Effect of Sample Form and Cl- Concentration on Pitting Behavior of Alloy 690TT in High Temperature and High Pressure Water
摘 要
采用动电位极化法在高温高压水环境中研究了690TT合金的点蚀行为。结果表明:试样与导线点焊部位处的封装影响试样的点蚀电位;管状、片状和棒状试样在自然状态下产生的钝化膜稳定,形状的变化与钝化膜厚度的改变不影响点蚀电位,在Cl-质量分数≤0.001%的溶液中,690TT合金不发生点蚀行为,但随着Cl-含量的增加,点蚀发生并加剧。
Abstract
Pitting behavior of alloy 690TT in high temperature and high pressure water solution was investigated by polarization curves. The results show that different sealing ways of the spotwelded section of samples had effect on the pitting potential. For the tube sample, sheet sample and rod sample, the passivation films formed in the air environment were stable, and the changes in sample form and passivation film thickness had no effect on the pitting potential. When the concentration of Cl- was not higher than 0.001%, no pitting occured and above this concentration, and pitting corrosion was aggravated with the increase of Cl- concentration.
中图分类号 TG174 DOI 10.11973/fsyfh201607010
所属栏目 核电设备材料防护
基金项目
收稿日期 2016/5/28
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备注高路杨(1983-),工程师,硕士,从事核设备可靠性与寿命评定相关研究
引用该论文: GAO Luyang,DAN Tichun,SHI Huilie,GUI Chun. Effect of Sample Form and Cl- Concentration on Pitting Behavior of Alloy 690TT in High Temperature and High Pressure Water[J]. Corrosion & Protection, 2016, 37(7): 575
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参考文献
【1】UH C K. Effects of chemical compounds on the stress corrosion cracking of steam generator tubing materials in a caustic solution\[J\]. Journal of Nuclear Materials,2005(341):169174.
【2】丁训慎. 核电站蒸汽发生器传热管的点腐蚀及其防护\[J\]. 腐蚀与防护,2007,28(7):364366.
【3】叶超,杜楠,赵晴,等. 不锈钢点蚀行为及研究方法的进展\[J\]. 腐蚀与防护,2014,35(3):271276.
【4】任爱,李成涛. Cl-对690合金在高温高压水中腐蚀行为的影响\[J\]. 中国有色金属学报,2012,22(4):10821087.
【5】龚利华,张波,江琳琳. 不锈钢作为给水材料在含Cl-水中的腐蚀行为\[J\]. 腐蚀与防护,2007,28(8):400402.
【2】丁训慎. 核电站蒸汽发生器传热管的点腐蚀及其防护\[J\]. 腐蚀与防护,2007,28(7):364366.
【3】叶超,杜楠,赵晴,等. 不锈钢点蚀行为及研究方法的进展\[J\]. 腐蚀与防护,2014,35(3):271276.
【4】任爱,李成涛. Cl-对690合金在高温高压水中腐蚀行为的影响\[J\]. 中国有色金属学报,2012,22(4):10821087.
【5】龚利华,张波,江琳琳. 不锈钢作为给水材料在含Cl-水中的腐蚀行为\[J\]. 腐蚀与防护,2007,28(8):400402.
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