Kang Baosheng,Qi Xin,Qi Qianyi,et al.Synergistic corrosion inhibition effect of composite corrosion inhibitor on carbonsteel in softened water?/html>[J].Plating & Finishing,2023,(3):1-10.[doi:10.3969/j.issn.1001-3849.2023.03.001]
复合缓蚀剂在软化水中对低碳钢的协同缓蚀作用
- Title:
- Synergistic corrosion inhibition effect of composite corrosion inhibitor on carbonsteel in softened water?/html>
- Keywords:
- composite corrosion inhibitor ; carbon steel ; softened water ; corrosion mechanism
- 分类号:
- TG174.42
- 文献标志码:
- A
- 摘要:
- 采用静态失重法、电化学测试和表面表征技术研究了环境友好型复合缓蚀剂对低碳钢在软化水中的缓蚀作用。结果表明，钼酸钠、硅酸钠、四硼酸钠和葡萄糖酸钠 4 种单组分缓蚀剂在成本和缓蚀率上都不具有优势，复合缓蚀剂的缓蚀率远高于相同剂量的单组分缓蚀剂。浓度为 140 mg/L 的复合缓蚀剂在温度 50 ℃ 和浸泡时间 72 h 条件下的缓蚀率为 84.77 % 。当温度改变后，缓蚀率变化较小，说明复合缓蚀剂具有一定的稳定性。扫描电镜（ SEM ）表面观察证实了复合缓蚀剂在碳钢表面的腐蚀抑制作用，通过光电子能谱（ XPS ）分析推测了复合缓蚀剂对腐蚀的抑制机理，从而阐明碳钢表面缓蚀剂的协同保护机制。
- Abstract:
- ： The corrosion inhibition effect of environmentally friendly compound corrosion inhibitor on carbon steel in softened water was studied by static weight loss method ， electrochemical test and surface characterization. The results show that sodium molybdate ， sodium silicate ， sodium tetraborate and sodium gluconate have no advantages in terms of cost and inhibition efficiency ， and the inhibition efficiency of the composite inhibitor is much higher than that of the single component inhibitor at the same dose. The corrosion inhibition efficiency of the composite inhibitor with concentration of 140 mg/L was 84.77% at the temperature of 50 ℃ and soaking time of 72 h. When the temperature changes ， the corrosion inhibition efficiency changes little ， indicating that the composite corrosion inhibitor has a certain stability. SEM surface observation confirmed the corrosion inhibition effect of the composite corrosion inhibitor on the surface of carbon steel ， and XPS analysis was used to speculate the corrosion inhibition mechanism of the composite corrosion inhibitor ， so as to clarify the synergistic protection mechanism of carbon steel surface corrosion inhibitor.
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备注/Memo
收稿日期： 2022-10-20 修回日期： 2022-11-08 作者简介： 康保生（ 1998 — ），男，硕士研究生， e-mail ： kbs1966836546@163.com 通信作者： 杨红健，博士，副教授， e-mail ： 1991033@hebut.edu.cn