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Ultra-high-temperature ceramic composite material with broadband wave absorption and oxidation resistance and preparation method of ultra-high-temperature ceramic composite material
The invention discloses an ultrahigh-temperature ceramic composite material with broadband wave absorption and oxidation resistance and a preparation method of the ultrahigh-temperature ceramic composite material, and belongs to the technical field of wave absorption materials. The ultra-high-temperature ceramic composite material with the broadband wave absorption function and the oxidation resistance function is a ZrB2-BNNT/SiC-BNNT ceramic matrix composite material. The ZrB2-BNNT/SiC-BNNT ceramic-based composite material is prepared from the following components in percentage by volume: 70 to 95 percent of a ZrB2-BNNT high-temperature cracking product and 5 to 30 percent of a SiC-BNNT cross-linking product, wherein the boron nitride nanotubes are respectively inserted into ZrB2 particles in the ZrB2-BNNT high-temperature cracking product and SiC particles in the SiC-BNNT crosslinking product, and the ZrB2 particles and the SiC particles are arranged at intervals; heterogeneous interfaces exist in the ZrB2-BNNT/SiC-BNNT ceramic matrix composite material, and the heterogeneous interfaces comprise a BNNT/ZrB2 heterogeneous interface, a BNNT/SiC heterogeneous interface and a ZrB2/SiC heterogeneous interface. On the basis of ZrB2 and SiC prepared by a polymer conversion method, boron nitride nanotube dielectric network construction is performed on ZrB2 and SiC respectively, and then mixing is performed to obtain the ZrB2-BNNT/SiC-BNNT ultrahigh-temperature ceramic composite material with antioxidant and wave-absorbing capabilities, so that the selection of wave-absorbing materials in a high-temperature aerobic environment is widened.
本发明公开了一种兼具宽频吸波及抗氧化的超高温陶瓷复合材料及其制备方法，属于吸波材料技术领域。兼具宽频吸波及抗氧化的超高温陶瓷复合材料为ZrB2‑BNNT/SiC‑BNNT陶瓷基复合材料；以体积百分比计，ZrB2‑BNNT/SiC‑BNNT陶瓷基复合材料由70～95％的ZrB2‑BNNT高温裂解产物和5～30％的SiC‑BNNT交联产物制备而成；其中，氮化硼纳米管分别穿插于ZrB2‑BNNT高温裂解产物中的ZrB2颗粒和SiC‑BNNT交联产物中的SiC颗粒中，ZrB2颗粒和SiC颗粒相间排布；ZrB2‑BNNT/SiC‑BNNT陶瓷基复合材料中存在异质界面，异质界面包括BNNT/ZrB2异质界面、BNNT/SiC异质界面和ZrB2/SiC异质界面。在聚合物转化法制备的ZrB2与SiC的基础上，分别对其进行氮化硼纳米管介电网络构建后混合得到兼具抗氧化与吸波能力的ZrB2‑BNNT/SiC‑BNNT超高温陶瓷复合材料，拓宽了在高温有氧环境中对吸波材料的选择。
Ultra-high-temperature ceramic composite material with broadband wave absorption and oxidation resistance and preparation method of ultra-high-temperature ceramic composite material
The invention discloses an ultrahigh-temperature ceramic composite material with broadband wave absorption and oxidation resistance and a preparation method of the ultrahigh-temperature ceramic composite material, and belongs to the technical field of wave absorption materials. The ultra-high-temperature ceramic composite material with the broadband wave absorption function and the oxidation resistance function is a ZrB2-BNNT/SiC-BNNT ceramic matrix composite material. The ZrB2-BNNT/SiC-BNNT ceramic-based composite material is prepared from the following components in percentage by volume: 70 to 95 percent of a ZrB2-BNNT high-temperature cracking product and 5 to 30 percent of a SiC-BNNT cross-linking product, wherein the boron nitride nanotubes are respectively inserted into ZrB2 particles in the ZrB2-BNNT high-temperature cracking product and SiC particles in the SiC-BNNT crosslinking product, and the ZrB2 particles and the SiC particles are arranged at intervals; heterogeneous interfaces exist in the ZrB2-BNNT/SiC-BNNT ceramic matrix composite material, and the heterogeneous interfaces comprise a BNNT/ZrB2 heterogeneous interface, a BNNT/SiC heterogeneous interface and a ZrB2/SiC heterogeneous interface. On the basis of ZrB2 and SiC prepared by a polymer conversion method, boron nitride nanotube dielectric network construction is performed on ZrB2 and SiC respectively, and then mixing is performed to obtain the ZrB2-BNNT/SiC-BNNT ultrahigh-temperature ceramic composite material with antioxidant and wave-absorbing capabilities, so that the selection of wave-absorbing materials in a high-temperature aerobic environment is widened.
本发明公开了一种兼具宽频吸波及抗氧化的超高温陶瓷复合材料及其制备方法，属于吸波材料技术领域。兼具宽频吸波及抗氧化的超高温陶瓷复合材料为ZrB2‑BNNT/SiC‑BNNT陶瓷基复合材料；以体积百分比计，ZrB2‑BNNT/SiC‑BNNT陶瓷基复合材料由70～95％的ZrB2‑BNNT高温裂解产物和5～30％的SiC‑BNNT交联产物制备而成；其中，氮化硼纳米管分别穿插于ZrB2‑BNNT高温裂解产物中的ZrB2颗粒和SiC‑BNNT交联产物中的SiC颗粒中，ZrB2颗粒和SiC颗粒相间排布；ZrB2‑BNNT/SiC‑BNNT陶瓷基复合材料中存在异质界面，异质界面包括BNNT/ZrB2异质界面、BNNT/SiC异质界面和ZrB2/SiC异质界面。在聚合物转化法制备的ZrB2与SiC的基础上，分别对其进行氮化硼纳米管介电网络构建后混合得到兼具抗氧化与吸波能力的ZrB2‑BNNT/SiC‑BNNT超高温陶瓷复合材料，拓宽了在高温有氧环境中对吸波材料的选择。
Ultra-high-temperature ceramic composite material with broadband wave absorption and oxidation resistance and preparation method of ultra-high-temperature ceramic composite material
一种兼具宽频吸波及抗氧化的超高温陶瓷复合材料及其制备方法
LI HEJUN (author) / DAI MENGYU (author) / JIA YUJUN (author) / DENG YUMENG (author) / LIU SIJIAN (author) / REN BIN (author) / WANG XI (author) / LIN I-HSIANG (author) / CHENG JUNJIE (author)
2024-08-30
Patent
Electronic Resource
Chinese
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