COMPOSITION OF EASILY FUSIBLE GLASS CERAMIC MATERIAL Russian patent published in 2003 - IPC

FIELD: manufacture of gas-discharge indicator panels; soldering silicon plates in manufacture of integral sensors for protection of electron components and integrated circuits. SUBSTANCE: proposed composition contains the following components, mass-%: easily fusible glass, 44-83 and lead titanate, 17-56. Easily fusible glass includes the following components, mass-%: PbO, 72-92; B₂O₃, 5-20; Bi₂O₃, 01-18; PbF₂, 0.1-15; ZnO, 0.1-10; SiO₂, 0.1-3; Al₂O₃, 0.1-3; MnO, 0.1-2.0; CoO, 0.1-2.0; V₂O₅, 0.1-1.5. Junction forming temperature ranges from 390 to 465 C and temperature linear expansion coefficient of composition is equal to 83•10^-7 1/^°C at temperature 20-300 C. Proposed composition may additionally contain CuO in the amount of 0.1-3.0 mass-%. Proposed composition ensures reliable adhesion to substrate, thus enhancing mechanical strength and vacuum tightness of articles. EFFECT: enhanced efficiency; increased yield of articles. 2 cl, 2 tbl