SiC ceramic connecting piece prepared from high-entropy multiphase ceramic connecting powder and method and application of SiC ceramic connecting piece

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SiC ceramic connecting piece prepared from high-entropy multiphase ceramic connecting powder and method and application of SiC ceramic connecting piece

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GUO WEIMING / CHEN XIUBING / HE SHENGJIN / ZHAN CHUANGTIAN / LIN HUATAI

The invention belongs to the technical field of ceramic connection, and discloses a SiC ceramic connecting piece prepared from high-entropy multiphase ceramic connecting powder and a method and application of the SiC ceramic connecting piece. The method comprises the steps that five or more metal carbide powder and SiC powder are mixed and then dried to obtain a connecting material, the connecting surface of SiC ceramic is coated with the connecting powder, a ceramic-connecting powder-ceramic sandwich structure is formed in an attached mode, a prefabricated connecting piece is placed in a vacuum or inert atmosphere under the assistance of ultrasonic waves, the temperature is raised to 1200-1500 DEG C, heat preservation is conducted, induction connection is conducted, and the metal carbide powder-SiC ceramic composite material is obtained. And preparing the SiC ceramic connecting piece. The bending strength of the ceramic connecting piece at the room temperature is 400-540 MPa, and the bending strength of the ceramic connecting piece at the temperature of 800-1000 DEG C is 340-450 MPa. The material can be widely applied to the fields of thermal protection structures of the automobile industry and aerospace vehicles or cladding materials of nuclear fission and nuclear fusion and the like.

本发明属于陶瓷连接技术领域，公开了一种高熵复相陶瓷连接粉体制备SiC陶瓷连接件及其方法和应用。该方法是将五种及以上金属碳化物粉体和SiC粉体混合后干燥得到连接材料，将连接粉体涂覆于SiC陶瓷连接表面，贴合形成“陶瓷‑连接粉体‑陶瓷”三明治结构，在超声辅助下将预制连接件置于真空或惰性气氛中升温至1200～1500℃保温进行感应连接，制得SiC陶瓷连接件。该陶瓷连接件在室温下的弯曲强度为400～540MPa，在800～1000℃下的弯曲强度为340～450MPa。可广泛应用于汽车行业、航空航天器的热防护结构或核裂变、核聚变的包壳材料等领域。

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Title :

SiC ceramic connecting piece prepared from high-entropy multiphase ceramic connecting powder and method and application of SiC ceramic connecting piece

Additional title:

一种高熵复相陶瓷连接粉体制备SiC陶瓷连接件及其方法和应用

Contributors:

GUO WEIMING (author) / CHEN XIUBING (author) / HE SHENGJIN (author) / ZHAN CHUANGTIAN (author) / LIN HUATAI (author)

Publication date :

2024-04-16

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Chinese

Classification :

IPC:

C04B Kalk , LIME / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B64C AEROPLANES , Flugzeuge / B64G Raumfahrt , COSMONAUTICS / G21C NUCLEAR REACTORS , Kernreaktoren