Research on corrosion behavior of 16MnR steel and its welded joints in high-temperature naphthenic acid solution

摘要：

For corrosion behavior of 16MnR steel and its welded joints in high-temperature naphthenic acid solution,experimental tests and microstructure observations were conducted. A special experimental device for static high-temperature naphthenic acid corrosion (HNAC) was designed and built. Multi-group immersion corrosion tests were carded out under two conditions,one condition of constant total acid number (TAN) and varying temperatures and the other condition of constant temperature and varying TAN. A database of corrosion rates of 16MrtR steel in high-temperature naphthenic acid solution was initially established. The variation law of corrosion behavior of 16MnR steel and its welded joints in high-temperature naphthenic acid solution was revealed. Field emission scanning electron microscope (FESEM) and energy dispersive X-ray (EDX) was used in corrosion morphology observation of corroded specimens. Results show that,the annual average corrosion rate of 16MnR steel in high-temperature naphthenic acid solution was quite great and corrosion resistance of welded joints was generally worse than base metal.

关键词： High-temperature naphthenic acid Static corrosion test Low alloy steel Welded joints

作者: Jiapei Cao Guowei Cao Zhou Fang Yuanyuan Duan Zhiping Chen Xuedong Chen

作者单位: Institute of Chemical Process Machinery,Zhejiang University,Hangzhou 310027,China Hefei General Machinery Research Institute and National Safety Engineering Technology Research Cente

会议类型: 国际会议

会议名称: Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)

会议地点: 杭州

会议语种:英文

页码: 365-370

在线出版日期: 2008-10-31（万方平台首次上网日期，不代表论文的发表时间）