Glass powder for nickel-based high-temperature alloy sealing and preparation and use method thereof

The invention provides glass powder for nickel-based high-temperature alloy sealing and a preparation and use method of the glass powder. The glass powder comprises the following components in parts by weight: 40-55 parts of SiO2, 12.0 to 18.1 parts of B2O3, 5.0 to 7.6 parts of Al2O3, 3 to 6 parts of Li2O, 1.0 to 3.8 parts of K2O, 0.5 to 1.5 parts of TiO2, 12.0 to 19.0 parts of SrO, 9.0 to 16.0 parts of ZnO, and 4.5 to 8.0 parts of ZrO2. The preparation method comprises the following steps: uniformly mixing the raw materials, smelting in a 1450-1550 DEG C molybdenum silicide high-temperature electric furnace for 4-6 hours, completely melting and clarifying, pouring into cold water, quenching and cracking into broken glass slag, drying, carrying out ball milling, and screening to obtain thehigh-pressure-resistant sealing glass powder. The glass powder is subjected to high-temperature sealing and heat treatment to obtain the matched sealing device. The glass disclosed by the invention is high in sealing strengt