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中国腐蚀与防护学报  2009, Vol. 29 Issue (3): 191-198    
  研究报告 本期目录 | 过刊浏览 |
两碱法对钛材在盐卤中腐蚀行为的影响
龚敏;蒋伟;邹振;陈建;梁刚
四川理工学院材料与化学工程系 自贡 643000
INFLUENCE OF TWO-ALKALI METHOD ON CORROSION BEHAVIOR FOR TITANIUM IN BITTERN SOLUTION
GONG Min; JIANG Wei; ZOU Zhen; CHEN Jian; LIANG Gang
College of Materials and Chemical Engineering; Sichuan University of Science and Engineering;Zigong  643000
全文: PDF(1507 KB)  
摘要: 

利用电化学方法、电化学阻抗谱以及失重实验法研究CO2-3浓度、pH值以及温度的改变对工业钛材在盐卤介质中的耐腐蚀性能的影响,探讨其电极反应过程,并借助金相显微镜观察失重腐蚀实验后的腐蚀形貌。结果表明,试样在盐卤水中的耐腐蚀性能随着CO32-浓度和pH值的增大递增,但随着温度的升高递减;随着浸泡时间的增长,试样的耐腐蚀性能先减弱、后增大,当浸泡时间为7 d时,年腐蚀深度最大;试样在盐卤水介质中的电极反应是不可逆的,其腐蚀反应既受活化极化控制,又受溶液扩散控制。

关键词 电极反应盐卤两碱法腐蚀金相显微镜    
Abstract

The influence of the resistance to corrosion behavior was studied for industrial titanium in bittern solution under the different concentrations of CO32- and the different values of pH and the different temperatures by electrochemical method and electrochemical impedance spectra and the weight loss in coupon tests in this paper. Electrode process was discussed and impedance was analyzed. The corrosion images were observed by metallurgical microscope after the mass loss tests. The results showed that the resistance to corrosion enhanced obviously for the metal system decreased gradually with increasing the concentration of CO32- and increasing the pH value, and decreased with rising up temperature. The resistance to corrosion enhanced first and then decreased oppositely with increasing the immersion time and the value of Vp was the biggest after 7 days immersion for titanium in bittern solution. The electrode reaction was irreversible and controlled by both activation polarization and diffusiveness for titanium in bittern medium.

Key wordsbittern    two-alkali method    corrosion    optical microscope    electrode reaction
收稿日期: 2007-07-30     
ZTFLH: 

TG174.2

 
基金资助:

四川省科技厅应用基础项目基金资助(2008JY0091-2)

通讯作者: 蒋伟     E-mail: ilyjiangwei@126.com
Corresponding author: JIANG Wei     E-mail: ilyjiangwei@126.com
作者简介: 龚敏,女,1963年生,教授,研究方向为化工腐蚀与防护

引用本文:

龚敏 蒋伟 邹振 陈 建 梁刚. 两碱法对钛材在盐卤中腐蚀行为的影响[J]. 中国腐蚀与防护学报, 2009, 29(3): 191-198.
JIANG Wei. INFLUENCE OF TWO-ALKALI METHOD ON CORROSION BEHAVIOR FOR TITANIUM IN BITTERN SOLUTION. J Chin Soc Corr Pro, 2009, 29(3): 191-198.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2009/V29/I3/191

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