Corrosion Behavior of 304 Stainless Steel Exposed to a Simulated Salt Lake Atmosphere

• 作者: Chen Pan Miaoran Liu Mingxiao Guo Qi Yin Zhenyao Wang
• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2020,（6）
• 页码范围: 857-870
• 页数: 14页
• 语种: 英文

摘要

The corrosion behavior of stainless steel exposed to a simulated salt lake atmosphere has been investigated by analyzing the evolution of surface morphologies and corrosion products,the initiation and development of pits,and the electrochemical characteristics.The results indicated that (Mg6Fe2(OH)16(CO3)(H2O)4.5)0.25,a layered double hydroxide,has been detected for the first time in the corrosion products formed on stainless steel exposed to a simulated salt lake atmosphere.The specimens exposed to MgCl2 deposit conditions were corroded more severely than those exposed to NaCl deposit conditions,which was attributed to the differences in the deliquescence relative humidity and efflorescence relative humidity values of MgCl2 and NaCl.In addition,a special corrosion morphology consisting of a concentric circle of yellowish material was observed on the specimens exposed to MgCl2 deposit conditions,which was attributed to the formation of Mg(OH)2,inhibiting the diffusion and migration of OH-ions to the anode region.The maximum pit depth followed a power function with respect to corrosion time.The corrosion mechanism of stainless steel exposed to a simulated salt lake atmosphere is also discussed.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Mingxiao Guo	中国科学院金属研究所	1	0	0.0	0.0
2	Qi Yin	中国科学院金属研究所	1	0	0.0	0.0
3	Miaoran Liu	中国科学院金属研究所	1	0	0.0	0.0
4	Chen Pan	中国科学院金属研究所	1	0	0.0	0.0
5	Zhenyao Wang	中国科学院金属研究所	1	0	0.0	0.0