GLASS FOR SEALING OF INTEGRATED MAGNETIC HEADS BASED ON SILICON SUBSTRATE Russian patent published in 1994 - IPC

FIELD: glass compositions for magnetic heads, more particularly for sealing of integrated heads based on a silicon substrate. SUBSTANCE: the glass comprises (wt % ): 15-20 B₂O₃; 22.8-35 ZnO; 15-21.5 GeO₂; 0.1-4 PbO; 0.2-5 Nb₂O₅; 22.2-30.5 V₂O₅; 3-6 Al₂O₃; 0.1-5 Bi₂O₃; 0.2-5 Ta₂O₅. No crystallization occurs on heating in glass and delamination occurs neither in the cast material nor in the filaments. EFFECT: improved resistance to crystallization. 2 tbl