With the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences as the project's supporting agency, the National Fundamental Fundamental Research Program (973 Project) “Study on Key Technologies for Corrosion and Protection of Marine Engineering Equipment Materials†has achieved fruitful results in the collaborative research work in the past two years. The results were approved by the Ministry of Science and Technology in mid-term acceptance in October 2015.
The research work of the project revolved around the "Mechanism-Electrochemical Interaction Mechanism and Law of Corrosion and Damage of Materials under Multiple Marine Environmental Factors", "Chemical-Electrochemical Interaction Mechanism and Law of Material Corrosion under High-Temperature and High-Humidity Marine Environment", " "The Mechanism of Bio-organism Adhesion and Microbial Corrosion in Marine Environments" and "Structure and Performance Control of Novel Corrosion-resistant, Wear Resistant Metal and Protective Materials in Deep-sea and High-humidity and Heat Environments" and other four key scientific issues, and conduct comprehensive research .
Based on a large number of experimental research data, the project has for the first time clarified four new laws concerning marine environmental corrosion in marine atmospheric corrosion, marine environmental corrosion, marine microbial corrosion, and marine biological corrosion, and proposed the establishment of an alloy chemistry in a medium-high temperature brine vapor coexistence environment. Electrochemical Corrosion Mechanism, Marine Atmospheric Environment Corrosion Mechanism, Marine Atmospheric and Sputtering Zone Environmental Corrosion Stress Mechanism, Deep Sea Environmental Corrosion Mechanism, Mechanism of Corrosion of Sulfate Reducing Bacteria in Seawater Environment, Marine Biofouling Based on Barnacle Molecular Dynamics Six new theoretical understandings such as mechanism. It has been applied in four major projects including the development of new corrosion-resistant steels, the design guidance for anti-corrosion of South Island Reef and the application of dynamic wear-resistant anti-corrosion coating, the comprehensive corrosion treatment of Wenchang Space Launch Site, and the general survey of corrosion in Thailand.
The project has published 112 papers in domestic and foreign journals, including more than 30 high-level papers published internationally; 38 invention patents filed; 2 monographs published. Among them, the concept of corrosive big data originality proposed by the chief scientist Li Xiaogang and the research team of the Beijing University of Science and Technology, and the process and practice of the treatment of corrosion big data, were published in the world's top scientific journal Nature (Nature, 527, 41-442 , 2015). In addition, the Song Zhenlun team of the Key Laboratory of Marine New Materials and Applied Technology of the Chinese Academy of Sciences for the first time discovered a marine bacterium named Vibrio neocaledonicus sp that can form highly inactivated organisms on metal surfaces. The membrane reduces the corrosion rate of carbon steel by 60 times. The high corrosion resistance of the bacteria can provide new ideas for the development of metal protection technology in the future.
After two years of research work, these results not only laid a solid theoretical basis and technical foundation for the project to achieve the five-year expected goal, but also formed a series of application examples of engineering exports. Ningbo Materials Institute will cooperate with other units to complete the tasks for the next three years.
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