A radar/infrared compatible invisible coating resistant to 600 DEG C and a preparing method thereof

Abstract

A radar / infrared compatible invisible coating resistant to 600 DEG C is disclosed. The invisible coating is on the surface of a metal substrate, and includes an adhesive layer, a 8YSZ-Al2O3 ceramic bottom layer, a high-temperature resistance coating, a 8YSZ isolating layer and a high-temperature conductor coating in order from bottom to top form the surface of the metal substrate. The high-temperature resistance coating and the high-temperature conductor coating are in paster forms, and pasters are arranged periodically. A preparing method of the invisible coating is also disclosed. The structure of the invisible coating has a radar / infrared compatible stealth function. A resistance type periodic structure is introduced so that the invisible coating has a good wave absorbing function, anda defect that traditional wave absorbing coatings need absorbents so as to cause unsatisfied wave absorbing performance, big influences on processes and instable performance is solved. A conductor periodic structure is introduced to the surface layer, and the radar / infrared compatible stealth function is achieved by utilizing a high reflectivity characteristic for the infrared waveband and a hightransmittance characteristic for the radar waveband.

Description

technical field [0001] The invention belongs to the field of radar and infrared compatible stealth materials, in particular to a radar / infrared compatible stealth coating capable of withstanding a temperature of 600°C and a preparation method thereof. Background technique [0002] With the development of radar and infrared composite detection and guidance technology, materials with radar / infrared compatible stealth functions have become an important research direction. However, there are inherent contradictions in achieving radar / infrared compatible stealth with the same material. The reason is that radar stealth requires materials with strong absorption and low reflection of electromagnetic waves, while infrared stealth requires materials with low absorption and high reflection of electromagnetic waves. Therefore, how to solve the contradiction between the two through material structure design is the key to realize radar / infrared compatible stealth. At the same time, with ...

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Problems solved by technology

[0003] Chinese Patent No. ZL201110053460.7, Chinese Patent No. ZL201110052115.1, Chinese Patent No. ZL201210139046.2, and Chinese Patent No. ZL201410128311.6 disclose several continuous fiber-reinforced ceramic-based wave-absorbing composite materials and their preparation methods. This kind of wave-absorbing composite material has good wave-absorbing performance and temperature resistance, but it does not have infrared stealth performance

At the same time, the patents disclosed above are all structural high-temperature stealth materials. Although they have good load-bearing properties, the mechanical properties of these materials still have a certain gap from metal materials, and it is difficult to use them as main load-bearing parts, and the cost is relatively higher

Compared with structural high-temperature stealth materials, high-temperature stealth coatings have the advantages of low cost and convenient construction, and have broad application prospects. However, there has not been any application of high-temperature stealth coatings in the field of radar and infrared compatible stealth materials.

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