基于壬酸复配的绿色气相缓蚀剂及其性能研究  

Study on the Performance of Green Volatile Corrosion Inhibitor Based on Pelargonic Acid Compound

作　　者：王佳 刘心悦 卢立新 WANG Jia;LIU Xinyue;LU Lixin(School of Mechanical Engineering,Jiangnan University,Wuxi 214122,China;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment Technology,Wuxi 214122,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《材料保护》2024年第10期162-167,212,共7页Materials Protection

摘　　要：气相缓蚀技术在金属腐蚀防护中发挥着重要作用,研发新型环保且高效的气相缓蚀剂配方具有重要意义。以10钢为研究对象,开展壬酸与钼酸钠双组分复配,通过失重试验探究其气相缓蚀效果,采用电化学工作站、水接触角测试仪、白光干涉形貌仪、扫描电镜、能谱仪对电化学和失重试验后的金属表面腐蚀情况进行分析。结果表明:复配缓蚀剂是一种阳极缓蚀剂;与单组分比较,不同比例的壬酸与钼酸钠复配剂的缓蚀效果均得到提高;壬酸与钼酸钠复配优化能发挥协同作用,当复配比例(质量比)为7∶3条件下,其缓蚀效率达92.89%,试样金属表面水接触角为112.6°并形成了疏水保护层,显著抑制了Fe的溶解和氧化产物生成,有效降低了金属表面粗糙度。The volatile corrosion inhibition technology plays an important role in metal corrosion protection,and it is of great significance to de-velop new environment-friendly and efficient volatile corrosion inhibitor formulations.Using 10 steel as the research object,a study was conduc-ted on the binary combination of pelargonic acid and sodium molybdate to explore its volatile phase corrosion inhibition effect through weight loss experiments.The corrosion conditions of the metal surfaces after electrochemical and weight loss tests were analyzed using electrochemical workstation,water contact angle tester,white light interferometer,scanning electron microscopy(SEM),and energy dispersive spectrometer(EDS).Results showed that the composite inhibitor acted as an anodic corrosion inhibitor.Compared to single components,the corrosion inhi-bition efficiency of the different ratios of pelargonic acid and sodium molybdate was improved.The optimized combination of pelargonic acid and sodium molybdate exhibited a synergistic effect,achieving a corrosion inhibition efficiency of 92.89%at a ratio of 7∶3.The water contact angle of the metal surface was measured at 112.6°,forming a hydrophobic protective layer that significantly suppressed the dissolution of Fe and the formation of oxidation products,effectively reducing the surface roughness of the metal.

关 键 词：壬酸 钼酸钠 防锈 气相缓蚀剂 腐蚀 

分 类 号：TG174.42[金属学及工艺—金属表面处理]