GLASS FOR SOLDERING Russian patent published in 1994 - IPC

Abstract SU 1640932 A1

FIELD: glass industry. SUBSTANCE: glass has the following components, wt. -% : P₂O₅ 42.9-63.0; B₂O₃ 0.01-0.5; Li₂O 1.4-2.1; Na₂O 0.01-0.8; K₂O 0.01-0.6; PbO 0.5-51.16; Sb₂O₅ 0.9-21.3; ZnO 0.01-12.1; Al₂O₃ 0.001-3.5; CuO 0.001-3.0. TCLE value of glass is (125-160) x α(125 - 160)·10^-7 1/degree, temperature of sharp edge partial melting is 350-390 C, time for the first symptoms crystallization is 50-120 min. Glass is used for making of magnetic heads for videorecording apparatus. EFFECT: decreased temperature of amorphous magnetic alloys soldering. 2 tbl

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SU 1 640 932 A1

Authors

Maksimov N.N.

Dates

1994-11-15—Published

1989-05-18—Filed