异种金属电偶腐蚀防护方法研究进展

Research Progress of Protection Methods Against Dissimilar Metals Galvanic Corrosion

摘要:

铝合金、钛合金等轻质合金材料广泛应用于飞机、舰船等高端装备的管路系统中，用来传送水、油/气等工质并连接各种机械设备。在应用过程中，异种金属在电解液中接触而引起电化学反应并发生明显的电偶腐蚀现象，直接影响设备的结构完整性和服役安全性，必须采取措施预防此类电偶腐蚀的发生。介绍了电偶腐蚀发生的原理及影响因素，总结了近年来电偶腐蚀防护方法及绝缘防护涂层的研究现状，提出了电偶腐蚀防护值得关注的问题。

Abstract:

Aluminum alloy， titanium alloy and other lightweight materials are widely used in the pipe system of aircraft， ships and other high-end equipment， used to transfer water， oil/gas and other working medium and connect various mechanical equipment. In the process of practical application， the contact of dissimilar metals in the electrolyte causes electrochemical reaction and obvious galvanic corrosion phenomenon occurs. The occurrence of galvanic corrosion will affect the structural integrity of the equipment and service safety， it is necessary to take measures to intervene in the occurrence of galvanic corrosion at the contact interface of dissimilar metals. This paper introduces the principle of galvanic corrosion and its influencing factors， and reviews the current status of research on galvanic corrosion protection methods and insulating protective coatings in recent years.