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

作　　者：王靖羽 周学杰 王洪伦 吴军 陈昊 郑鹏华 WANG Jingyu;ZHOU Xuejie;WANG Honglun;WU Jun;CHEN Hao;ZHENG Penghua(Wuhan Research Institute of Materials Protection,Wuhan 430030,China;Wuhan Materials Corrosion National Obserbation and Research Station,Wuhan 430030,China;Key Laboratory of Space Launching Site Reliability Technology,Haikou 571126,China)

机构地区：[1]武汉材料保护研究所有限公司,武汉430030 [2]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

出　　处：《中国腐蚀与防护学报》2024年第1期237-245,共9页Journal of Chinese Society For Corrosion and Protection

基　　金：科技基础资源调查专项(2021FY100600)。

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。The corrosion performance of carbon steel and three kinds of high-strength steels is comparatively 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 development 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 corrosion 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 sequence: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 

分 类 号：TG174[金属学及工艺—金属表面处理]