Corrosion evolution of 2205 duplex stainless steel in hot concentrated seawater under intermittent vacuum and boiling conditions

被引：13

作者：

Yang, Yong ^{[1
]}

Liu, Lele ^{[1
]}

Bi, Hongyun ^{[2
]}

Zeng, Hongtao ^{[1
]}

Hou, Xueling ^{[1
]}

Li, Moucheng ^{[1
]}

机构：

[1] Shanghai Univ, Sch Mat Sci & Engn, Inst Mat, 149 Yanchang Rd, Shanghai 200072, Peoples R China

[2] Baoshan Iron & Steel Co Ltd, Res Inst, Shanghai 200431, Peoples R China

来源：

CORROSION SCIENCE | 2021年 / 193卷 / 193期

基金：

中国国家自然科学基金;

关键词：

Duplex stainless steel; EIS; Intermittent vacuum; Pitting corrosion; Hot concentrated seawater; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; PITTING TEMPERATURE CPT; DISSOLVED-OXYGEN; CHLORIDE CONCENTRATION; PASSIVATION BEHAVIOR; LOCALIZED CORROSION; CAVITATION EROSION; ALKALINE-SOLUTIONS; CARBON-STEEL; DIFFERENT PH;

D O I：

10.1016/j.corsci.2021.109881

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Long-term corrosion behavior of 2205 duplex stainless steel was investigated in the hot concentrated artificial seawater under intermittent vacuum boiling and atmosphere conditions during the immersion of more than one year by using electrochemical impedance spectroscopy (EIS). Compared to the atmosphere state, the passive film formed on specimen surface is thinner and the induction time for pitting corrosion decreases notably under intermittent vacuum boiling condition. However, the pit propagation is retarded by the lower dissolved oxygen content and violent boiling of solution. The vacuum boiling of solution has opposite effect on the initiation and stable growth processes of pitting corrosion.

引用

页数：11

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