Study on corrosion behavior of typical carbon steel and low alloy steel in deep sea of different sea areas

IF 2.7 4区 材料科学 Q3 ELECTROCHEMISTRY
Kangkang Ding, Wenhua Cheng, Penghui Zhang, Weimin Guo, Lin Fan, Likun Xu, Jian Hou
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引用次数: 0

Abstract

Abstract In order to meet the development needs of deep-sea oil and gas resources, deep-sea corrosion coupon tests were carried out in the South China Sea, the Western Pacific Ocean, and the Indian Ocean, which can provide a strong guarantee for the rationality of material selection of oil and gas pipelines, platforms and other facilities. In-depth studies were conducted on the environmental adaptability of typical carbon steel and low alloy steel materials after exposure for one year in the deep-sea environment of different sea areas. The main environmental factors affecting deep-sea corrosion behavior were also collected and analyzed. The results showed that the corrosion morphology of carbon steel and low alloy steel in deep sea environment was more uniform than that in the shallow seawater. With the increase of seawater depth, the evolution law of their corrosion rates in different sea areas was similar, with an obvious decline of corrosion rate in the beginning. The gray correlation results indicated that it was mainly controlled by temperature and dissolved oxygen. The high hydrostatic pressure had limited effect on accelerating the deep sea corrosion rate of carbon steel and low alloy steel, but it promoted the formation of more uniform corrosion morphology.
典型碳钢和低合金钢在不同海域深海中的腐蚀行为研究
摘要为适应深海油气资源开发需要,在南海、西太平洋、印度洋等地开展了深海腐蚀试验,为油气管道、平台等设施选材的合理性提供有力保障。对典型碳钢和低合金钢材料在不同海域深海环境中暴露一年后的环境适应性进行了深入研究。收集并分析了影响深海腐蚀行为的主要环境因素。结果表明:碳钢和低合金钢在深海环境中的腐蚀形貌比在浅海环境中的腐蚀形貌更为均匀;随着海水深度的增加,其腐蚀速率在不同海域的演变规律相似,开始时腐蚀速率明显下降。灰色关联度分析结果表明,温度和溶解氧是主要的控制因素。高静水压力对加速碳钢和低合金钢深海腐蚀速率的作用有限,但能促进腐蚀形貌的形成。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Corrosion Reviews
Corrosion Reviews 工程技术-材料科学:膜
CiteScore
5.20
自引率
3.10%
发文量
44
审稿时长
4.5 months
期刊介绍: Corrosion Reviews is an international bimonthly journal devoted to critical reviews and, to a lesser extent, outstanding original articles that are key to advancing the understanding and application of corrosion science and engineering in the service of society. Papers may be of a theoretical, experimental or practical nature, provided that they make a significant contribution to knowledge in the field.
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