Realizing microwave-infrared compatible stealth via single 8YSZ coating

Complex composition and structural design seriously restrict the practical application of high-temperature microwave-infrared compatible stealth coatings. To address this issue, it is proposed for the first time that the high-temperature microwave-infrared compatible stealth coatings of single 8 wt% yttria-stabilized zirconia (8YSZ) component. Originated from conductive, interfacial and dipole polarization losses, 8YSZ coating presents superior microwave absorbing properties at 900 ℃ including strong absorption (minimum reflection loss (RL_min): -50 dB), thin thickness (1.5 mm) and better effective absorption bandwidth (EAB: 2 GHz). Meanwhile, it maintains low infrared emissivity (ε:＜0.3) in the infrared bands of 3-5 μm compared with traditional materials. In contrast to conventional strategy that microwave-infrared compatible stealth materials are explored in the pool of “complex” multiple-component or metamaterial, this work reveals an avenue to look into materials with simple composition realizing microwave-infrared compatible stealth simultaneously, which would be of both scientific and technological significance in the fields of stealth technology. Meanwhile, the present work is opened up the new application of 8YSZ coating in the field of high-temperature stealth technology.