Purpose

The purpose of this paper is to investigate the effects of load and speed on the corrosive wear performance of Al coating in 3.5% NaCl solution, which provided an experimental reference for the anti-corrosion engineering on offshore platforms.

Design/methodology/approach

A layer of Al coating was prepared on S355 steel using an arc spraying. The corrosive wear test was carried out with CFT–1 type surface property tester. The effects of load and speed on the corrosive wear performance of Al coating were investigated and the wear mechanism was also discussed. The electrochemical tests were conducted using a CHI660E type electrochemical workstation, the anti-corrosion mechanism was analyzed.

Findings

The average coefficient of frictions (COFs) of Al coating under loads of 1.5, 2.5 and 3.5 N are 0.745, 0.847 and 0.423, the wear mechanism is abrasive wear. The average COFs of Al coating at the speeds of 200, 400 and 600 rpm are 0.745, 0.878 and 0.617, respectively, the wear mechanism at the speeds of 200 and 400 rpm are abrasive wear, while that at the speed of 600 rpm is abrasive wear and fatigue wear. The anti-corrosion mechanism is the isolation of Cl^– corrosion and cathodic protection of sacrificial anode.

Originality/value

This paper mainly studied corrosive wear and electrochemical corrosion performances of Al coating. This study hereby confirms that this manuscript is the original work and has not been published nor has it been submitted simultaneously elsewhere. This paper further confirms that all authors have checked the manuscript and have agreed to the submission.

中文翻译：

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电弧喷涂Al涂层在3.5％NaCl溶液中的腐蚀磨损和电化学腐蚀性能

目的

本文的目的是研究载荷和速度对3.5％NaCl溶液中Al涂层腐蚀磨损性能的影响，为海上平台的防腐蚀工程提供实验参考。

设计/方法/方法

使用电弧喷涂在S355钢上制备了一层Al涂层。腐蚀磨损测试是使用CFT-1型表面性能测试仪进行的。研究了载荷和速度对铝涂层腐蚀磨损性能的影响，并讨论了磨损机理。使用CHI660E型电化学工作站进行电化学测试，分析了其防腐蚀机理。

发现

Al涂层在1.5、2.5和3.5 N的载荷下的平均摩擦系数（COFs）为0.745、0.847和0.423，磨损机理是磨料磨损。Al涂层在200、400和600 rpm速度下的平均COF分别为0.745、0.878和0.617，200和400 rpm速度下的磨损机理为磨料磨损，而在600 rpm速度下的磨损机理为磨料磨损。磨损和疲劳磨损。防腐蚀机理为Cl的隔离^-腐蚀和牺牲阳极的阴极保护。

创意/价值

本文主要研究了Al涂层的腐蚀磨损和电化学腐蚀性能。这项研究在此确认该手稿是原始作品，尚未出版，也未同时在其他地方提交。本文进一步证实，所有作者均已检查了手稿并同意投稿。