CAJ | 학술논문

对丁二烯蒸出塔腐蚀部位几种材质的化学成分、硬度、母材及焊缝金相组织、腐蚀产物的成分、腐蚀区横断面形貌和腐蚀环境进行了分析，认为塔体支撑圈焊接区的腐蚀属于缝隙腐蚀。并对缝隙腐蚀的机理和影响因素进行了分析，提出今后改进该塔缝隙腐蚀的具体措施。
대정이희증출탑부식부위궤충재질적화학성분、경도、모재급한봉금상조직、부식산물적성분、부식구횡단면형모화부식배경진행료분석，인위탑체지탱권한접구적부식속우봉극부식。병대봉극부식적궤리화영향인소진행료분석，제출금후개진해탑봉극부식적구체조시。
The chemical composition and hardness of several material,metallographic structure of base metal and welding joint,composition of corrosion product,cross-section shape and corrosion enviroment at corrosion area of butadiene column are analized.The corrosion at welding area of column supporting ring is crevice corrosion.The mehcanisum of crevice corrosion and influential factors are analized.The protection of crevice corrosion in that column is given.