Corrosion behavior of 1Cr18Ni9Ti stainless steel in decontamination system of acidic permanganate solution

WEI Wei1 GONG Min1 ZHANG Peng1 ZHANG Yu1 HUANG Wenheng1 KANG Wu2 ZHANG Dong2 TAN Zhaoyi2 1

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Corrosion behavior of 1Cr18Ni9Ti stainless steel in decontamination system of acidic permanganate solution

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- Corrosion behavior of 1Cr18Ni9Ti stainless steel in decontamination system of acidic permanganate solution
- NUCLEAR TECHNIQUES Vol. 33, Issue 4, (2010)
- 作者机构：
  
  1. 四川理工学院
  2. 中国工程物理研究院核物理与化学研究所
- 作者简介：
- 基金信息：
  
  四川省教育厅项目(No.08ZA084);中国工程物理研究院核物理与化学研究所项目(No.lg2008-21)资助
- DOI：
  CLC： TL944
- Published：01 April 2010
- 稿件说明：
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[1]魏巍,龚敏,张朋,张豫,黄文恒,亢武,张东,谭昭怡.1Cr18Ni9Ti钢在酸性高锰酸钾去污体系中的腐蚀行为研究[J].核技术,2010,33(04):316-320.

WEI Wei1 GONG Min1 ZHANG Peng1 ZHANG Yu1 HUANG Wenheng1 KANG Wu2 ZHANG Dong2 TAN Zhaoyi2 1. Corrosion behavior of 1Cr18Ni9Ti stainless steel in decontamination system of acidic permanganate solution[J]. Nuclear techniques, 2010, 33(4): 316-320.
[1]魏巍,龚敏,张朋,张豫,黄文恒,亢武,张东,谭昭怡.1Cr18Ni9Ti钢在酸性高锰酸钾去污体系中的腐蚀行为研究[J].核技术,2010,33(04):316-320. DOI：

WEI Wei1 GONG Min1 ZHANG Peng1 ZHANG Yu1 HUANG Wenheng1 KANG Wu2 ZHANG Dong2 TAN Zhaoyi2 1. Corrosion behavior of 1Cr18Ni9Ti stainless steel in decontamination system of acidic permanganate solution[J]. Nuclear techniques, 2010, 33(4): 316-320. DOI：

摘要

采用失重法、金相观察、电子扫描探针观测、电化学阻抗图谱测试等方法

研究了1Cr18Ni9Ti钢在不同浓度KMnO4+10%HNO3清洗条件下的腐蚀行为。结果表明

1Cr18Ni9Ti钢在该体系中发生晶间腐蚀

表面粗糙度增大

且随着KMnO4浓度的提高

腐蚀速度上升。当KMnO4浓度在0.5%时

腐蚀速度近80nm/h

并发现电荷传递电阻下降

金属耐蚀性降低

晶间电阻减小

晶间腐蚀加剧

界面电容提高

金属表面形貌均匀性下降等现象。

Abstract

With weight loss method

metallurgical observation

SPM and EIS

the corrosion behavior of 1Cr18Ni9Ti steel in washing condition with different concentrations KMnO4 +10% HNO3 solution was studied. The results showed that 1Cr18Ni9Ti steel in the system occurred intergranular corrosion

and the surface roughness increased. Meanwhile

with the increase of the concentration of KMnO4

the corrosion rate rose. When the KMnO4 concentration was 0.5%

the corrosion rate was about 80 nm/h

and following phenomena were observed: the charge transfer resistance decreased

the metal corrosion resistance and the intergranular resistance reduced

the intergranular corrosion intensified

the interface capacitance increased

and the uniformity of metal surface topography decreased.

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