于湘,俞志东,程丽华,李燕.MoO42-与 Zn2+对镁合金在 NaCl 溶液中的协同缓蚀作用[J].表面技术,2013,42(1):35-38.
YU Xiang,YU Zhi-dong,CHENG Li-hua,LI Yan.Corrosion Inhibition Performance of Magnesium Alloy by MoO42-in Combination with Zn2+in NaCl Solution[J].Surface Technology,2013,42(1):35-38
MoO42-与 Zn2+对镁合金在 NaCl 溶液中的协同缓蚀作用
Corrosion Inhibition Performance of Magnesium Alloy by MoO42-in Combination with Zn2+in NaCl Solution
投稿时间:2012-10-08  修订日期:2012-11-06
DOI:
中文关键词:  镁合金  钼酸盐  Zn 离子  缓蚀作用
英文关键词:magnesium alloy  molybdate  zinc ion  corrosion inhibitor
基金项目:超轻材料与表面技术教育部重点实验室开放基金(20111009) ;广东石油化工学院自然科学基金(510009)
作者单位
于湘 广东石油化工学院 化工与环境学院, 茂名 525000 
俞志东 广东石油化工学院 化工与环境学院, 茂名 525000 
程丽华 广东石油化工学院 化工与环境学院, 茂名 525000 
李燕 广东石油化工学院 化工与环境学院, 茂名 525000 
AuthorInstitution
YU Xiang College of Chemical and Environmental Engineering, Guangdong University of Petrochemical Technology, Maoming 525000 , China 
YU Zhi-dong College of Chemical and Environmental Engineering, Guangdong University of Petrochemical Technology, Maoming 525000 , China 
CHENG Li-hua College of Chemical and Environmental Engineering, Guangdong University of Petrochemical Technology, Maoming 525000 , China 
LI Yan College of Chemical and Environmental Engineering, Guangdong University of Petrochemical Technology, Maoming 525000 , China 
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中文摘要:
      采用动电位极化曲线法,结合腐蚀后的表面微观形貌及 EDS 能谱分析,研究了 MoO42-与 Zn2+对AZ31 镁合金在 3 . 5% NaCl 溶液中的协同缓蚀性能。 结果表明:0 . 005 mol / L Zn2+与 0 . 05 mol / L 钼酸钠联合作用,可有效抑制镁合金在 NaCl 溶液中的腐蚀,Zn2+促进 MoO42-在合金表面的吸附,缓蚀效果优于单一的钼酸盐缓蚀剂。 缓蚀机制是:钼酸盐与 Zn2+协同作用,使镁合金表面形成更为致密的钝化膜,从而抑制镁合金的腐蚀。
英文摘要:
      The inhibition performance and mechanism of molybdate in combination with Zn2+as inhibitors for magnesium alloy were studied in 3 . 5 % NaCl solution by using potentiodynamic polarization curves. The results show that the synergistic inhibition by 0 . 05 mol / L molybdate in combination with 0 . 005 mol / L Zn2+demonstrates strong inhibition to the corrosion of AZ31 magnesium alloy exposed to NaCl solution. The adsorption acting of MoO42-is promoted on the alloy surface by Zn2+,what hold better resistance performance than that of single molybdate corrosion inhibitor. The mixture consisting of molybdate and Zn2+is an inhibitor through forming a compact protective layer that covered the magnesium alloy surface.
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