摘要
以钼酸钠为主缓蚀剂,通过与硫酸锌、硅酸钠和十二烷基苯磺酸钠(SDBS)的复配制得钼系复合缓蚀剂,考察其对3.5%NaCl介质中碳钢的缓蚀性能。通过动电位极化曲线法和正交实验方法确定了最优缓蚀剂配方:钼酸钠50 mg/L、SDBS 30 mg/L、硅酸钠5 mg/L、硫酸锌2 mg/L。动电位极化曲线和失重实验结果一致表明:该复合缓蚀剂的缓蚀性能优异,对碳钢在3.5%NaCl介质的缓蚀率高达90%。同时用扫描电镜研究了碳钢表面的微观形貌变化。
Sodium molybdate is used as the main corrosion inhibitor to derive the molybdenum composite inhibitor combined with the zinc sulfate,sodium silicate and sodium dodecyl benzene sulfonate（ SDBS）. And the corrosion inhibition of carbon steel immersed in 3. 5% Na Cl medium by molybdenum composite inhibitor is investigated. The optimal corrosion inhibitor component that sodium molybdate is 50 mg / L,the SDBS is 30 mg / L,the sodium silicate is 5 mg / L and the zinc sulfate is 2 mg / L,is determined by the potentiodyramc polarization curves and orthogonal test methods. The results of the potentiodyramc polarization curves and the weight loss tests results consistently reveal that the compound corrosion inhibitor has excellent corrosion inhibition performance,and the inhibition efficiency of the potentiodynamic polaniation cnroes method in 3. 5% Na Cl medium is up to 90%. Meanwhile,the microcosmic morphology change of carbon steel surface is studied by scanning electron microscopy.
出处
《四川理工学院学报（自然科学版）》
CAS
2015年第1期9-11,16,共4页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
基金
材料腐蚀与防护四川省重点实验室开放基金项目(2011CL13)
关键词
钼系复合缓蚀剂
NACL
碳钢
molybdenum compound inhibitor
NaCl
carbon steel
