Corrosion Rules and Protection Measures of Nonferrous Metals in Environment of South China Sea AITranslate
Abstract AITranslate
Nonferrous metals,which are the basic materials for the development of China's national economy,are widely used in navigation,aviation,electronic communication,machinery manufacturing industry and many other fields due to their unique physical,chemical and mechanical properties that not provided by steel materials. The South China Sea is a significant maritime transportation hub and military hub of China,possessing a powerful political position. Thus,a large number of nonferrous metal materials are served in the South China Sea and has played a vital role in the construction of ships,deep submergence equipment,offshore drilling platforms,offshore helicopters and other fields. In the 21st century,intensifying the engineering construction in marine has become a significant part of the strategy of national economy development,so the South China Sea has become one of the most important service environments for many marine equipment. However,the corrosion and failure of materials in the marine environment seriously threaten the service safety of engineering equipment. For various structural materials,marine corrosion will not only cause damage and loss of functions of various infrastructures,equipment and structures,shorten the service life of materials and structures,cause huge waste of resources,materials and energy,but also lead to sudden disasters and accidents,and even cause casualties. The South China Sea has a typical harsh marine environment. The environmental characteristics of high temperature,high humidity,high salt,and high sunlight radiation all year round make the non-ferrous metals serving here extremely corrosive,which often causes losses that cannot be ignored. Nonferrous materials have various types with different electrode potential,crystal structure and surface properties,so they have different corrosion characteristics and development laws. For example,aluminum and its alloys are relatively corrosion resistant due to the existence of dense oxide film on its surface,and the main corrosion form is pitting corrosion. The magnesium and its alloy have poor corrosion resistance due to the low electrode potential of magnesium and their corrosion is a dynamic process from pitting corrosion to uniform corrosion;Titanium alloy has strong corrosion resistance,and its performance is mainly affected by biological fouling. Nickel based alloys have high corrosion potential and strong corrosion resistance in the South China Sea environment,and their main corrosion in seawater is pitting corrosion.On the other hand,the corrosion behavior of the same metal in different marine environmental zones is also different.The marine environment can be divided into five zones,namely,marine atmospheric zone,spray splash zone,tidal range zone,seawater immersion zone and sea mud zone. Among them,the marine atmospheric area is the main service environment for non-ferrous metals,and the non-ferrous metal corrosion in this environment is under the collaborative control of land atmosphere,sea salt particles,solar radiation and other factors. The metal materials in the spray splash area have the most serious corrosion due to the alternating dry and wet environment.The corrosion of metals in tidal range area is relatively light due to the effect of seawater tide. The metal corrosion in seawater immersion area is mainly controlled by dissolved oxygen concentration,salinity,temperature and other factors in seawater,while the metal corrosion in sea mud area is mainly caused by microorganisms. According to the research status of corrosion behavior of various nonferrous metals in the South China Sea environment,this review analyzed the corrosion characteristics,rules and hidden dangers of aluminum,titanium,copper,magnesium,nickel,zinc and their alloys in the specific environmental zone of the South China Sea,and summarized the corrosion protection measures of aluminum,titanium,copper,magnesium applicable to the special environmental conditions of the South China Sea. At the same time,some deficiencies in the current research on the corrosion of nonferrous metals in the South China Sea environment were pointed out: 1) For the explanation of metal corrosion mechanism,most of them only focused on the external environmental factors,and there was a lack of in-depth and extensive research on the reasons that metal body was easy to induce certain corrosion forms,such as crystal structure,alloy composition and so on. 2) The corrosion research mainly focused on the marine atmospheric area,and there was little research on the corrosion behavior in the deep-sea environment,so a complete system could not be formed. In the future,the application of nonferrous metals and their alloys was expected to further develop in the deep-sea field,and the research on their deep-sea corrosion mechanism had far-reaching significance for the development of deep-sea engineering. 3) There was a lack of research on anti-corrosion strategies for tropical marine environment. Most non-ferrous metal marine anti-corrosion technologies were tested in simulated seawater,and their anti-corrosion life in the extreme marine environment of the South China Sea might be shortened or even invalid.Therefore,it was necessary to strengthen the research on nonferrous metal anti-corrosion strategies for the tropical marine climate of the South China Sea,and conducted inspection in the real sea environment to obtain more accurate results.
