敏化处理304不锈钢局部腐蚀行为的扫描微电极法研究

叶陈清; 胡融刚; 侯瑞青; 王小平; 杜荣归; 林昌健

doi:10.13208/j.electrochem.130217

电化学 >

2013 , Vol. 19 >Issue 6: 507 - 511

DOI: https://doi.org/10.13208/j.electrochem.130217

研究论文

敏化处理304不锈钢局部腐蚀行为的扫描微电极法研究

叶陈清 ,
胡融刚 ,
侯瑞青 ,
王小平 ,
杜荣归 ,
林昌健

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1. 厦门大学固体表面物理化学国家重点实验室，化学化工学院化学系，福建厦门 361005；2. 宁德师范学院化学与环境科学系，福建宁德352100；3. 贵阳学院化学与材料工程学院，贵州贵阳 550005

收稿日期: 2013-01-31

修回日期: 2013-03-28

网络出版日期: 2013-04-05

基金资助

国家自然科学基金项目(No. 21021002)资助

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Localized Corrosion Behavior of Sensitized 304 Stainless Steel by Scanning Reference Electrode Technique

YE Chen-Qing ,
HU Rong-Gang ,
HOU Rui-Qing ,
WANG Xiao-Ping ,
DU Rong-Gui ,
LIN Chang-Jian

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1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China; 2. Department of Chemistry and Environmental Science, Ningde Normal University, Ningde 352100, Fujian, China; 3. College of Chemistry and Materials Engineering, Guiyang University, Guiyang 550005, Guizhou, China

Received date: 2013-01-31

Revised date: 2013-03-28

Online published: 2013-04-05

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摘要

通过扫描微电极法研究敏化处理奥氏体不锈钢(304ss)的局部腐蚀行为，并结合传统电化学方法及光学显微镜进行测试观察. 结果表明，在10% FeCl3溶液未敏化处理(304ss-NS)或550 oC轻度敏化处理(304ss-S1)的不锈钢倾向于发生点腐蚀，而650 oC(304ss-S2)或750 oC(304ss-S3)深度敏化处理不锈钢则倾向于发生晶间腐蚀.

关键词： 304不锈钢; 敏化处理; 扫描微电极技术; 局部腐蚀; 晶间腐蚀

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叶陈清 , 胡融刚 , 侯瑞青 , 王小平 , 杜荣归 , 林昌健 . 敏化处理304不锈钢局部腐蚀行为的扫描微电极法研究[J]. 电化学, 2013 , 19(6) : 507 -511 . DOI: 10.13208/j.electrochem.130217

Abstract

Based on a home-built setup of scanning reference electrode technique, and combined with conventional electrochemical measurements, the localized corrosion behavior of sensitized 304 stainless steel (304ss) had been investigated in this work. The results showed that, the non-sensitized 304ss or 304ss sensitized at 550 oC was susceptible to pitting; while 304ss sensitized at 650 oC or 750 oC suffered severe intergranular corrosion in 10% FeCl3 solution.

Key words： 304 stainless steel; sensitization; SRET; localized corrosion; intergranular corrosion

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