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Silicon carbide ceramic connecting piece and connecting method and application thereof
The invention belongs to the technical field of ceramic connection, and discloses a silicon carbide ceramic connecting piece and a connecting method and an application thereof, the method comprises the following steps: mixing mixed powder of SiC nano powder and a liquid-phase sintering aid with an organic solvent to obtain connecting brazing filler metal, and uniformly coating the connecting brazing filler metal between silicon carbide base materials for connection to obtain a primary connecting piece; and coating or immersing the precursor slurry in a connecting area of the primary connecting piece, curing in Ar or vacuum atmosphere at 100-300 DEG C, and cracking at 1000-1500 DEG C and 0.01-1 MPa to obtain the silicon carbide ceramic connecting piece. The thickness of a connector of the obtained connecting piece is 20-100 microns, the shear strength at the room temperature is 40-100 MPa, the shear strength at the temperature of 1200 DEG C is 45-120 MPa, and the leakage rate is 1 * 10<-13>-1*10<-9 > Pa.m<3>/s. The silicon carbide ceramic connecting piece can be applied to the fields of nuclear energy, aviation, spaceflight or military industry.
本发明属于陶瓷连接技术领域，公开了一种碳化硅陶瓷连接件及其连接方法和应用，该方法是将SiC纳米粉和液相烧结助剂的混合粉体与有机溶剂混合得到连接钎料，均匀涂覆在碳化硅母材之间进行连接，制得初步连接件；再将前驱体浆料涂覆或浸没于初步连接件的连接区域，在Ar或真空气氛中100～300℃固化，在1000～1500℃，0.01～1MPa裂解，得到碳化硅陶瓷连接件。所得连接件的接头厚度为20～100μm，室温剪切强度为40～100MPa，在1200℃的剪切强度为45～120MPa，泄漏率为1×10‑13～1×10～9Pa·m3/s。碳化硅陶瓷连接件可应用核能、航空、航天或军工等领域。
Silicon carbide ceramic connecting piece and connecting method and application thereof
The invention belongs to the technical field of ceramic connection, and discloses a silicon carbide ceramic connecting piece and a connecting method and an application thereof, the method comprises the following steps: mixing mixed powder of SiC nano powder and a liquid-phase sintering aid with an organic solvent to obtain connecting brazing filler metal, and uniformly coating the connecting brazing filler metal between silicon carbide base materials for connection to obtain a primary connecting piece; and coating or immersing the precursor slurry in a connecting area of the primary connecting piece, curing in Ar or vacuum atmosphere at 100-300 DEG C, and cracking at 1000-1500 DEG C and 0.01-1 MPa to obtain the silicon carbide ceramic connecting piece. The thickness of a connector of the obtained connecting piece is 20-100 microns, the shear strength at the room temperature is 40-100 MPa, the shear strength at the temperature of 1200 DEG C is 45-120 MPa, and the leakage rate is 1 * 10<-13>-1*10<-9 > Pa.m<3>/s. The silicon carbide ceramic connecting piece can be applied to the fields of nuclear energy, aviation, spaceflight or military industry.
本发明属于陶瓷连接技术领域，公开了一种碳化硅陶瓷连接件及其连接方法和应用，该方法是将SiC纳米粉和液相烧结助剂的混合粉体与有机溶剂混合得到连接钎料，均匀涂覆在碳化硅母材之间进行连接，制得初步连接件；再将前驱体浆料涂覆或浸没于初步连接件的连接区域，在Ar或真空气氛中100～300℃固化，在1000～1500℃，0.01～1MPa裂解，得到碳化硅陶瓷连接件。所得连接件的接头厚度为20～100μm，室温剪切强度为40～100MPa，在1200℃的剪切强度为45～120MPa，泄漏率为1×10‑13～1×10～9Pa·m3/s。碳化硅陶瓷连接件可应用核能、航空、航天或军工等领域。
Silicon carbide ceramic connecting piece and connecting method and application thereof
一种碳化硅陶瓷连接件及其连接方法和应用
ZHAN CHUANGTIAN (author) / HE SHENGJIN (author) / WU LIXIANG (author) / GUO WEIMING (author) / LIN HUATAI (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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