Crevice Corrosion of Several Supper Stainless Steels in the Simulated LT-MED Environment

• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2018,（11）
• 页码范围: 1137-1147
• 页数: 11页
• 语种: 英文

摘要

Susceptibility and morphological characteristics of crevice corrosion for SS316,SS904L,SS254sMo and SS2507 in the simulated low-temperature multi-effect distillation environment were investigated by cyclic polarization test,scanning electron microscope and laser microscope.The results show that the crevice corrosion resistance of four kinds of stainless steel is ranked as SS254sMo ≈ SS2507 ＞ SS316 ＞ SS904L.There are "cover" structures over the edge of active crevice corrosion regions of SS904L,SS254sMo and SS2507,but SS316 is an exception.Galvanic corrosion characteristics appeared in the crevice of duplex supper stainless steel SS2507.