Al-6XN不锈钢在模拟烟气冷凝液中的耐蚀性
Corrosion Resistance of Stainless Steel Al-6XN in Simulated Flu Gas Condensate
摘 要
采用失重法和原子吸收光谱研究了Al-6XN不锈钢在模拟烟气冷凝液中的耐蚀情况，并运用动电位极化分析了在pH=2的溶液中，Cl-、SO42-浓度对其腐蚀行为的影响。结果表明,不锈钢Al-6XN在模拟环境中有较好的耐蚀性; 在酸性Cl-体系中，材料电极表面会发生点蚀，且随Cl-浓度的增大，腐蚀电流密度增大，点蚀电位不断地负移，而SO42-的加入对材料的点蚀有抑制作用。
动电位极化
失重法
stainless steel Al-6XN
potentiodynamic polarization
weight loss method
Abstract
The anti-corrosion conditions of Al-6XN stainless steel was studied in simulated flu gas condensate using weight loss method and atomic absorption spectrum analysis. The effects of Cl-, SO42- concentration on its corrosion behavior were investigated in the pH=2 solution by means of potentiodynamic polarization. The results showed that Al-6XN stainless steel has good corrosion resistance in simulated flu gas condensate, the surface of material electrode suffared pitting corrosion in the acidic Cl- solutions .Moreover, the corrosion current density increased and pitting potential continuously shifted negatively with Cl- concentration increasing, but the addition of SO42- inhibited the pitting corrosion.
中图分类号 TG174.2
所属栏目 试验研究
基金项目 国家自然科学基金(61074018)
收稿日期 2013/8/17
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联系人作者李宇春(iamlyc@263.net)
备注李宇春(1972-),教授,博士,从事电厂化学、材料腐蚀与防护等方面研究,
引用该论文: KANG Juan,ZHOU Nian-guang,YU Miao,LI Mei,HE Yu-wu,LI Yu-chun. Corrosion Resistance of Stainless Steel Al-6XN in Simulated Flu Gas Condensate[J]. Corrosion & Protection, 2014, 35(6): 572
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