorrosion resistance, coatings should have excellent corrosion resistance and antiwear properties simultaneously. Therefore, the tribocorrosion resistance of high-entropy alloy coatings is generally derived from their compact structure, chemical inertness to active ions, and good mechanical performance. However, research on the tribocorrosion properties of high-entropy alloy coatings is limited, although VAlTiCr-based high-entropy alloy coatings have been extensively studied. According to these studies, wear destroys the chemical state of a coating surface and reduces its corrosion resistance. A multilayer coating with a hard layer or a composite coating with a nano-oxide forms an antiwear and corrosion-resistant passive film. In particular, the preoxidation process has been proven to have a positive effect on the tribocorrosion resistance of VAlTiCrNi amorphous coatings. From the aforementioned results, in the fields of wear, corrosion, and tribocorrosion resistance, the composition and structure of the oxide or passive film on the surface of a high-entropy alloy coating affect its friction, wear, and corrosion performance. The wear, corrosion, and tribocorrosion mechanisms of high-entropy alloy coatings tested in an atmospheric-pressure environment are discussed from the perspectives of composition, structure, and pre / post-treatment. Finally, the problems and perspectives regarding the corrosion, wear, and tribocorrosion of high-entropy alloy coatings are outlined to guide future studies. In this article, the in situ characterization of the oxide film / passive film originating from wear, corrosion, and tribocorrosion is discussed. The application of high-entropy alloy coatings on moving parts designed for deep-sea environments may be a key area for exploration in future. Additionally, a prediction model to improve the material design and study efficiency is expected. |
| Key words: high-entropy alloy coating wear corrosion tribo-corrosion |
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