Absorbing materials that absorb electromagnetic energy play an important role in preventing electromagnetic pollution and electromagnetic reflection. The reporter was informed on the 14th that the research team of Professor Zhang Tao of Harbin Institute of Technology (Weihai) recently discovered a lightweight, high temperature absorbing new material with a density of only 15 mg per cubic centimeter, which is the lightest of the known ceramic materials. The study was published in the journal Carbon Materials. According to Professor Zhang Tao, the first author of the achievement and the School of Materials Science and Engineering of Harbin Institute of Technology (Weihai), this new absorbing material can greatly reduce the burden on aircraft and ships. “Taking the U-2 aircraft as an example, its suction The wave agent is carbonyl iron powder, which accounts for more than 50% of the weight of the coating. If the new material discovered this time is used for stealth and shielding, its proportion of coating weight will be reduced to less than 10%.†The hexagonal BCN ternary compound ceramic designed and synthesized by the precursor molecule has unique micro-nano structure and composition design, which has excellent absorbing properties in different electromagnetic bands (S, K and other bands). Its absorbing band has adjustable characteristics. In addition, the ternary compound material having a micro-nano-porous structure has super-hydrophobic properties and can float on the water surface without any shape design. This new ternary material can meet the requirements of modern, absorbing materials “thin, light, wide and strongâ€. It has found important value for the development and application of a new generation of high temperature resistant, all weather and ultra light absorbing materials. . In the future, it will be used as a coating material for high Mach number stealth aircraft, coating materials for high-voltage transmission stations and high-power servers to prevent electromagnetic pollution and signal interference.
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