Le Chen, Yanxia Du, Yi Liang, Nianpei Tian, Zhenhong Zhu, Lei Zhang
{"title":"X65管线钢阴极保护动态交流腐蚀行为研究","authors":"Le Chen, Yanxia Du, Yi Liang, Nianpei Tian, Zhenhong Zhu, Lei Zhang","doi":"10.5006/4240","DOIUrl":null,"url":null,"abstract":"An indoor corrosion simulation experiment device was built to explore the influence of dynamic AC interference on the corrosion behavior of pipeline steel under different cathodic protection (CP) levels. When the interference time in each interference cycle is 350 s, the dynamic AC corrosion rate was comparable to the steady AC corrosion rate. For JAC of 30 A·m-2, the corrosion rate of the specimen can be controlled below 0.0254 mm·y-1 when the CP current density is higher than 0.06 A·m-2. As JAC is greater than or equal to 100 A·m-2, with the increase of the cathodic protection current density, the corrosion rate of the specimens decreased firstly, then increased and decreased again. In this paper, the real-time AC/DC potential on the surface of the specimen is monitored, combined with Pourbaix diagram and the evolution of corrosion product film, the dynamic AC corrosion mechanism under different cathodic protection levels was explored.","PeriodicalId":10717,"journal":{"name":"Corrosion","volume":" ","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Research on dynamic AC corrosion behavior of X65 Pipeline Steel under cathodic protection\",\"authors\":\"Le Chen, Yanxia Du, Yi Liang, Nianpei Tian, Zhenhong Zhu, Lei Zhang\",\"doi\":\"10.5006/4240\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An indoor corrosion simulation experiment device was built to explore the influence of dynamic AC interference on the corrosion behavior of pipeline steel under different cathodic protection (CP) levels. When the interference time in each interference cycle is 350 s, the dynamic AC corrosion rate was comparable to the steady AC corrosion rate. For JAC of 30 A·m-2, the corrosion rate of the specimen can be controlled below 0.0254 mm·y-1 when the CP current density is higher than 0.06 A·m-2. As JAC is greater than or equal to 100 A·m-2, with the increase of the cathodic protection current density, the corrosion rate of the specimens decreased firstly, then increased and decreased again. In this paper, the real-time AC/DC potential on the surface of the specimen is monitored, combined with Pourbaix diagram and the evolution of corrosion product film, the dynamic AC corrosion mechanism under different cathodic protection levels was explored.\",\"PeriodicalId\":10717,\"journal\":{\"name\":\"Corrosion\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-03-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Corrosion\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.5006/4240\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.5006/4240","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Research on dynamic AC corrosion behavior of X65 Pipeline Steel under cathodic protection
An indoor corrosion simulation experiment device was built to explore the influence of dynamic AC interference on the corrosion behavior of pipeline steel under different cathodic protection (CP) levels. When the interference time in each interference cycle is 350 s, the dynamic AC corrosion rate was comparable to the steady AC corrosion rate. For JAC of 30 A·m-2, the corrosion rate of the specimen can be controlled below 0.0254 mm·y-1 when the CP current density is higher than 0.06 A·m-2. As JAC is greater than or equal to 100 A·m-2, with the increase of the cathodic protection current density, the corrosion rate of the specimens decreased firstly, then increased and decreased again. In this paper, the real-time AC/DC potential on the surface of the specimen is monitored, combined with Pourbaix diagram and the evolution of corrosion product film, the dynamic AC corrosion mechanism under different cathodic protection levels was explored.
期刊介绍：
CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion.
70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities.
Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives:
• Contribute awareness of corrosion phenomena,
• Advance understanding of fundamental process, and/or
• Further the knowledge of techniques and practices used to reduce corrosion.
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