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| Experimental Study on Applicability of Radar Absorbing Coating to Marine Atmospheric Environment |
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| DOI：10.7643/issn.1672-9242.2023.02.003 |
| KeyWord:stealth coating radar absorbing preparation physical properties electrical properties marine atmospheric environment |
| Author | Institution |
| SU Xing-tao |
Beijing Institute of Applied Meteorology, Beijing , China |
| SUN Jing-zhe |
Beijing Institute of Applied Meteorology, Beijing , China |
| ZHU Xiao-lei |
Beijing Institute of Applied Meteorology, Beijing , China |
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| Abstract: |
| The work aims to analyze the change rule of radar absorbing stealth coating in marine atmospheric environment. The conventional physical properties and electrical properties of the coating at different stages within 12 months were examined, including macroscopic morphology, metallographic morphology, microscopic properties, adhesion, impact strength and infrared spectrum. In terms of macroscopic morphology, the brightness and chromatic aberration of the coating increased. The brightness increased by 1.22 and the chromatic aberration increased by 2.91 within 12 months and the color turned green and blue. The loss of light firstly increased and then decreased, with the maximum value of 34% in the 9th month. The adhesion of the coating was nonlinear with the test time, and decreased by 18% in the 6th month and increased by 24% in the 12th month. The radar wave absorption curve was approximately in the shape of "U" within the frequency of 2-18 GHz, and the lowest reflectivity shifted to the low frequency direction with time. The overall change of metallographic morphology, microscopic properties, impact strength and infrared spectrum characteristics of the coating was not clear. Within 1 a, the natural marine atmospheric environment has a certain effect on the conventional physical and electrical properties of radar absorbing stealth coating. However, under the condition of relatively short test time, the effect of marine atmospheric environment on coating aging has not been fully demonstrated, which needs to be further analyzed in combination with longer-term test data. |
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