| 摘要 |
1,144,285. Ferrite to glass slats. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 9 Feb., 1967, No. 6298/67. Heading C1M. [Also in Divisions G5 and H1] In a process for uniting two sintered ferrite bodies with glass, faces 20 and 21 of both bodies are first lapped and polished, a spacer strip 22 of Ti is deposited on one of the bodies, the two bodies are assembled together, glass fibres 18, 19 (e.g. 0À1-0À5 mm. in diameter) are placed as shown, and the assembly is heated in N 2 e.g. at 750‹ C or 900‹ C., to melt the glass which fills the gaps between the adjacent faces. Suitable glass compositions are (in % by wt.):- (a) (b) (c) SiO 2 .. .. . 22À5 56À2 70À9 Na 2 O .. .. . 21À0 7À6 16À4 K 2 O .. .. . 4À5 1À0 PbO .. .. . 30À0 Al 2 O 3 .. .. . 1À2 0À5 Sb 2 O 3 .. .. . 0À3 0À3 MnO .. .. 0À2 CaO .. .. 5À0 BaO .. .. . 2À0 MgO .. .. 3À9 B 2 O 3 .. .. 56-5 |
