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首页> 外文期刊>Engineering failure analysis >Corrosion behavior of API-5L-X42 petroleum/natural gas pipeline steel in South China Sea and Strait of Melaka seawaters
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Corrosion behavior of API-5L-X42 petroleum/natural gas pipeline steel in South China Sea and Strait of Melaka seawaters

机译：南海南海和海滩海滩海滩海洋海滩海洋海滩海滩海河海河海河海滩海滩腐蚀行为

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摘要

This work aims to investigate the corrosion effect of different seawaters surrounding Peninsular Malaysia on the carbon steel of the petroleum/natural gas pipeline. The Tafel extrapolation technique has been applied to evaluate the corrosion rate of the pipeline steel and different locations of natural seawaters have been used as the electrolyte solution. In this experiment, carbon steel pipeline, API-5L-X42 was utilized as the sample and the seawaters were taken from several locations in Peninsular Malaysia, specifically at the South China Sea (Terengganu, Kelantan, Pahang) and the Strait of Melaka (Melaka, Johor, Negeri Sembilan). The corrosion rate calculation and the type of corrosion attack also have been discussed on the basis of the mor-phology and the metal contents of the seawaters. It was found that the corrosion rate of the carbon steel is relatively higher in the Strait of Melaka seawaters than that of the South China Sea seawaters. The corrosion rate results varied from 0.01 to 0.024 mm/year. Immersion test were carried out to examine the corrosion product formed on the surface of the pipe and from the result, localized corrosion (pitting) and uniform corrosion occurred at the specimen's surface severely for both seawater electrolytes. In summary, South China Sea is more favorable en-vironment for the application of this type of pipeline steel compared to that of Strait of Melaka.
机译：这项工作旨在探讨不同海水周围的半岛马来西亚对石油/天然气管道碳钢周围的腐蚀效果。已经应用Tafel外推技术来评估管道钢的腐蚀速率，并用作电解质溶液的不同地点。在该实验中，碳钢管道，API-5L-X42被用作样品，海洋水域被从半岛马来西亚的几个地点取出，特别是在南海（滕本武，Kelantan，Pahang）和Melaka海峡（Melaka ，柔佛州，内斯米林兰）。腐蚀速率计算和腐蚀攻击的类型也已经基于Mor-Photology和海洋水域的金属含量讨论。发现碳钢的腐蚀速率比南海海水的海岸海河海河海河海河的海岸相对较高。腐蚀速率结果从0.01〜0.024毫米/年变化。进行浸渍试验以检查管道表面上形成的腐蚀产物，从结果，局部腐蚀（点蚀）和均匀的腐蚀发生在样品的表面上，对海水电解质严重发生。总之，南海海洋对这种类型的管道钢的应用更有利，与马六甲海峡相比。

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