Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《腐蚀科学与防护技术》
Abstract： Cold galvanizing coatings were prepared. The coating properties were characterized by salt spray test and electrochemical impedance spectroscopy. Among others, the coating with 95.2% (mass fraction) Zn exhibits the highest corrosion resistance to salt spray, and its corrosion product consists of ZnO and Zn(OH)2. When the Zn content is less than 75%, the impedance of coatings in the solution of 3%(mass fraction) NaCl decreases with the increasing immersion time, and thus the coatings provide inferior protectiveness; when the Zn content is greater than 75%, the impedance of the coating decreases firstly and then increases with the increasing time, which may be ascribed to that the Zn powder in the coating acts as sacrificial anode，which was preferentially corroded in the initial statge.
Subjects: Materials Science >> Materials Science (General) submitted time 2017-03-31 Cooperative journals: 《腐蚀科学与防护技术》
Abstract：通过对比商业化的抑制剂颜料铬酸锶和改性多聚磷酸锶铝，研究了新型绿色抑制剂颜料-肉桂酸铈对轨道交通用7XXX铝合金的腐蚀抑制行为和含肉桂酸铈环氧涂层的腐蚀防护行为。浸泡实验的结果表明，肉桂酸铈和铬酸锶对铝合金的腐蚀具有优秀的抑制作用。极化曲线（PDS）的结果表明，改性多聚磷酸锶铝在浸泡初期对铝合金具有较强的腐蚀抑制能力，而这种腐蚀抑制能力在浸泡后期弱于肉桂酸铈和铬酸锶。研究了含有1%（wt.%）以上三种抑制剂颜料环氧漆的腐蚀行为，电化学交流阻抗谱（EIS）结果表明，含有1%肉桂酸铈的环氧涂层具有优秀的腐蚀防护能力。
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