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The researchers proposed an efficient test method for simulating the different service environments of marine steel structures. The invention designed and manufactured the spray sputter erosion test machine, the tidal zone corrosion simulation experimental device and the full immersion zone reciprocating bending corrosion fatigue test machine to create a metal coating. The whole area marine environment corrosion behavior evaluation technology; systematically studied the corrosion behavior and failure mechanism of various metal coatings in the marine environment, and formulated the arc spray protection process scheme suitable for different zones.
According to the research team of the project team, the arc-sprayed aluminum-based coating technology can be widely applied to the coastal city infrastructure in the marine atmosphere and the corrosion protection of the marine parts of the marine metal structures, and it is more difficult to solve the electrochemical cathodic protection under the alternating wet and dry environment. Effective implementation, the organic paint film is easy to age, and the cost of the precious metal protective layer is too high. In addition, the aluminum-based coating itself has good seawater corrosion resistance, and it is also expected to be applied to underwater facilities and large offshore structures that are bothered by corrosion and biofouling. Antiseptic of the lower part.
It is understood that with the rise and development of marine industries such as maritime transportation, coastal tourism, port terminals, oil and gas development, seawater utilization, seawater desalination, etc., a large number of offshore metal structures need to be built, but due to the harsh corrosive environment of the ocean, ocean corrosion has been It is a major problem that plagues the development of the ocean.
Arc spraying technology for marine engineering safety
The long-term protective coating design and application project for marine engineering structure completed by Dr. Zhao Weimin of China University of Petroleum (East China) has recently passed the expert appraisal organized by the Science and Technology Department of Shandong Province. The results of the project have been proved by field tests and applications, which can significantly improve the safety of offshore engineering structures. The arc spraying technology developed by the project team is mature, the equipment is perfect, the construction cost is low, and the anti-corrosion effect is good.