2205双相不锈钢在含溴醋酸环境中的腐蚀行为
Corrosion Behavior of 2205 Duplex Stainless Steel in Acetic Acid Environment Containing Br
摘 要
通过化学浸泡法，结合彩色金相技术，采用腐蚀失重试验、扫描电镜原位分析、能谱分析等，对2205双相不锈钢（2205DSS）在含溴醋酸环境中的腐蚀行为进行研究。结果表明：在含溴的醋酸环境中，2205双相不锈钢发生了奥氏体的选择性腐蚀。2205 DSS的腐蚀速率随着温度和Br-量的增加而增加，随着浸泡时间的延长而减小。
溴离子
醋酸
选择性腐蚀
duplex stainless steel (DSS)
bromine ion
acetic acid
selective corrosion
Abstract
Corrosion behavior of 2205 duplex stainless steel (2205 DSS) in a bromine-containing acetic acid environment was studied by chemical immersion method, combined with color metallographic technology, corrosion weight loss test, scanning electron microscopy in-situ analysis, and energy spectrum analysis. The results show that the selective corrosion of austenite occurred in 2205 DSS in the bromine-containing acetic acid environment. The corrosion rate of 2205 DSS increased with increasing temperature and Br- amount, and decreased with increasing immersion time.
中图分类号 TG174 DOI 10.11973/fsyfh-202003006
所属栏目 试验研究
基金项目 国家自然科学基金（51505477）
收稿日期 2018/6/13
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引用该论文: CEN Weiwei,JIANG Yong,CHEN Jiadong,TAO Ping,GONG Jianming. Corrosion Behavior of 2205 Duplex Stainless Steel in Acetic Acid Environment Containing Br[J]. Corrosion & Protection, 2020, 41(3): 32
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参考文献
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【2】MOTESHAKKER A,DANAEE I. Microstructure and corrosion resistance of dissimilar weld-joints between duplex stainless steel 2205 and austenitic stainless steel 316L[J]. Journal of Materials Science & Technology,2016,32(3):282-290.
【3】宋以堃. FV520B不锈钢在溴醋酸溶液中高温电化学腐蚀研究[D]. 大连:大连理工大学,2017.
【4】FENG M,GONG M,ZHANG Y,et al. Effect of temperature on cathodic reaction of 2205 duplex stainless steel corrosion in brine[J]. Corrosion & Protection,2011.
【5】JIN S,LIU C,LIN X,et al. Effect of inorganic anions on the corrosion behavior of UNS S32750 duplex stainless steel in chloride solution[J]. Materials & Corrosion,2015,66(10):1077-1083.
【6】付燕,林昌健,蔡文达. 微电化学技术研究双相不锈钢优选腐蚀行为[J]. 金属学报,2005,41(3):302-306.
【7】FOURIE J W,ROBINSON F P A. Evaluation of selective corrosion in UNS S31803 duplex stainless steel with electrochemical impedance spectroscopy[J]. Electrochimica Acta,2006,51(8):1842-1846.
【8】付燕,林昌健,罗亦旋,等. 双相不锈钢在含硝酸体系中的优先腐蚀行为研究[J]. 中国腐蚀与防护学报,2004,24(5):272-275.
【9】MERELLO R,BOTANA F J,BOTELLA J,et al. Determination of the weaker phase in the pitting corrosion of non-standard low-Ni high-Mn-N duplex stainless steels[J]. Materials & Corrosion,2004,55(2):95-101.
【10】贾书玉,郑继功. 0Cr18Ni9钢乙酸罐选择性腐蚀原因分析[J]. 企业技术开发,2012,31(16):33-34.
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