Q235钢和N80钢在不同腐蚀环境中的腐蚀行为
任颖惠 , 海茹鹰 , 杨智坤 , 刘展 , 白甜甜 , 周宇昇
延安大学学报(自然科学版) ›› 2026, Vol. 45 ›› Issue (01) : 30 -37.
Q235钢和N80钢在不同腐蚀环境中的腐蚀行为
The corrosion behavior of Q235 steel and N80 steel in different corrosive environments
为研究Q235钢和N80钢在油田典型腐蚀环境(近酸性采出水、近中性NaCl溶液、弱碱性自来水)中的腐蚀行为差异,为材料选型与防护方案提供依据,通过腐蚀失重实验、电化学极化曲线和阻抗谱研究了两种钢材的腐蚀机理与性能差异。腐蚀失重结果表明,Q235钢和N80钢均在近酸性采出水中腐蚀速率较高,而N80钢因含Cr、Ni等合金元素表现出更优耐蚀性。电化学结果表明,N80钢的自腐蚀电位比Q235钢更正,电荷转移电阻更高。在酸性、高Cl⁻油田采出水环境中,N80钢更适合作为结构材料,但仍需采取防护措施,其中涂层保护和表面改性是两种有效的防腐措施。此外,环境控制和使用缓蚀剂也是重要的防腐策略。
To study the differences in the corrosion behavior of Q235 steel and N80 steel in typical oilfield corrosive environments (near-acid produced water, near-neutral NaCl solution, and weakly alkaline tap water), so as to provide a basis for material selection and corrosion prevention measures, corrosion weight loss experiments were conducted. This study systematically investigates the corrosion mechanisms and performance disparities between the two steels through corrosion weight-loss experiments, combined with electrochemical polarization curve and impedance spectroscopy analyzes to characterize electrochemical corrosion behavior, supplemented by corrosion morphology observations. The results of the corrosion weight loss experiments showed that the corrosion rate of Q235 steel and N80 steel was relatively high in the near-acid produced water, and N80 steel, due to the presence of alloying elements such as Cr and Ni, exhibited better corrosion resistance. The electrochemical results indicated that the self-corrosion potential of N80 steel was more positive than that of Q235 steel, and the charge transfer resistance was higher. Therefore, in acidic and high Cl⁻ oilfield environments, N80 steel is more suitable as a structural material, but still requires protection. Coating protection and surface modification are two effective corrosion prevention measures. In addition, environmental control and the use of corrosion inhibitors are also important corrosion prevention strategies.
| [1] |
邓绍云,邱清华. 我国钢材生物腐蚀研究现状与展望[J]. 表面技术,2019,48(8):239-246. |
| [2] |
孙啸. N80油套管钢腐蚀规律的实验研究及分析[J]. 天然气与石油,2008,26(4):27-29. |
| [3] |
杨轶轩,阳晋,张威, |
| [4] |
朱旺,李艳辉,王琪博, |
| [5] |
韩霞,杨军,王子明, |
| [6] |
秦术杰,王欣,曹宝珠, |
| [7] |
苏强. 油气管道腐蚀与防护技术研究[J]. 石化技术,2024,31(12):193-195. |
| [8] |
郑鑫. 油田集输管道腐蚀原因分析及防腐蚀技术研究[J]. 石油和化工设备,2024,27(11):204-206+203. |
| [9] |
邸春雨,崔国森. 浅析油气管道腐蚀原因及影响因素[J]. 石化技术,2024,31(7):69-71. |
| [10] |
李洋,孙寿民,廖锐全. 环境因素对N80钢在模拟油田采出液中腐蚀行为的影响[J]. 热加工工艺,2023,52(24):72-76. |
| [11] |
杨涛,许磊,王建春, |
| [12] |
李玉星,刘兴豪,王财林, |
| [13] |
谢春霞. 埋地Q235天然气管道外壁腐蚀穿孔特性研究[D]. 贵阳:贵州大学,2024. |
| [14] |
周龙,鲁骏,丁文珊, |
| [15] |
李晓亮. 油田集输管道腐蚀分析与防腐技术研究[J]. 中国设备工程,2024(8):202-204. |
| [16] |
陈洁净,鞠虹,孙灿, |
| [17] |
胥聪敏. 复配杀菌缓蚀剂对N80钢在SRB环境中微生物腐蚀行为的影响[J]. 材料研究学报,2025,39(2):145-154. |
| [18] |
储宵宵,王珍珍,王伟, |
| [19] |
王鹏杰,宋昱灏,樊林, |
| [20] |
API RP 14E:2018,Recommended Practice for Design and Installation of Offshore Production Platform Piping Systems (5th Ed.) [S],华盛顿:美国石油学会,2018. |
陕西省大学生创新训练计划项目(D2023128)
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