Glass solder for connecting transparent magnesium aluminate spinel ceramics and method for connecting transparent magnesium aluminate spinel ceramics

The invention discloses a glass solder for connecting transparent magnesium aluminate spinel ceramics and a method for connecting the transparent magnesium aluminate spinel ceramics, and belongs to the technical field of welding. The glass solder is composed of the following components in percentage by weight: 18-24% of CaO, 12-16% of Al2O3, 54-60% of SiO2, 1-4% of B2O3, 3-6% of R2O, and 1-6% of Y2O3. The connection method comprises the following steps: preparing glass solder powder by adopting a melting water quenching method; placing a glass solder between the two magnesium aluminate spinel ceramics to be welded; putting the assembled sample into a resistance furnace, heating to 1250-1400 DEG C, keeping the temperature for 20-30 minutes, and cooling at a speed higher than 15 DEG C/min; and putting the sample cooled to the room temperature into the resistance furnace again for annealing. According to the invention, the interface reaction between the glass solder and the ceramic base material and the crystall