Copper and its alloys are among the most used metals for the industry. However, using bare copper and its alloys in technology is compromised because corrosion and poor abrasion resistance of copper impacts its performance in industrial and technological applications. In this paper, a strategy based on combining the laser chemical modification of metal's surface in a controlled atmosphere and laser texturing, followed by chemisorption of low energy compounds is effectively used for fabrication of a superhydrophobic coating with enhanced protective and functional properties on the mild copper alloy. It is shown that the formation of duplex cuprous/cupric oxide layers with a sequence of a dense and porous parts of cupric oxide layer allows one to successfully design the superhydrophobic coating with high photoactivity and enhanced stability of functional properties in corrosive liquids. The fabricated coatings display the enhanced resistance to abrasive wear, long preservation of a heterogeneous wetting mode in contact with the electrolyte, durable photoactivity, and low corrosion rate. Even more, the corrosion rate is notably decreasing with time upon prolonged contact with the corrosive medium.

中文翻译：

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脉冲激光诱导的三层氧化铜结构可实现超疏水涂层的持久多功能性

铜及其合金是该行业中最常用的金属之一。但是，在技术上使用裸铜及其合金会受到影响，因为铜的腐蚀和较差的耐磨性会影响其在工业和技术应用中的性能。在本文中，将可控气氛中金属表面的激光化学改性与激光织构化，然后对低能化合物进行化学吸附相结合的策略被有效地用于制造在弱铜上具有增强的保护和功能特性的超疏水涂层合金。结果表明，形成具有一系列的氧化铜层的致密和多孔部分的双氧化亚铜/氧化铜层可以使人们成功地设计出具有高光活性和增强的腐蚀性液体功能特性稳定性的超疏水涂层。所制备的涂层显示出增强的耐磨蚀性，与电解质接触的非均质润湿模式的长期保存，持久的光活性和低腐蚀速率。甚至，与腐蚀介质长时间接触后，腐蚀速率会随着时间显着降低。