Method for preparing ceramic connecting piece through liquid phase extrusion strategy and application of ceramic connecting piece

The invention belongs to the technical field of ceramic connection, and discloses a method for preparing a ceramic connecting piece through a liquid phase extrusion strategy and application of the ceramic connecting piece. The method comprises the following steps: mixing a metal oxide with Al2O3-Re2O3, adding a solvent and a ball milling medium, and carrying out mixing, ball milling and drying to obtain connecting powder; mixing the connecting powder, an anti-precipitating agent and a solvent, and performing ultrasonic treatment to prepare connecting slurry; then spraying the connecting slurry on the surface of to-be-connected ceramic, stacking according to a ceramic-connecting slurry-ceramic sandwich structure, placing in connecting equipment, and carrying out sintering and heat preservation in an inert atmosphere at the pressure of 10-30MPa and the temperature of 1350-1550 DEG C for connection to obtain the ceramic connector. The high-temperature-resistant ceramic connecting piece is prepared by extruding a