| 海水温度对Al-Zn-Ga-Si低电位牺牲阳极性能的影响 |
| |
| 引用本文： | 曲本文,马力,闫永贵,李威力.海水温度对Al-Zn-Ga-Si低电位牺牲阳极性能的影响[J].腐蚀科学与防护技术,2015,27(3):259-263. |
| |
| 作者姓名： | 曲本文 马力 闫永贵 李威力 |
| |
| 作者单位： | 1. 青岛科技大学 机电工程学院 青岛 2660612. 海洋腐蚀与防护重点实验室 中国船舶重工集团公司第七二五研究所 青岛 266101 |
| |
| 摘 要： | 采用恒电流实验评价了Al-Zn-Ga-Si牺牲阳极在不同温度海水中的电化学性能,并利用电化学阻抗谱研究了其电化学行为,探讨了温度对阳极活化溶解的影响机制。结果表明：随着海水温度的降低,阳极的开路电位和工作电位均呈正移趋势,但工作电位在-0.770~-0.850 V之间。在低温下阳极的溶解性能变差,呈不同程度的局部腐蚀溶解,原因是温度降低影响了阳极表面活化溶解点产生的活化金属离子的扩散。
|
| 关 键 词： | Al合金 低电位 牺牲阳极 电化学性能 |
Influence of Temperature on Electrochemical Performance of Low Driving Voltage Al-Zn-Ga-Si Anode in Seawater |
| |
| Benwen QU,Li MA,Yonggui YAN,Weili LI.Influence of Temperature on Electrochemical Performance of Low Driving Voltage Al-Zn-Ga-Si Anode in Seawater[J].Corrosion Science and Protection Technology,2015,27(3):259-263. |
| |
| Authors: | Benwen QU Li MA Yonggui YAN Weili LI |
| |
| Abstract: | The electrochemical performance of sacrificial anode material Al-Zn-Ga-Si alloy was evaluated by constant current test in seawater at different temperatures, while its electrochemical impedance spectroscopy was investigated by EIS. The results showed that the working potential of the alloy exhibits a tendency of positive shift with the decreasing of seawater temperature, however, which varied from -0.770~-0.850 V (vs Ag/AgCl seawater). After electrochemical performance test in seawater at low temperature, the alloy exhibited a surface morphology with characters of localized corrosion, which may be due to that the diffusivity of the dissolved metal ions on anode surface was suppressed. |
| |
| Keywords: | Al alloy low driving voltage sacrificial anode electrochemical performance |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《腐蚀科学与防护技术》浏览原始摘要信息 |
|
点击此处可从《腐蚀科学与防护技术》下载全文 |
