The ocean is rich in resources, exploring and developing the ocean resources has important economic value and strategic significance. In recent years, China and Pakistan have attached great importance to the development of Marine resources, and in 2015 signed a protocol to jointly build a "China-Pakistan Joint Marine research Center" to promote practical cooperation between the two sides in the field of materials science and technology and ocean engineering. The sea, equipment first. The Marine environment of the South China Sea and the Pakistan-Arabian Sea is very similar (high heat, high humidity, high salt), and the Marine engineering equipment and components are facing serious corrosion and fouling problems in service, causing huge economic losses. How to improve the service performance and extend the service life of Marine equipment and materials in China and Brazil is a major common problem to be solved urgently in the Marine industry of the two countries, and the development of new high-performance integrated metal coating technology with anti-corrosion and anti-pollution functions is a research hotspot of both sides.
The key scientific problems to be solved in this project are: 1) pitting mechanism of amorphous coatings in high humidity and high heat ocean environment; 2) Controlled injection and release of anti-fouling elements and anti-fouling mechanism of amorphous coating; 3) Anti-fouling mechanism of textured amorphous composite coating. The proposed technical route is as follows: composition design of antifouling and corrosion resistant amorphous coating, controlled injection and controlled release of antifouling elements of amorphous coating, preparation and characterization of textured superhydrophobic amorphous coating, structural characterization/regulation and service performance test of amorphous coating, pitting mechanism analysis of amorphous coating, antifouling performance characterization and fouling mechanism analysis of amorphous coating.
In order to solve the above scientific problems, the cooperation project proposed to jointly develop 1-2 new anti-corrosion and anti-fouling function integrated amorphous coating material technology for applications in high humid and hot Marine environment, in-depth analysis of microbial and other factors on the corrosion and fouling behavior of amorphous coating, and reveal its corrosion mechanism; The effects of chemical composition, nanocrystallization and surface structure on corrosion and fouling properties of amorphous coatings are described. To evaluate the feasibility of the new Fe-based amorphous coating developed in the field of Marine engineering in the two countries. The cooperative research includes: (1) composition design and preparation of amorphous coatings with integrated anti-corrosion and anti-fouling functions; (2) Structural characterization and control of anti-corrosion and anti-fouling amorphous coatings; (3) Research on mechanical properties, corrosion properties and microbial fouling properties of amorphous coatings; (4) Design of textured amorphous composite coatings and study on corrosion damage performance.
The Chinese team in this project is the Amorphous Materials Laboratory of Huazhong University of Science and Technology, which is one of the earliest research groups engaged in the research of amorphous coating technology in China, and has profound work accumulation in the design of amorphous coating system and coating preparation technology. The partner is the Thermal Spraying Laboratory of the Institute of Space Technology, Islamabad, Pakistan (team PI is Dr. Yasir, who graduated from the Chinese research team in 2016), and the team has been engaged in the research of thermal spraying coating technology. Funded by Pakistan Higher Education Commission Fund project, China-Pakistan National Natural Science Foundation cooperation project and many other coating related projects, it has advantages in coating preparation technology, corrosion testing and mechanism analysis.
The expected new theoretical results of this project include: composition design theory of anti-fouling and antifouling amorphous coatings; The mechanism by which superhydrophobic and antifouling agents cooperate to improve the anti-fouling performance of amorphous coatings. The expected achievements in new methods include: key techniques for the preparation of textured amorphous coatings; Key technology of low surface energy amorphous coating; Superhydrophobic - antifouling agent synergistic surface coating technology. The expected number of results included: 10 articles published in international journals; 4 national invention patents were declared. The integrated coating technology of high durability anticorrosion and antifouling developed by this project is expected to significantly reduce economic losses caused by Marine corrosion or fouling; At the same time, it will strengthen the exchanges between scholars of the two countries, enhance the international influence of China's anti-corrosion and antifouling coating materials research, promote the technological innovation cooperation and technology transfer of advanced materials between China and Pakistan, serve the science and technology diplomacy between the Chinese and Pakistani governments, and promote the construction of China's "Belt and Road".
According to the characteristics of the project, the main data generation sources of the research and development process are the study of the microbial corrosion mechanism of the amorphous coating, the composition design and preparation technology of the amorphous coating with integrated anti-corrosion and anti-fouling functions, the structural characterization and performance control of the amorphous coating with anti-fouling and anti-fouling structure, the design of the amorphous composite coating with textured structure and the study of corrosion and fouling performance.
