东南亚热带海洋环境具有高湿、高温、高氯离子含量、高辐照特征，属于极严酷腐蚀环境，基础设施钢材面临设施安全、可靠性、运行寿命等重要问题。我国热带海洋环境南海岛礁建设也面临基础设施材料选择、耐蚀钢和防护措施适用性、腐蚀防护技术及寿命评估等一系列相同科研难题。高湿热严酷海洋环境腐蚀方法、电化学腐蚀机理及耐蚀理论极为缺乏，导致上述科技难题的解决陷入困境。本项目通过开展东南亚海洋环境现场腐蚀载荷谱数据收集与分析，结合设计室内腐蚀实验新方法，通过宏微观电化学等多种分析测试方法开展腐蚀机理研究，建立适用于东南亚海洋环境耐蚀钢、焊接工艺及防护涂层体系，形成耐蚀钢及腐蚀防护措施东南亚海洋环境适用性评估技术。

The tropical marine environment in Southeast Asia is characterized by high humidity, high temperature, high chloride ion content and high radiation. It is a very severe corrosive environment. The infrastructure steel is faced with important problems such as safety, reliability and operation life. The construction of South China Sea Islands and reefs in tropical marine environment in China is also faced with a series of similar scientific research problems, such as the selection of infrastructure materials, the applicability of corrosion-resistant steel and protective measures, corrosion protection technology and life assessment. The lack of corrosion methods, electrochemical corrosion mechanism and corrosion resistance theory in high humidity and severe marine environment leads to the dilemma of solving the above scientific and technological problems. Through the collection and analysis of corrosion load spectrum data in the marine environment of Southeast Asia, combined with the design of new methods of indoor corrosion experiment, the corrosion mechanism research was carried out through macro micro electrochemical and other analysis and testing methods, and the corrosion resistant steel, welding process and protective coating system suitable for the marine environment of Southeast Asia were established, To form the assessment technology of corrosion-resistant steel and corrosion protection measures for marine environment applicability in Southeast Asia.