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Basic Information:
DOI:10.13373/j.cnki.cjrm.XY22110037
Chinese Library Classification Number:TG146
Citation Information:
Nonferrous metals,which are the basic materials for the development of China's national economy,are widely used in navigation,aviation,electronic communication,machinery manufacturing industry and many other fields due to their unique physical,chemical and mechanical properties that not provided by steel materials. The South China Sea is a significant maritime transportation hub and military hub of China,possessing a powerful political position. Thus,a large number of nonferrous metal materials are served in the South China Sea and has played a vital role in the construction of ships,deep submergence equipment,offshore drilling platforms,offshore helicopters and other fields. In the 21st century,intensifying the engineering construction in marine has become a significant part of the strategy of national economy development,so the South China Sea has become one of the most important service environments for many marine equipment. However,the corrosion and failure of materials in the marine environment seriously threaten the service safety of engineering equipment. For various structural materials,marine corrosion will not only cause damage and loss of functions of various infrastructures,equipment and structures,shorten the service life of materials and structures,cause huge waste of resources,materials and energy,but also lead to sudden disasters and accidents,and even cause casualties. The South China Sea has a typical harsh marine environment. The environmental characteristics of high temperature,high humidity,high salt,and high sunlight radiation all year round make the non-ferrous metals serving here extremely corrosive,which often causes losses that cannot be ignored. Nonferrous materials have various types with different electrode potential,crystal structure and surface properties,so they have different corrosion characteristics and development laws. For example,aluminum and its alloys are relatively corrosion resistant due to the existence of dense oxide film on its surface,and the main corrosion form is pitting corrosion. The magnesium and its alloy have poor corrosion resistance due to the low electrode potential of magnesium and their corrosion is a dynamic process from pitting corrosion to uniform corrosion;Titanium alloy has strong corrosion resistance,and its performance is mainly affected by biological fouling. Nickel based alloys have high corrosion potential and strong corrosion resistance in the South China Sea environment,and their main corrosion in seawater is pitting corrosion.On the other hand,the corrosion behavior of the same metal in different marine environmental zones is also different.The marine environment can be divided into five zones,namely,marine atmospheric zone,spray splash zone,tidal range zone,seawater immersion zone and sea mud zone. Among them,the marine atmospheric area is the main service environment for non-ferrous metals,and the non-ferrous metal corrosion in this environment is under the collaborative control of land atmosphere,sea salt particles,solar radiation and other factors. The metal materials in the spray splash area have the most serious corrosion due to the alternating dry and wet environment.The corrosion of metals in tidal range area is relatively light due to the effect of seawater tide. The metal corrosion in seawater immersion area is mainly controlled by dissolved oxygen concentration,salinity,temperature and other factors in seawater,while the metal corrosion in sea mud area is mainly caused by microorganisms. According to the research status of corrosion behavior of various nonferrous metals in the South China Sea environment,this review analyzed the corrosion characteristics,rules and hidden dangers of aluminum,titanium,copper,magnesium,nickel,zinc and their alloys in the specific environmental zone of the South China Sea,and summarized the corrosion protection measures of aluminum,titanium,copper,magnesium applicable to the special environmental conditions of the South China Sea. At the same time,some deficiencies in the current research on the corrosion of nonferrous metals in the South China Sea environment were pointed out: 1) For the explanation of metal corrosion mechanism,most of them only focused on the external environmental factors,and there was a lack of in-depth and extensive research on the reasons that metal body was easy to induce certain corrosion forms,such as crystal structure,alloy composition and so on. 2) The corrosion research mainly focused on the marine atmospheric area,and there was little research on the corrosion behavior in the deep-sea environment,so a complete system could not be formed. In the future,the application of nonferrous metals and their alloys was expected to further develop in the deep-sea field,and the research on their deep-sea corrosion mechanism had far-reaching significance for the development of deep-sea engineering. 3) There was a lack of research on anti-corrosion strategies for tropical marine environment. Most non-ferrous metal marine anti-corrosion technologies were tested in simulated seawater,and their anti-corrosion life in the extreme marine environment of the South China Sea might be shortened or even invalid.Therefore,it was necessary to strengthen the research on nonferrous metal anti-corrosion strategies for the tropical marine climate of the South China Sea,and conducted inspection in the real sea environment to obtain more accurate results.
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| GB/T 7714-2015 | [1] Yahui Geng, Quantong Jiang, Xiaofan Zhai, et al. Corrosion Rules and Protection Measures of Nonferrous Metals in Environment of South China Sea[J]. Chinese Journal of Rare Metals, 2025, 49(2): 271-290. DOI:10.13373/j.cnki.cjrm.XY22110037. |
| MLA | [1] Yahui Geng, et al., "Corrosion Rules and Protection Measures of Nonferrous Metals in Environment of South China Sea." Chinese Journal of Rare Metals, vol. 49, no. 2, 2025, pp. 271-290, https://doi.org/10.13373/j.cnki.cjrm.XY22110037. |
| APA | [1] Yahui Geng, Quantong Jiang, Xiaofan Zhai, Ruiyong Zhang, Jizhou Duan, & Baorong Hou. (2025). Corrosion Rules and Protection Measures of Nonferrous Metals in Environment of South China Sea. Chinese Journal of Rare Metals, 49(2), 271-290. https://doi.org/10.13373/j.cnki.cjrm.XY22110037 |
| IEEE | [1] Yahui Geng, Quantong Jiang, Xiaofan Zhai, Ruiyong Zhang, Jizhou Duan, and Baorong Hou, "Corrosion Rules and Protection Measures of Nonferrous Metals in Environment of South China Sea," Chinese Journal of Rare Metals, vol. 49, no. 2, pp. 271-290, 2025, doi: 10.13373/j.cnki.cjrm.XY22110037. keywords: {South China Sea;nonferrous;corrosion;anti-corrosion method} |
