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Marine environment stealth/wave transmission integrated ceramic material and preparation method thereof
The invention relates to a marine environment stealth/wave transmission integrated ceramic material and a preparation method thereof. The marine environment stealth/wave transmission integrated ceramic material comprises a compact silicon nitride ceramic matrix and a metamaterial wave-absorbing layer, wherein the compact silicon nitride ceramic matrix and the metamaterial wave-absorbing layer areconnected into a whole so as to obtain the marine environment stealth/wave transmission integrated ceramic material. According to the invention, the transmittance at 2-512 MHz is greater than or equalto 90%, and the reflectivity attenuation at the X waveband is greater than or equal to -8 dB; the functions of low-frequency transmission and high-frequency stealth of radar electromagnetic waves arerealized, that is, the electromagnetic waves in the working frequency band of a radar antenna can pass through a guidance window in an almost lossless manner so as to ensure normal communication of anaval vessel; and the frequency selection of attenuated electromagnetic waves can be achieved in a high frequency band so as to achieve the broadband absorption of the electromagnetic waves.
本发明涉及一种海洋环境隐身/透波一体化陶瓷材料及其制备方法。包括致密氮化硅陶瓷基体和超材料吸波层,致密氮化硅陶瓷基体与超材料吸波层连接成一体，即得隐身/透波一体化陶瓷材料。在2‑512MHz透过率≥90％，在X波段的反射率衰减≥‑8dB。实现雷达电磁波在低频透过、高频隐身的功能，即在雷达天线工作频段内的电磁波可以近乎无损耗地通过制导窗口从而保证舰艇的正常通信；在高频段内能够对衰减的电磁波实现频率的选择，进而实现对电磁波的宽频带吸收。
Marine environment stealth/wave transmission integrated ceramic material and preparation method thereof
The invention relates to a marine environment stealth/wave transmission integrated ceramic material and a preparation method thereof. The marine environment stealth/wave transmission integrated ceramic material comprises a compact silicon nitride ceramic matrix and a metamaterial wave-absorbing layer, wherein the compact silicon nitride ceramic matrix and the metamaterial wave-absorbing layer areconnected into a whole so as to obtain the marine environment stealth/wave transmission integrated ceramic material. According to the invention, the transmittance at 2-512 MHz is greater than or equalto 90%, and the reflectivity attenuation at the X waveband is greater than or equal to -8 dB; the functions of low-frequency transmission and high-frequency stealth of radar electromagnetic waves arerealized, that is, the electromagnetic waves in the working frequency band of a radar antenna can pass through a guidance window in an almost lossless manner so as to ensure normal communication of anaval vessel; and the frequency selection of attenuated electromagnetic waves can be achieved in a high frequency band so as to achieve the broadband absorption of the electromagnetic waves.
本发明涉及一种海洋环境隐身/透波一体化陶瓷材料及其制备方法。包括致密氮化硅陶瓷基体和超材料吸波层,致密氮化硅陶瓷基体与超材料吸波层连接成一体，即得隐身/透波一体化陶瓷材料。在2‑512MHz透过率≥90％，在X波段的反射率衰减≥‑8dB。实现雷达电磁波在低频透过、高频隐身的功能，即在雷达天线工作频段内的电磁波可以近乎无损耗地通过制导窗口从而保证舰艇的正常通信；在高频段内能够对衰减的电磁波实现频率的选择，进而实现对电磁波的宽频带吸收。
Marine environment stealth/wave transmission integrated ceramic material and preparation method thereof
一种海洋环境隐身/透波一体化陶瓷材料及制备方法
ZHANG PINGPING (author) / ZHU BAOXIN (author) / WANG HONGSHENG (author) / WEI QIHONG (author) / GE YING (author) / LUAN QIANG (author) / LI LING (author)
2020-05-08
Patent
Electronic Resource
Chinese
IPC:
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
C04B
Kalk
,
LIME
/
H01Q
Antennen
,
ANTENNAS, i.e. RADIO AERIALS
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