Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Connecting method of ZrB2-based ceramic
The invention belongs to the technical field of connection of inorganic composite materials, and relates to a connection method of ZrB2-based ceramic. A spark plasma sintering method is adopted to connect ZrB2-SiC ceramics, and Ni powder is used as brazing filler between the ceramics. In the spark plasma sintering connection process, Ni diffuses in a ceramic body and reacts with ceramic matrix components, and the characteristic of local heating of a spark plasma sintering method is combined; the problems of long connection time and non-uniform element distribution of a connector joint area aresolved, the connection time is remarkably shortened, the element distribution of the obtained ZrB2-SiC/Ni/ZrB2-SiC ceramic joint is uniform, and the mechanical property of the joint is good. In the technological process, the environment temperature borne by the ceramic matrix is relatively low, and growth of crystal grains of the ceramic matrix is slowed down; the spark plasma sintering connection method has the characteristic of plasma electric field diffusion, element diffusion is effectively promoted, and Ni and ceramic matrix components are uniformly distributed. Through the method, the structural integrity of the joint is improved, and the mechanical property of the structure is improved.
本发明属于无机复合材料连接技术领域，涉及一种ZrB2基陶瓷的连接方法。本发明采用放电等离子烧结法连接ZrB2‑SiC陶瓷，陶瓷间利用Ni粉作为钎焊填料。放电等离子烧结连接过程中，Ni在陶瓷集体中发生扩散并与陶瓷基体成分发生反应，结合放电等离子烧结法局部加热的特性，克服了连接时间长和连接件接头区域元素分布不均匀的问题、显著缩短了连接时长、得到的ZrB2‑SiC/Ni/ZrB2‑SiC陶瓷接头元素分布较均匀、接头力学性能良好。工艺过程中，陶瓷基体承受的环境温度相对较低，减缓了其晶粒的长大；放电等离子烧结连接方法具有等离子电场扩散的特点，有效促进了元素的扩散并使得Ni与陶瓷基体成分分布均匀。通过该方法提升了接头的结构完整性，提高了结构的力学性能。
Connecting method of ZrB2-based ceramic
The invention belongs to the technical field of connection of inorganic composite materials, and relates to a connection method of ZrB2-based ceramic. A spark plasma sintering method is adopted to connect ZrB2-SiC ceramics, and Ni powder is used as brazing filler between the ceramics. In the spark plasma sintering connection process, Ni diffuses in a ceramic body and reacts with ceramic matrix components, and the characteristic of local heating of a spark plasma sintering method is combined; the problems of long connection time and non-uniform element distribution of a connector joint area aresolved, the connection time is remarkably shortened, the element distribution of the obtained ZrB2-SiC/Ni/ZrB2-SiC ceramic joint is uniform, and the mechanical property of the joint is good. In the technological process, the environment temperature borne by the ceramic matrix is relatively low, and growth of crystal grains of the ceramic matrix is slowed down; the spark plasma sintering connection method has the characteristic of plasma electric field diffusion, element diffusion is effectively promoted, and Ni and ceramic matrix components are uniformly distributed. Through the method, the structural integrity of the joint is improved, and the mechanical property of the structure is improved.
本发明属于无机复合材料连接技术领域，涉及一种ZrB2基陶瓷的连接方法。本发明采用放电等离子烧结法连接ZrB2‑SiC陶瓷，陶瓷间利用Ni粉作为钎焊填料。放电等离子烧结连接过程中，Ni在陶瓷集体中发生扩散并与陶瓷基体成分发生反应，结合放电等离子烧结法局部加热的特性，克服了连接时间长和连接件接头区域元素分布不均匀的问题、显著缩短了连接时长、得到的ZrB2‑SiC/Ni/ZrB2‑SiC陶瓷接头元素分布较均匀、接头力学性能良好。工艺过程中，陶瓷基体承受的环境温度相对较低，减缓了其晶粒的长大；放电等离子烧结连接方法具有等离子电场扩散的特点，有效促进了元素的扩散并使得Ni与陶瓷基体成分分布均匀。通过该方法提升了接头的结构完整性，提高了结构的力学性能。
Connecting method of ZrB2-based ceramic
一种ZrB2基陶瓷的连接方法
JIN XIAOCHAO (Autor:in) / LI PAN (Autor:in) / FAN XUELING (Autor:in) / YAN XIAOJIE (Autor:in) / JI XINKUO (Autor:in)
29.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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