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[1]夏星帆*,高 飞,赵 匡,等.不同温度下CO2对管线钢母材/焊缝腐蚀行为研究[J].电镀与精饰,2023,(2):27-34.[doi:10.3969/j.issn.1001-3849.2023.02.005]
　Xia Xingfan*,Gao Fei,Zhao Kuang,et al.Study on CO 2 corrosion behavior of pipeline steel base metal/weld under different temperature[J].Plating & Finishing,2023,(2):27-34.[doi:10.3969/j.issn.1001-3849.2023.02.005]
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不同温度下CO2对管线钢母材/焊缝腐蚀行为研究

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG] 卷: 期数: 2023年2 页码: 27-34 栏目: 出版日期: 2023-02-15
Title:
Study on CO 2 corrosion behavior of pipeline steel base metal/weld under different temperature
作者:
（1.中国石油大学（华东） 石油工业训练中心，山东 青岛 266580； 2.青岛黄海学院，山东 青岛 266580； 3.青海油田采油一厂，青海 海西 817000）
Author(s):
（1. Oil Industry Training Centre， China University of Petroleum （East China）， Qingdao 266580， China； 2.Qingdao Huanghai University， Qingdao 266580， China； 3.No.1 Oil Production Plant of Qinghai Oilfield， Haixi 817000， China）
关键词:
CO 2 腐蚀; 集输管线; 电化学; 腐蚀行为
Keywords:
CO 2 corrosion ;  gathering pipeline ;  electrochemistry ;  corrosion behavior
分类号:
TG179
DOI:
10.3969/j.issn.1001-3849.2023.02.005
文献标志码:
A
摘要:
通过腐蚀实验和电化学实验研究了温度和 CO 2 协同作用对集输管道的腐蚀行为。结果表明：温度越高，时间越长，全面腐蚀速率和最大蚀坑深度越大，腐蚀形貌由全面腐蚀向点蚀转变。温度升高，开路电位和腐蚀电位负移，腐蚀电流密度增大，电荷转移电阻减小，最大相位角减小，表明腐蚀加剧，同时母材的耐蚀性优于焊缝。在温度为 40 ℃ 时，焊缝试样在低频出现第二个相位角峰值，说明在较高的温度条件下，焊缝腐蚀产物的扩散速率是关键影响因素。
Abstract:
： The corrosion behavior of gathering pipeline under the synergistic effect of temperature and CO 2 was studied by corrosion experiments and electrochemical experiments. The results showed that the overall corrosion rate and maximum pit depth increased with the increase of temperature and time ， and the corrosion morphology changed from general corrosion to pitting corrosion. With the increase of temperature ， the open-circuit potential and corrosion potential of the base metal and weld were negatively shifted ， the corrosion current density increased ， the charge-transfer resistance and the maximum phase angle decreased. The results indicated that the corrosion was aggravated and the corrosion resistance of the base metal was better than that of the weld. When the temperature reached 40 ℃ ， the second angle peak of the weld appeared at low frequency ， indicating that the diffusion rate of corrosion products on the weld surface was the key to affect the weld corrosion process at higher temperature.

参考文献/References:



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备注/Memo

收稿日期： 2021-04-01 修回日期： 2021-05-18 作者简介： 夏星帆（ 1987 —），男，硕士研究生，工程师， email ： xiaxingfan_pet@163.com?/html>

更新日期/Last Update: 2023-02-08