板式换热器不锈钢板片失效分析  

Failure Analysis of Stainless Steel Plates in Plate Heat Exchanger

作　　者：董雷云[1] 刘长军[1] 潘缉悌[1] 

机构地区：[1]华东理工大学,上海200237

出　　处：《化工设备与管道》2005年第6期50-52,共3页Process Equipment & Piping

摘　　要：利用光学显微镜、扫描电镜、电子能谱等测试手段，从材料成分、微观组织、断口形貌以及腐蚀产物成分等角度，分析了板式换热器 不锈钢板片穿孔泄漏的原因。结果表明，不锈钢板片失效的主要原因是氯离子引起的点腐蚀和缝隙腐蚀所致。By using optical microscope, SEM, electronic energy spectrum, the leakage of plates in plate steel heat exchanger was ana lyzed in material composition, microstructure, fracture surface, and composition of corrosion product. The results indicted that the failure of the stainless steel plates was mainly due to pitting corrosion and crevice corrosion induced by Cl^-.

关 键 词：板式换热器 不锈钢板片 失效分析 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TK172[金属学及工艺—金属材料]