深海工程装备阴极保护技术进展

Research Progress in Cathodic Protection Technology for Marine Infrastructures in Deep Sea Environment

综述了深海工程装备阴极保护参数、牺牲阳极材料以及阴极保护技术研究及应用现状,分析了深海压力、溶解氧、温度、流速等环境因素对阴极保护电位、电流密度判据,牺牲阳极性能影响,认为温度和流速是影响阴极保护电流密度的两个关键因素,而温度和压力交变是影响牺牲阳极性能的两个主要因素。最后讨论了深海工程装备阴极保护技术发展方向。

The state-of-the-art in cathodic protection technology for marine infrastructures in deep sea was reviewed. This critical review outlined the research progress in cathodic protection parameters, sacrificial anode materials, and the application of cathodic protection technology in deep sea. Emphasis was put on the influenCe of environmental factors such as hydrostatic pressure, dissolved oxygen content, temperature and velocity on the cathodic protection potential, the current density criteria and the performance of sacrificial anodes. Temperature and velocity were found to be the two key factors influencing the cathodic protection current density, while the performance of sacrificial anodes was mainly influenced by temperature and the cyclic hydrostatic pressure. Finally, the trend of development of cathodic protection technology for marine infrastructures in deep sea was discussed.