One-step preparation of the superhydrophobic Al alloy surface with enhanced corrosion and wear resistance |
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Authors: | Tian Shi Xuewu Li Chuanwei Zhang Hongxing Wang Zhenyan He Xuegang Zhou Danni Yang Hejie Yang Binbin Zhang Kang Yang |
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Affiliation: | 1. School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an, China;2. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, China;3. CAS Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China;4. School of Mechatronic Engineering, Zhengzhou University of Industrial Technology, Zhengzhou, China |
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Abstract: | Corrosion and wear failures are bottlenecks for restricting applications and developments of Al-based functional materials. As a new lubrication technology, superhydrophobic preparation provides an effective way to settle Al alloy corrosion. The preparation methods of superhydrophobic Al alloys are mainly multistep strategies. In this study, superhydrophobic Al alloy, has been prepared by an efficient one-step electrochemical etching process. Meanwhile, its micromorphology has been observed by a scanning electron microscope. The wettability has been measured by video optical contact angle meter. The corrosion behavior has been tested by electrochemical workstation, and wear performance has been characterized by friction tester. The results show that the micro-nanoterraced concave–convex structure has been fabricated and an as-prepared surface exhibits excellent superhydrophobic behavior. Further electrochemical and tribological tests show that corrosion resistance and wear resistance have also been significantly improved. This study provides a new method to prepare wear-resistant and corrosion-resistant Al alloy for widening applications of multifunctional Al-based engineering materials. |
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Keywords: | Al alloy corrosion resistance electrochemical test superhydrophobic behavior wear resistance |
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