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| Control Technology on Galvanic Corrosion of Compound Potential |
| Received:July 07, 2017 Revised:October 15, 2017 |
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| DOI：10.7643/issn.1672-9242.2017.10.020 |
| KeyWord:compound potential galvanic corrosion corrosion control |
| Author | Institution |
| MA Qing-hua |
Navy Equipment Technology Institute, Beijing, |
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| Abstract: |
| This paper introduced the principle and technical characteristics of galvanic corrosion control technology of compound potential, expounded the two actual cases of eliminating and retarding galvanic corrosion control, and illuminated the uses of this invention. The compound potential galvanic corrosion control technology is a new anticorrosion technology aimed at galvanic corrosion between dissimilar metals. The technology lets cathode form compound potential by connecting compound anode and imposing anodic current on cathode, to be polarized for lowering its potential, to control galvanic corrosion, through the way that reduces or eliminates the potential difference between metals, so as to solve the problem of galvanic corrosion due to corrosion-resistant metal application that cannot or is difficult to be solved by conventional ways . This technology is different from cathode protection. Its corrosion control is carried out according to the galvanic corrosion source of potential difference. The content of electrochemical protection method is enriched. Practical application results show that the technology not only is the way of controlling galvanic corrosion between dissimilar metals, but also provides a design method of equal potential balance for electrochemical matching of metal materials. |
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