| 高青阳,赵锐,王焕焕,杜敏.Al-Mg-Ga牺牲阳极的电化学性能研究[J].装备环境工程,2018,15(3):29-34. GAO Qing-yang,ZHAO Rui,WANG Huan-huan,DU Min.Electrochemical Properties of Al-Mg-Ga Sacrificial Anode[J].Equipment Environmental Engineering,2018,15(3):29-34. |
| Al-Mg-Ga牺牲阳极的电化学性能研究 |
| Electrochemical Properties of Al-Mg-Ga Sacrificial Anode |
| 投稿时间：2017-10-07 修订日期：2018-03-15 |
| DOI：10.7643/ issn.1672-9242.2018.03.006 |
| 中文关键词: Al-Mg-Ga铝合金 铝铝复合阳极 模拟实海 初始极化性能 耦合电位 |
| 英文关键词:Al-Mg-Ga aluminium alloy Al-Al composite anode simulation field test initial polarization property coupling potential |
| 基金项目:国家自然科学基金（No. 41576076）；国家环境腐蚀平台项目（NECP） |
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| Author | Institution |
| GAO Qing-yang | School of Materials Science and Engineering, Xi′an Jiaotong University, Xi′an 710049, China |
| ZHAO Rui | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China |
| WANG Huan-huan | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China |
| DU Min | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China |
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| 中文摘要: |
| 目的 研究Al-Mg-Ga牺牲阳极的电化学性能及其与标准铝合金牺牲阳极复合后的性能。方法 设计一种Al-Mg-Ga铝合金牺牲阳极，通过4天加速试验和模拟实海实验研究其电化学性能、初始极化性能以及与Al-Zn-In-Si基底阳极不同面积比复合后的耦合电位。对腐蚀不同状况下的铝活性阳极进行能谱分析（EDX）和扫描电镜（SEM），探讨其活化机理。结果 4天加速试验显示，Al-Mg0.6%-Ga0.05%牺牲阳极开路电位、工作电位较负，分别达到-1.5 V（vs. SCE）和-1.3 V（vs. SCE），适合作为复合阳极中的活性阳极材料。模拟实海试验显示，铝铝复合阳极在阴极保护中初始极化性能良好，能够发出较大电流，得到了-1.2~ -1.3 V（vs. SCE）之间的耦合电位。结论 研制的铝铝复合牺牲阳极发出的初始电流约为中期电流的3倍以上，同时不同的面积比设计的复合阳极耦合电位在-1.2~ -1.3 V（vs. SCE）之间。 |
| 英文摘要: |
| Objective To research electrochemical performance of Al-Mg-Ga sacrificial anode and the proper ties of the composite anode, which were combined with the standand aluminium alloy sacrificial anode. Methods An Al-Mg-Ga aluminium alloy sacrificial anode was designed to study electrochemical property, initial polarization property and coupling potential with Al-Zn-In matrix anode at different area ratio by 4-day acceleration test and simulation field test. SEM and EDX analysis were used to discuss the excitation mechanism. Results The open circuit potential and working potential of Al-Mg0.6%-Ga0.05% sacrificial anode were more negative, reaching -1.5 V (vs. SCE) and -1.3 V (vs. SCE) respectively. It was suitable to be used as active anode in composite anode. The simulation field test showed that the initial polarization property of Al-Al composite anode was good in cathodic protection. It could put large current to get the coupling potential between -1.2 to -1.3 V (vs. SCE). Conclusion The initial current sent by Al-Al composite anode developed is 3 times more than that of the middle current, at the same time, the area ratio of different design of composite anode coupled potential is 1.2 - 1.3 V (vs. SCE). |
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