铸造技术2017，Vol.38Issue(8)：1805-1807,3.DOI:10.16410/j.issn1000-8365.2017.08.007
海洋大气环境下A709Gr345W耐候桥梁钢的耐候性研究
Study on Weathering Resistance of A709 Gr345W Bridge Steel
摘要
Abstract
The polarization curve tests and alternate wetting and drying corrsosion tests of A709 Gr345W weather-resistant steel and traditional Q345 steel were conducted in simulative ocean-atmosphere environment salt solution for comparison and analyses.The electrokinetic potential polarozation curves and corrosion rates under alternate wetting and drying condition were compared between the two type of steels.The results show that the atmospheric corrosion resistant index of A709 Gr345W steel is 6.3,conform to the requirements of the American A709 standards for building structural steel and G101 standards for resistance atmospheric corrosion of low alloy steel,and the weather resistance of A709 Gr345W steel is obviously better than that of Q345 steel.关键词
A709 Gr345W钢/耐候性/极化曲线/干湿交替试验Key words
A709 Gr345W steel/weather-resistance/polarization curve/alternate wetting and drying test分类
矿业与冶金引用本文复制引用
杨秀芝,华文林,杨春杰,董春法,俞敏..海洋大气环境下A709Gr345W耐候桥梁钢的耐候性研究[J].铸造技术,2017,38(8):1805-1807,3.基金项目
湖北省教育厅青年基金(Q.20123001)、湖北省自然科学基金(2014CFB177)和湖北理工学院博士科研启动基金(11yjz01R)资助 （Q.20123001）
