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中国腐蚀与防护学报  2013, Vol. 33 Issue (6): 470-474    
  研究论文 本期目录 | 过刊浏览 |
Na2MoO4-有机膦A复合缓蚀剂对55%LiBr溶液中碳钢的缓蚀行为
李杰兰1,2 梁成浩1 黄乃宝1
1. 大连海事大学交通运输装备与海洋工程学院 大连 116026;
2. 辽宁师范大学化学化工学院 大连 116029
Corrosion Inhibition Behavior of Carbon Steel in 55%LiBr Solution Containing Na2MoO4-organophosphorus A Complex Inhibitor
LI Jielan1,2, LIANG Chenghao1, HUANG Naibao1
1. Transportation Equipments and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China;
2. School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
全文: PDF(1835 KB)  
摘要: 采用失重法、电化学测试技术、原子力显微镜和电子探针显微分析等方法考察了Na2MoO4-有机膦A复合缓蚀剂对55%LiBr+0.07 mol/L LiOH溶液中碳钢的缓蚀性能。结果表明,240 ℃下碳钢在添加800 mg/L Na2MoO4-有机膦A复合缓蚀剂的55%LiBr+0.07 mol/L LiOH溶液中的腐蚀速率为43.2 μma-1。在沸腾的55%LiBr+0.07 mol/L LiOH溶液中添加该缓蚀剂后,碳钢的钝化电位区间拓宽,钝化电流密度降低,反应电阻Rt值显著增加,缓蚀效率可达94.4%。该缓蚀剂能使碳钢表面形成显微结构为孤岛状的膜层,主要成分为Fe和Mo的氧化物。
关键词 碳钢LiBr有机膦Na2MoO4    
Abstract:The inhibition effect of Na2MoO4-organophosphorus A complex inhibitor on the corrosion of carbon steel in 55%LiBr+0.07 mol/L LiOH solution was studied by weight-loss tests, electrochemical measurements, AFM and EMPA. The results show that Na2MoO4-organophosphorus A complex inhibitor performed excellent inhibition in the solution. When its concentration reached 800 mg/L in 55%LiBr+0.07 mol/L LiOH solution at 240 ℃, the corrosion rate of carbon steel decreased to 43.2 μma-1, the anodic passivation region broadened and the passive current density of carbon steel decreased, the inhibition efficiency was 94.4%. At the same time, the charge transfer resistance increased. The compact compound film formed on the surface of carbon steel in 55% LiBr+0.07 mol/L LiOH solution containing the inhibitor. The film with island structure was mainly composed of iron oxide and molybdenum oxide.
Key wordscarbon steel    LiBr    organophosphorus    Na2MoO4
收稿日期: 2013-01-25     
ZTFLH:  TG174.42  
基金资助:国家高技术研究发展计划项目 (2006AA11A134) 资助
通讯作者: 梁成浩,E-mail:lchenghao@126.com   
作者简介: 李杰兰,女,1979年生,讲师,博士生,研究方向为金属腐蚀与防护

引用本文:

李杰兰, 梁成浩, 黄乃宝. Na2MoO4-有机膦A复合缓蚀剂对55%LiBr溶液中碳钢的缓蚀行为[J]. 中国腐蚀与防护学报, 2013, 33(6): 470-474.
. Corrosion Inhibition Behavior of Carbon Steel in 55%LiBr Solution Containing Na2MoO4-organophosphorus A Complex Inhibitor. Journal of Chinese Society for Corrosion and protection, 2013, 33(6): 470-474.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2013/V33/I6/470

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