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Silicon nitride-silicon carbide porous ceramic wave-absorbing material and preparation method thereof
The invention provides a silicon nitride-silicon carbide porous ceramic wave-absorbing material, the silicon nitride-silicon carbide porous ceramic wave-absorbing material comprises a Si3N4 matrix wave-transparent phase and a SiC wave-absorbing phase, and the preparation raw materials of the silicon nitride-silicon carbide porous ceramic wave-absorbing material comprise a silicon source and a catalyst; in the silicon nitride-silicon carbide porous ceramic wave-absorbing material, the content of the wave-transparent phase of the Si3N4 matrix is 50-70 wt%. The invention also provides a preparation method of the silicon nitride-silicon carbide porous ceramic wave-absorbing material. According to the silicon nitride-silicon carbide porous ceramic wave-absorbing material and the preparation method thereof provided by the invention, the added pore-forming agent reduces reflection of electromagnetic waves on the surface of the material, so that more electromagnetic waves can enter the material to be absorbed and attenuated, and the added catalyst enhances polarization loss of a Si3N4-SiC porous ceramic interface, so that the performance of the material is improved. And the electromagnetic wave absorption performance is further improved.
本发明提供一种氮化硅‑碳化硅多孔陶瓷吸波材料，所述氮化硅‑碳化硅多孔陶瓷吸波材料包括Si3N4基体透波相和SiC吸波相，所述氮化硅‑碳化硅多孔陶瓷吸波材料的制备原料包括硅源和催化剂；在所述氮化硅‑碳化硅多孔陶瓷吸波材料中，所述Si3N4基体透波相的含量为50‑70wt％。本发明还提供了一种如上所述的氮化硅‑碳化硅多孔陶瓷吸波材料的制备方法。本发明提供的一种氮化硅‑碳化硅多孔陶瓷吸波材料及其制备方法，加入的造孔剂降低了电磁波在材料表面的反射，使更多的电磁波能进入材料内部而被吸收衰减，加入的催化剂增强了Si3N4‑SiC多孔陶瓷界面极化损耗，进一步提升了电磁波吸收性能。
Silicon nitride-silicon carbide porous ceramic wave-absorbing material and preparation method thereof
The invention provides a silicon nitride-silicon carbide porous ceramic wave-absorbing material, the silicon nitride-silicon carbide porous ceramic wave-absorbing material comprises a Si3N4 matrix wave-transparent phase and a SiC wave-absorbing phase, and the preparation raw materials of the silicon nitride-silicon carbide porous ceramic wave-absorbing material comprise a silicon source and a catalyst; in the silicon nitride-silicon carbide porous ceramic wave-absorbing material, the content of the wave-transparent phase of the Si3N4 matrix is 50-70 wt%. The invention also provides a preparation method of the silicon nitride-silicon carbide porous ceramic wave-absorbing material. According to the silicon nitride-silicon carbide porous ceramic wave-absorbing material and the preparation method thereof provided by the invention, the added pore-forming agent reduces reflection of electromagnetic waves on the surface of the material, so that more electromagnetic waves can enter the material to be absorbed and attenuated, and the added catalyst enhances polarization loss of a Si3N4-SiC porous ceramic interface, so that the performance of the material is improved. And the electromagnetic wave absorption performance is further improved.
本发明提供一种氮化硅‑碳化硅多孔陶瓷吸波材料，所述氮化硅‑碳化硅多孔陶瓷吸波材料包括Si3N4基体透波相和SiC吸波相，所述氮化硅‑碳化硅多孔陶瓷吸波材料的制备原料包括硅源和催化剂；在所述氮化硅‑碳化硅多孔陶瓷吸波材料中，所述Si3N4基体透波相的含量为50‑70wt％。本发明还提供了一种如上所述的氮化硅‑碳化硅多孔陶瓷吸波材料的制备方法。本发明提供的一种氮化硅‑碳化硅多孔陶瓷吸波材料及其制备方法，加入的造孔剂降低了电磁波在材料表面的反射，使更多的电磁波能进入材料内部而被吸收衰减，加入的催化剂增强了Si3N4‑SiC多孔陶瓷界面极化损耗，进一步提升了电磁波吸收性能。
Silicon nitride-silicon carbide porous ceramic wave-absorbing material and preparation method thereof
一种氮化硅-碳化硅多孔陶瓷吸波材料及其制备方法
HUANG ZHENGREN (Autor:in) / ZHANG HUIHUI (Autor:in) / WU HAIBO (Autor:in) / YUAN MING (Autor:in) / YAO XIUMIN (Autor:in) / LIU XUEJIAN (Autor:in) / CHEN ZHONGMING (Autor:in)
01.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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