Corrosion losses account for about 3–5% of GDP, which is much higher than the total losses from natural disasters and various accidents.
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Corrosion is characterized by its ubiquity, concealment, gradual progression, and sudden onset. It not only consumes resources and pollutes the environment but also causes numerous industrial accidents, posing a threat to human health and safety. It is also a problem faced by countries around the world. According to relevant statistics, corrosion losses account for approximately 3–5% of each country’s GDP annually, which is far higher than the total losses caused by natural disasters and various accidents. Currently, the series on research findings titled “Research on the Corrosion Situation and Control Strategies in China” has been published. Academician Hou Baorong explained that the achievements at the current stage are primarily related to the calculation of corrosion costs, while future research will focus on proposing specific anti-corrosion measures for various industries. Taking steel as an example, for every 1 millimeter of corrosion-induced thinning, its strength decreases by 5% to 10%. It’s not the case that damage occurs only after the metal has completely corroded; when the wall thickness thins to a certain extent due to corrosion, damage can occur under the influence of loads or pressures. In fact, accident cases caused by corrosion at home and abroad are not uncommon.
Corrosion-resistant materials, electrical corrosion protection, rust preventive oils, surface treatment, corrosion inhibitors, coating applications… Corrosion occurs inevitably in every aspect of life, and corrosion prevention technologies are also constantly evolving. In marine corrosion, Academician Hou Baorong believes that the most serious problem is the corrosion of marine steel structure projects in areas subject to wave splashing. This phenomenon cannot be completely eliminated at present, but effective measures can be taken to control it. In addition to properly designing metal components and selecting appropriate materials, there are usually the following approaches: first, using thick-coat heavy anti-corrosion coatings; second, covering critical components and areas with corrosion-resistant materials; third, taking into account an adequate margin against corrosion when designing the components; and fourth, utilizing sacrificial anode protection for the cathodic materials, based on the principles of electrochemical corrosion. In his report on research findings, Academician Hou Baorong said that corrosion is a problem related to safety, economics, ecological civilization, national welfare and people’s livelihoods, as well as resource conservation. To this end, the project team prepared an academician’s recommendation titled \"On Incorporating the Safety of Corrosion Protection for Infrastructure and Major Equipment in Our Country into the **Strategy\", which includes integrating corrosion protection measures into the **Strategy\" ； Launch legislation on corrosion protection for the People’s Congress as soon as possible ； Establish a National Corrosion Protection Safety Day. Academician Wang Jingquan believes that, after recognizing the hazards of corrosion and the necessity of corrosion control, prioritizing such control relies on technological progress, innovation, and transformation. In the future, large-scale, extensive construction projects should no longer be carried out; instead, a more refined approach is needed. To achieve better quality and greater durability in construction projects, a range of technologies for controlling corrosion are required. It is also necessary to understand how to develop new materials and how to use them scientifically. The field of corrosion prevention holds great prospects; more new technologies will emerge and more skilled professionals will appear in this area. We should pay attention to it, conducting research in the areas of corrosion prevention theory, technology, materials, and structures, while also fostering innovation and entrepreneurship to contribute to economic transformation as well as to improving the durability of products and structures.
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