Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Metal solid-phase diffusion bonding method, ceramic connecting piece prepared by method, and application of ceramic connecting piece
The invention belongs to the technical field of ceramic connection, and discloses a metal solid-phase diffusion connection method and application thereof. The method includes: placing a high-temperature-resistant active metal serving as a connection material between polished SiC or Si3N4 ceramic connected with the surface of a base material and doped with a liquid-phase sintering aid to form a sandwich structure, wherein the liquid-phase sintering aid is Al2O3-Re2O3; and under a protective atmosphere, mechanically pressurizing the sandwich structure at an air pressure of 10-10<5>Pa, and sintering at 1200-1500 DEG C to obtain the SiC or Si3N4 ceramic connecting piece. According to the invention, after connection, the thickness of the middle layer is 10-100 [mu]m, the shear strength of the connecting piece at room temperature is 60-150 MPa, the shear strength of the connecting piece at 1200 DEG C is 50-100 MPa, and the ceramic joint can be applied to the fields of aerospace and nuclear energy.
本发明属于陶瓷连接技术领域，公开了一种金属固相扩散连接方法及其应用，该方法是将连接材料耐高温活性金属放置于连接母材表面抛光的掺杂液相烧结助剂的SiC或Si3N4陶瓷之间，形成三明治结构；所述液相烧结助剂为Al2O3‑Re2O3；在保护气氛下，将三明治结构经机械加压，气压为10～105Pa，在1200～1500℃烧结，制得SiC或Si3N4陶瓷连接件。连接后中间层厚度为10～100μm，连接件在室温下的剪切强度为60～150MPa，1200℃剪切强度为50～100MPa，该陶瓷接头可应用于航空航天和核能领域中。
Metal solid-phase diffusion bonding method, ceramic connecting piece prepared by method, and application of ceramic connecting piece
The invention belongs to the technical field of ceramic connection, and discloses a metal solid-phase diffusion connection method and application thereof. The method includes: placing a high-temperature-resistant active metal serving as a connection material between polished SiC or Si3N4 ceramic connected with the surface of a base material and doped with a liquid-phase sintering aid to form a sandwich structure, wherein the liquid-phase sintering aid is Al2O3-Re2O3; and under a protective atmosphere, mechanically pressurizing the sandwich structure at an air pressure of 10-10<5>Pa, and sintering at 1200-1500 DEG C to obtain the SiC or Si3N4 ceramic connecting piece. According to the invention, after connection, the thickness of the middle layer is 10-100 [mu]m, the shear strength of the connecting piece at room temperature is 60-150 MPa, the shear strength of the connecting piece at 1200 DEG C is 50-100 MPa, and the ceramic joint can be applied to the fields of aerospace and nuclear energy.
本发明属于陶瓷连接技术领域，公开了一种金属固相扩散连接方法及其应用，该方法是将连接材料耐高温活性金属放置于连接母材表面抛光的掺杂液相烧结助剂的SiC或Si3N4陶瓷之间，形成三明治结构；所述液相烧结助剂为Al2O3‑Re2O3；在保护气氛下，将三明治结构经机械加压，气压为10～105Pa，在1200～1500℃烧结，制得SiC或Si3N4陶瓷连接件。连接后中间层厚度为10～100μm，连接件在室温下的剪切强度为60～150MPa，1200℃剪切强度为50～100MPa，该陶瓷接头可应用于航空航天和核能领域中。
Metal solid-phase diffusion bonding method, ceramic connecting piece prepared by method, and application of ceramic connecting piece
一种金属固相扩散连接方法及其制得的陶瓷连接件和应用
HE SHENGJIN (Autor:in) / WU LIXIANG (Autor:in) / GUO WEIMING (Autor:in) / ZHAN CHUANGTIAN (Autor:in) / ZHU LINLIN (Autor:in) / LIN HUATAI (Autor:in)
11.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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