Wave absorbing integrated material of gradient-pore type structure

Abstract

The invention discloses a wave absorbing integrated material of a gradient-pore type structure. The wave absorbing integrated material is composed of a base material, surface pores and a coating, and is characterized in that the pores are evenly formed in the surface of the base material, and the pore rate is increased along with the increase of the distance from the surface of the base material. The base material is carbon, or silicon carbide or a composite material formed by mixing the carbon and the silicon carbide, the depth of each pore is 1-10mm, the pores account for 5-40% of the area of the surface of the base material, the pores are parallel, or perpendicular to one another, or bent, the cross section of each pore is round, or irregular round, and the diameter of each pore is 0.1-1mm. The coating is a silicon carbide coating, or a silicon nitride coating, or an iron oxide coating, or a multi-layer coating or a trapezoid coating formed by two or more coatings, and the thickness of the coating is 10-100 micro meters. The wave absorbing integrated material has good wave absorbing performance and mechanical property.

Description

technical field [0001] The invention relates to a wave-absorbing material, in particular to a wave-absorbing integrated material with a gradient pore type mechanism. technical background [0002] After the end of World War II, stealth technology has been widely valued and researched as a major military technology. After the war, the world's military powers such as the United States, the Soviet Union, Britain, and France have all invested huge sums of money in research, and have made considerable progress. It can be said that the degree of development of stealth and anti-stealth technology has become one of the crucial factors for our army to win local wars under high-tech conditions in the future. Of course, in civilian applications, wave-absorbing materials are becoming more and more important. For example, at airports, aircraft flights are delayed due to electromagnetic interference; in hospitals, mobile phones often interfere with the normal operation of various electron...

AI Technical Summary

Problems solved by technology

However, most of the materials now either only have the function of absorbing waves and cannot be used as structural parts, or they are used as structural parts without the function of absorbing waves.