荷叶提取物对Q235钢耐蚀性能影响的研究  

Effect of lotus leaf extract on the corrosion resistance of Q235 steel

作　　者：刘刚 余朝文 武冰冰 张玺 解芳[1,2] Liu Gang;Yu Chaowen;Wu Bingbing;Zhang Xi;Xie Fang(Engineering Research Center of Additive Manufacturing Aeronautical Materials of Henan Province,Nanyang Institute of Technology,Nanyang 473004,China;Nangyang Key Laboratory of Additive Manufacturing Technology and Equipment,Nanyang Institute of Technology,Nanyang 473004,China)

机构地区：[1]南阳理工学院河南省增材制造航空材料工程研究中心,河南南阳473004 [2]南阳理工学院南阳市增材制造技术与装备重点试验室,河南南阳473004

出　　处：《电镀与精饰》2025年第2期38-45,共8页Plating & Finishing

基　　金：国家自然科学基金青年项目(51701026);河南省重点研发与推广专项(科技攻关)(232102230049、232102221022)。

摘　　要：为了探究荷叶提取物在3.5 wt.%NaCl溶液中对Q235钢缓蚀性能的影响,本实验通过采用控制单一变量得出最佳工艺参数,并采用润湿角测试仪、金相显微镜和激光共聚焦显微镜对所形成的膜层进行了表征,利用失重法、电化学等分析测定荷叶提取物的缓蚀效率。结果表明:荷叶提取物可以在Q235钢表面吸附成膜,并且随着缓蚀剂浓度、浸泡时间、处理温度的增大,缓蚀效率呈现先增大后减小的趋势,且在最佳工艺参数(0.6 g/L、6 h、30℃)下,腐蚀电流密度最小为8.36×10^(–6)A·cm^(–2),电荷转移电阻最大为708Ω·cm^(2),此时缓蚀效率高达98.25%。因此荷叶提取物可以有效抑制Q235钢在3.5 wt.%NaCl溶液中的腐蚀行为,有望成为一种环境友好的缓蚀剂。In order to explore the influence of lotus leaf extract on the corrosion inhibition performance of Q235 steel in 3.5 wt.%NaCl solution,the optimal process parameters were obtained by using a single control variable.The film was characterized by wetting Angle tester,metallographic microscope and lase confocal microscope,and the corrosion inhibition efficiency of lotus leaf extract was determined by weight loss method and electrochemical analysis.The experimental results show that lotus leaf extrac can be adsorbed on the surface of Q235 steel to form a film,and with the increase of corrosion inhibito concentration,soaking time and treatment temperature,the corrosion inhibition efficiency increases firs and then decreases.Under the optimal process parameters(0.6 g/L,6 h,30℃),the minimum corrosion current density is 8.36×10^(–6)A·cm^(–2).The maximum charge transfer resistance is 708Ω·cm^(2),and the corrosion inhibition efficiency is up to 98.25%.Therefore,lotus leaf extract can effectively inhibit the corrosion behavior of Q235 steel in 3.5 wt.%NaCl solution,and is expected to become an environmentally friendly corrosion inhibitor.

关 键 词：荷叶提取物 Q235钢 电化学测试 植物缓蚀剂 

分 类 号：TG178[金属学及工艺—金属表面处理]