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SiC/AlN multiphase microwave attenuation ceramic, preparation method and application
The invention relates to the technical field of microwave attenuation materials, in particular to SiC/AlN complex-phase microwave attenuation ceramic as well as a preparation method and application thereof, and particularly relates to the SiC/AlN complex-phase microwave attenuation ceramic which is prepared by taking high-thermal-conductivity and high-insulation AlN as a matrix, beta-SiC with the conductivity of 10 <-5 >-101 S * cm < 1 > and alpha-SiC with the conductivity of 10 <-10 >-10 <-9 > S * cm < 1 > as attenuating agents together, the SiC/AlN complex-phase microwave attenuation ceramic is prepared by mixing the three materials and performing hot pressed sintering. By reasonably adjusting the adding proportion of beta-SiC and alpha-SiC in the mixed powder, electromagnetic parameters of the composite ceramic are regulated, controlled and optimized, and meanwhile, the thickness of the material is controlled, so that the composite ceramic obtains high microwave absorption capacity under different frequencies, the characteristics of high wave absorption and adjustable wave absorption frequency are shown, and the composite ceramic has a good application prospect. The effective absorption requirement of the AlN-based microwave attenuation ceramic on electromagnetic waves of different frequency bands is met.
本发明涉及微波衰减材料技术领域，具体涉及一种SiC/AlN复相微波衰减陶瓷、制备方法与应用，具体是以高导热、高绝缘AlN为基体，以电导率为10–5–101 S·cm−1的β‑SiC和电导率为10–10–10–9 S·cm−1的α‑SiC共同作为衰减剂，将三者混料后采用热压烧结制备的SiC/AlN复相微波衰减陶瓷。本发明通过合理调节混合粉料中β‑SiC和α‑SiC的添加比例，实现了复相陶瓷电磁参数的调控与优化，同时对材料厚度进行控制，使其在不同的频率下获得较强的微波吸收能力，表现出了强吸波且吸波频率可调特性，满足AlN基微波衰减陶瓷对不同频段电磁波的有效吸收需求。
SiC/AlN multiphase microwave attenuation ceramic, preparation method and application
The invention relates to the technical field of microwave attenuation materials, in particular to SiC/AlN complex-phase microwave attenuation ceramic as well as a preparation method and application thereof, and particularly relates to the SiC/AlN complex-phase microwave attenuation ceramic which is prepared by taking high-thermal-conductivity and high-insulation AlN as a matrix, beta-SiC with the conductivity of 10 <-5 >-101 S * cm < 1 > and alpha-SiC with the conductivity of 10 <-10 >-10 <-9 > S * cm < 1 > as attenuating agents together, the SiC/AlN complex-phase microwave attenuation ceramic is prepared by mixing the three materials and performing hot pressed sintering. By reasonably adjusting the adding proportion of beta-SiC and alpha-SiC in the mixed powder, electromagnetic parameters of the composite ceramic are regulated, controlled and optimized, and meanwhile, the thickness of the material is controlled, so that the composite ceramic obtains high microwave absorption capacity under different frequencies, the characteristics of high wave absorption and adjustable wave absorption frequency are shown, and the composite ceramic has a good application prospect. The effective absorption requirement of the AlN-based microwave attenuation ceramic on electromagnetic waves of different frequency bands is met.
本发明涉及微波衰减材料技术领域，具体涉及一种SiC/AlN复相微波衰减陶瓷、制备方法与应用，具体是以高导热、高绝缘AlN为基体，以电导率为10–5–101 S·cm−1的β‑SiC和电导率为10–10–10–9 S·cm−1的α‑SiC共同作为衰减剂，将三者混料后采用热压烧结制备的SiC/AlN复相微波衰减陶瓷。本发明通过合理调节混合粉料中β‑SiC和α‑SiC的添加比例，实现了复相陶瓷电磁参数的调控与优化，同时对材料厚度进行控制，使其在不同的频率下获得较强的微波吸收能力，表现出了强吸波且吸波频率可调特性，满足AlN基微波衰减陶瓷对不同频段电磁波的有效吸收需求。
SiC/AlN multiphase microwave attenuation ceramic, preparation method and application
一种SiC/AlN复相微波衰减陶瓷、制备方法与应用
YANG JIAN (author) / JIANG SENCHUAN (author) / FANG XIA (author) / LIANG YUQIANG (author) / PAN LIMEI (author) / LI XIAOYUN (author) / WANG YANG (author) / LI QUAN (author)
2024-03-12
Patent
Electronic Resource
Chinese
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