One‐step preparation of the superhydrophobic Al alloy surface with enhanced corrosion and wear resistance,Materials and Corrosion

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One‐step preparation of the superhydrophobic Al alloy surface with enhanced corrosion and wear resistance
Materials and Corrosion ( IF 1.6 ) Pub Date : 2020-11-23 , DOI: 10.1002/maco.202012144
Tian Shi ₁ , Xuewu Li _{1,

2,

3} , Chuanwei Zhang ₁ , Hongxing Wang ₁ , Zhenyan He ₁ , Xuegang Zhou ₁ , Danni Yang ₁ , Hejie Yang ₄ , Binbin Zhang ₅ , Kang Yang ₆

Affiliation

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.

中文翻译：

一步法制备具有增强的耐腐蚀和耐磨性的超疏水铝合金表面

腐蚀和磨损故障是限制铝基功能材料的应用和开发的瓶颈。作为一种新的润滑技术，超疏水制备提供了一种解决铝合金腐蚀的有效方法。超疏水铝合金的制备方法主要是多步策略。在这项研究中，通过有效的一步电化学蚀刻工艺制备了超疏水铝合金。同时，已经通过扫描电子显微镜观察了其微观形态。润湿性已经通过视频光学接触角仪测量。腐蚀行为已通过电化学工作站进行了测试，磨损性能已通过摩擦测试仪进行了表征。结果表明，已经制备出了微纳米级的凹凸结构，并且所制备的表面表现出优异的超疏水性能。进一步的电化学和摩擦学测试表明，耐蚀性和耐磨性也得到了显着提高。这项研究提供了一种制备耐磨和耐腐蚀铝合金的新方法，以扩展多功能铝基工程材料的应用范围。

更新日期：2020-11-23

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