[1]方 帅,闫凤霞,张骁勇.剥离涂层下X90管线钢在近中性pH值模拟溶液中的电化学腐蚀行为[J].焊管,2019,42(3):12-15,22.[doi:10.19291/j.cnki.1001-3938.2019.3.003]
 FANG Shuai,YAN Fengxia,ZHANG Xiaoyong.Electrochemical Corrosion Behavior of X90 Pipeline Steel in Near-neutral pH Simulated Solution Under Peeling Coating[J].,2019,42(3):12-15,22.[doi:10.19291/j.cnki.1001-3938.2019.3.003]
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剥离涂层下X90管线钢在近中性pH值
模拟溶液中的电化学腐蚀行为
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第3期
页码:
12-15,22
栏目:
试验与研究
出版日期:
2019-03-28

文章信息/Info

Title:
Electrochemical Corrosion Behavior of X90 Pipeline Steel in Near-neutral pH
Simulated Solution Under Peeling Coating
文章编号:
10.19291/j.cnki.1001-3938.2019.3.003
作者:
方 帅1闫凤霞2张骁勇1
1. 西安石油大学 材料科学与工程学院, 西安710065;
2. 西安石油大学 石油工程学院, 西安 710065
Author(s):
FANG Shuai1 YAN Fengxia2 ZHANG Xiaoyong1
1. College of Material Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China;
2. College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
关键词:
X90管线钢近中性土壤溶液涂层剥离电化学腐蚀
Keywords:
X90 pipeline steelnear-neutral pH soil solutionpeeling coatingelectrochemical corrosion behavior
分类号:
TG174
DOI:
10.19291/j.cnki.1001-3938.2019.3.003
文献标志码:
A
摘要:
为了分析X90管线钢在近中性pH值土壤环境中的腐蚀行为,模拟古浪地区土壤溶液,采用剥离缝隙试验装置,对距离试样剥离口不同位置的电化学腐蚀行为进行了研究。结果表明,X90管线钢在近中性pH值模拟溶液中的腐蚀速率随试样与剥离口之间距离的增加而先减小后增大,即试样在剥离口及距离剥离口最远处腐蚀最为严重;腐蚀形貌特征在剥离口及其附近表现为明显的点蚀,距离增大后腐蚀形貌特征转为腐蚀程度较大的均匀腐蚀。
Abstract:
In order to analyze the corrosion behavior of X90 pipeline steel in near-neutral pH simulated soil solution, simulating gulang region soil solution, electrochemical corrosion behavior at different locations from the peeling port of the sample was studied with peeling gap test equipment. The results indicated that the corrosion rate of X90 pipeline steel in the simulated solution with near-neutral pH value first decreased first and then increased with the increase of the distance between the sample and the peeling port, the most severe corrosion occurred at the peeling port and the location furthest from the peeling port; the corrosion morphology showed obvious pitting corrosion at and near the peeling port, and it changed to uniform corrosion with larger corrosion degree after the distance of  peeling port increased.

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备注/Memo

备注/Memo:
收稿日期:2018-11-28
基金项目: 国家自然科学基金“油气输送管线钢在线碳配分机理、复相结构特征及塑性增长规律研究”(项目编号51174165);陕西省自然科学基础研究项目“高钢级管线钢摩擦焊焊接接头形成机理研究”(项目编号2018JM5076)。
作者简介:方  帅(1988—),男,硕士研究生,研究方向为材料腐蚀与防护。
更新日期/Last Update: 2019-04-19