I. Research, Development and Application of Steel Materials for High-end Marine Equipment

Marine engineering construction is an important support for the country's implementation of the strategy of building a maritime power. The steel used in these projects is mainly applied in areas such as offshore oil and gas exploitation, offshore wind power generation, shipbuilding, and artificial reef construction. These materials are exposed to harsh environments with wind, waves, currents, and corrosion for long periods, and extremely stringent requirements are imposed on their performance. Key materials for special parts still need to be imported. In particular, key technologies such as ultra-high strength, low-temperature resistance, corrosion resistance, and large-line-energy weldability urgently need to be broken through.

II. Wear- and Corrosion-Resistant Materials in Extreme Environments and Additive Manufacturing

In view of the current situation where a large number of high-end equipment components in fields such as marine engineering, rail transit, petroleum, chemical industry, metallurgy, and mining fail due to the interactive effects of severe corrosion, wear, and erosion, and there is a need to extend their service life through surface strengthening, this research direction has long been committed to the integrated collaborative development and engineering application of wear-resistant, corrosion-resistant, and heat-resistant materials, equipment, processes, and performance.

III. Marine Materials and Protection Technologies

Closely focusing on the strategic needs of national security and the development and utilization of marine resources, in order to meet the multifunctional protection requirements of long-term anti-fouling, intelligent repair, electromagnetic stealth, etc. of functional coatings, key materials that are bottleneck problems are developed. Through surface and interface regulation methods such as material compounding, a relatively complete research system of marine functional materials and protection technologies is gradually expanded and formed. New technologies for microbial corrosion prevention and biological antibacterial effects are developed, as well as new optoelectronic functional materials and their seawater repair technologies, and new technologies for detecting pollutants resistant to seawater interference and underwater electric field sensors.

IV. Marine Energy Storage and Conversion Materials

Guided by the needs of underwater submersibles, power supply for island areas, and the development of new marine energy sources, high-performance large-scale energy storage materials, green marine energy extraction and conversion materials, and multifunctional solar energy collection and conversion materials are developed. The multi-directional intersection and integration of energy storage materials, seawater hydrogen energy catalytic materials, and photovoltaic materials are achieved, and a research chain for efficient collection, storage, and conversion of marine energy is established. A series of progress has been made in key issues urgently needed by the country and society, such as clean energy supply systems for island areas, underwater energy replenishment systems for submersibles, and the social application of green hydrogen energy.