无磷海水缓蚀剂的开发  

Development of Seawater Inhibitors without Phosphor

作　　者：柳鑫华[1] 孙彩云[1] 王庆辉[1] 韩婕[1] 佟欣佳[1] 

机构地区：[1]河北联合大学轻工学院,唐山063000

出　　处：《表面技术》2013年第1期94-97,共4页Surface Technology

基　　金：河北省科技局科技攻关项目(06213027)

摘　　要：通过失重法测定腐蚀速率,并计算缓蚀率,确定了具有较好协同缓蚀效应的四元无磷海水缓蚀剂配方,并通过电化学极化、SEM、EDS等分析手段,对该无磷海水复合缓蚀剂的缓蚀机理进行了研究。结果表明:配方以40 mg/L钨酸盐+40 mg/L葡萄糖酸盐+4 mg/L Zn2++30 mg/L三乙醇胺为宜,该缓蚀剂在海水中对碳钢的缓蚀率超过90%;此无磷复合缓蚀剂为阳极型缓蚀剂,海水中添加了此缓蚀剂后,碳钢试片表面形成了以氧化铁为主要成分,同时含有钨和锌的混合型沉淀膜。A quaternary corrosion inhibitor formula without phosphorus, which has a good synergistic effect was conformed in natural seawater through measuring corrosion rate and corrosion rate with the weight loss method. Corrosion mechanism of the compound corrosion inhibitors was studied through the electrochemical polarization, SEM and EDS analysis method. The results indicate that the inhibition efficiency is over 90% in the proportion of 40 mg/L stungstate,40 mg/L sodium gluconate,4 mg/L Zn2＋and 30 mg/L TEA. The compound inhibitor is an anodic corrosion inhibitor which formes a compact film on carbon steel surface, the main composition of the film is iron oxide with some W and Zn.

关 键 词：钨酸盐 无磷缓蚀剂 海水 缓蚀性能 

分 类 号：TG174.42[金属学及工艺—金属表面处理]