基于丝束电极技术的电偶腐蚀研究进展  

Research Progress on Galvanic Corrosion Based on the Wire Beam Electrode Technique

作　　者：寇杰 马东旭 郑勇 KOU Jie;MA Dongxu;ZHENG Yong(College of Pipeline and Civil Engineering,China University of Petroleum,Qingdao 266580,Shandong,China;Offshore Oil Engineering Co.,Ltd.,Tianjin 300451,China;Engineering Technology Management Center of Sinopec Shengli Oilfield Company,Dongying 257000,Shandong,China)

机构地区：[1]中国石油大学储运与建筑工程学院,山东青岛266580 [2]海洋石油工程股份有限公司,天津300451 [3]中石化胜利油田分公司工程技术管理中心,山东东营257000

出　　处：《材料导报》2023年第23期156-164,共9页Materials Reports

基　　金：国家自然科学基金(520004323)。

摘　　要：电偶腐蚀是各类金属结构中广泛存在且危害性极强的一种局部腐蚀,严重影响设备的安全可靠性。因此,研究电偶腐蚀行为及其相关影响因素的作用机理,可以为多金属设备的选材和电偶腐蚀的防护工作提供理论依据。近年来,丝束电极(Wire beam electrode, WBE)技术作为一门新兴的材料表面腐蚀测试技术得到迅速发展,在局部腐蚀的研究中优势显著。本文从三个方面重点总结了WBE技术应用于电偶腐蚀领域的研究现状,首先是探究温度等各类因素对电偶腐蚀的影响;对于海洋等环境下存在的电偶腐蚀行为,阐述WBE技术用于研究腐蚀演化过程和极性逆转的相关进展;另外,针对目前报道较少且广泛存在的多金属复杂偶合体系电偶腐蚀,WBE可以灵活组成偶对进行实验模拟,逐渐受到相关研究学者的青睐。最后总结电偶腐蚀领域亟待解决的科学问题,包括多金属复杂偶合体系腐蚀行为的研究、深海等特殊环境下电偶腐蚀的研究、某些外部因素变化导致电偶对发生极性逆转的微观机理、腐蚀预测模型的建立。Galvanic corrosion is one type of local corrosion that widely exists in all sorts of metal structures and causes significant damage,jeopardizing the dependability and safety of equipment.Therefore,selecting the right materials for polymetallic equipment and preventing galvanic corrosion can be theoretically supported by research into the behavior of galvanic corrosion and the mechanisms of various influencing factors.As an innovative corrosion electrochemical surface testing instrument,the wire beam electrode(WBE)has developed quickly in recent years and offers significant benefits in the investigation of local corrosion.On this basis,three aspects of WBE technical research on the field of galvanic corrosion are examined.First,explore the influence of various factors such as temperature on galvanic corrosion;the progress of the WBE technique in the study of corrosion evolution processes and polarity reversal for galvanic corrosion behavior in marine and other special environments.In addition,aiming at the galvanic corrosion of multi-metal complex coupling systems that are seldom reported but widely exist,WBE has gradually gained favor among relevant researchers because of its ability to flexibly compose coupling pairs for experimental simulation.Finally,the scientific problems to be solved in the field of galvanic corrosion are summarized,including the research on the corrosion behavior of complex coupling systems of multiple metals;the micro-mechanics of polarity reversal caused by changes in external variables;and the development of corrosion prediction models.

关 键 词：丝束电极 电偶腐蚀 电偶电流 偶合体系 极性逆转 电化学方法 

分 类 号：TB304[一般工业技术—材料科学与工程] TE989.8[石油与天然气工程—石油机械设备]