| 摘要: |
| 铝基牺牲阳极是防止钢铁结构(尤其是海水中的)腐蚀的有效材料，它比镁基、锌基阳极具有更多的优越性，在某些方面也比外加电流阴极保护法为好。所以近十几年来，在国外有了很大的发展。在我国，科学工作者也做了不少研究，并已开始应用。但是，有关阳极的各项性能参数，过去大部分是在实验室条件下测定的，至于在海洋工程实际应用条件下的各项参数及其与海水物理化学性质之间的关系，则尚未见报道。本工作是在室内研究的基础上进一步在实际海洋条件下进行的研究。通过此研究，弄清了主要合金成分和有关海水物理化学因素对阳极性能的影响以及工程设计中应注意的问题。 |
| 关键词: 铝基牺牲阳极 性能 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第745号 |
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| INVESTIGATION OF PROPERTIES OF AL-BASIC SACRIFICIAL ANODES IN THE SEA |
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Zhang Jinglei, Guo Gongyu
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| On the basis of laboratory investigation, 9 types of Al-basic sacrificial anodes with different compositions are selected and studied in the harbour. Anodic closed circuit potential and output currents are also measured. Anodic surface resolved characteristics are recorded in detail at the end of experiment. Current efficiencies and discharge capacities of anodes are calculated. Environment factors: temperature，conductivity, pH and salinity of sea water are measured too.
It can be seen from the results that (1) properties of No. 1 anode are the best, next come Nos. 2,4,6,3,5,7,8,9 in that order. Nos. 1-6 anodes may be applied to protect marine constructions as anodic materials in marine engineering and their discharge capacities are 2-3 times as large as Mg-basic and Zn-basic anodes; (2) effect of alloy element In (indium) on anodic properties is evident, content of In being controlled at about 0.024%. If content of In exceeds 0.03%, properties of anode deteriorate; (3) output currents are affected by anodic properties themself, also by temperature and conductivity of sea water. When temperature and conductivity come down, anodic output current decreaes. |
| Key words: AL-BASIC SACRIFICIAL ANODES PROPERTIES |
