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L360M钢在饱和CO2环境中的腐蚀行为及主控因素探究

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  • (西南石油大学石油与天然气工程学院, 四川 成都 610000)
缑静钰(1998-),硕士,研究方向为油气安全工程,电话:13991688497,E-mail:13991688497@163.com

收稿日期: 2023-04-03

  修回日期: 2023-05-15

  录用日期: 2023-05-25

  网络出版日期: 2024-08-16

Study on Corrosion Behavior and Main Control Factors of L360M Steel in Saturated CO2 Environment

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  • (Southwest Petroleum University, School of Petroleum and Natural Gas Engineering, Chengdu 610000, China)


GOU Jingyu (1998-), Master, Research Focus: Oil and Gas Safety Engineering, Tel.: 13991688497, E-mail:13991688497@163.com

Received date: 2023-04-03

  Revised date: 2023-05-15

  Accepted date: 2023-05-25

  Online published: 2024-08-16

摘要

为研究温度、Cl浓度及流速对L360M 管线钢在饱和CO2环境中的腐蚀行为的影响,采用室内挂片失重试验设计正交实验方案,通过集热式磁力搅拌器进行动态模拟试验,并根据正交实验结果选取主控因素进行单因素实验并开展电化学实验。 结果表明:各因素对L360M 管线钢在饱和CO2环境中的腐蚀速率的影响按大小排序如下:温度>Cl浓度>流速。 随着温度的升高,腐蚀速率先增大后减小。 腐蚀产物膜对金属基体的保护作用与膜层的致密性、覆盖度、稳定性有关。

本文引用格式

蒋宏业, 缑静钰, 李又绿, 过思翰, 解正一 . L360M钢在饱和CO2环境中的腐蚀行为及主控因素探究[J]. 材料保护, 2024 , 57(7) : 85 -92 . DOI: 10.16577/j.issn.1001-1560.2024.0154

Abstract

In order to investigate the influence of temperature, Cl concentration and flow rate on the corrosion behavior of L360M pipeline steel in saturated CO2 environment, an orthogonal test scheme was designed using the indoor coupon weight loss test method.Meanwhile, dynamic simulation tests were conducted using a collector type magnetic stirrer.Based on the results of orthogonal experiments, the main control factor was selected for single factor experiments and conducting electrochemical experiments.Results showed that the degree of influence of each factor on the corrosion rate of L360M pipeline steel in saturated CO2 environment was in the order of temperature >Cl concentration >flow rate.The effect of temperature on corrosion rate first increased and then decreased.Besides, the protective effect of corrosion product film on the metal substrate was related to the density, coverage and stability of the film layer.

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