碳钢和高强钢在南海大气环境中的初期腐蚀行为研究
Initial Corrosion Behavior of Carbon Steel and High Strength Steel in South China Sea Atmosphere
王靖羽 1周学杰 2王洪伦 3吴军 2陈昊 2郑鹏华2
作者信息
- 1. 武汉材料保护研究所有限公司 武汉 430030
- 2. 武汉材料保护研究所有限公司 武汉 430030;武汉大气淡水环境材料腐蚀国家野外观测科学研究站 武汉 430030
- 3. 航天发射场可靠性技术重点实验室 海口 571126
- 折叠
摘要
通过在海南文昌地区大气腐蚀试验站进行的南海大气环境户外腐蚀试验,对比分析碳钢和3种高强钢腐蚀性能的优劣,为开发耐南海大气腐蚀用钢提供数据支撑和理论依据.分别选用Q235B、Q350EWR1、Q355和Q345NQR2等4种钢材作为研究对象,在南海大气环境中进行为期0.5和1 a的户外曝露腐蚀试验,通过试样宏观形貌观察、腐蚀失重分析和电化学分析等手段研究其腐蚀行为机制.4种试样表面均发生严重的均匀腐蚀,综合各项分析结果,4种钢材在南海海洋大气环境中的耐蚀性能排序为:Q355＞Q345NQR2＞Q235B＞Q350EWR1.
Abstract
The corrosion performance of carbon steel and three kinds of high-strength steels is com-paratively assessed via outdoor exposure in marine atmosphere of the South China Sea in a test site at Wenchang area of Hainan Province,which provides data support and theoretical basis for the develop-ment of steels resistant to atmospheric corrosion in the South China Sea.Four kinds of steel,Q235B,Q350EWR1,Q355 and Q345NQR2,were selected as the testing materials.Outdoor corrosion tests were carried out for half a year and one year respectively,and the tested steels was characterized by means of mass loss measurement,metallographic observation and electrochemical analysis.Serious uniform corro-sion occurred on the surface of the four steels.Based on the analysis results,the corrosion resistance of the four kinds of steels in the marine atmosphere of the South China Sea is ranked as the following se-quence:Q355＞Q345NQR2＞Q235B＞Q350EWR1.
关键词
南海/海洋大气环境/大气腐蚀试验/高强钢/电化学测试Key words
South China Sea/marine atmospheric environment/atmospheric corrosion test/high strength steel/electrochemical test引用本文复制引用
基金项目
科技基础资源调查专项(2021FY100600)
出版年
2024
NETL
NSTL
维普
万方数据