Crystallizing glass solders and stripping films with such glass

Details Crystallizing glass solders and stripping films with such glass Crystallizing glass solders and stripping films with such glass

1984-01-23

1985-05-07

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 4, 501 7, 501 22, 501 23, 501 59, 501 61, 501 62, 501 66, 501 75, 501 77, C03C 702, C03C 322, C03C 310, C03C 304

Patent

active

045158975

ABSTRACT:
Partially crystallizing glass solders, and stripping films using them as agents to be transferred, which are sintered at temperatures below 900.degree. C. from glass powder with granulation of less than <150 .mu.m, thereafter exhibiting thermal expansion coefficients of -23.5 to 34.3.sup..multidot. 10.sup.-7.multidot. K.sup.-1, whose crystallization temperature lies below 710.degree. C. and whose crystal phase consists predominantly of h-quartz mixed crystal phase exhibiting the following composition (in weight %): 23-44 SiO.sub.2, 20-37 Al.sub.2 O.sub.3, 5.5-11 Li.sub.2 O; 3-20 B.sub.2 O.sub.3 ; 0-36 PbO; 0-1 Na.sub.2 O; 0-1.5 K.sub.2 O; 0-0.1 F; 0-4 TiO.sub.2 ; 0-3.5 MgO; 0-2 CoO, provided B.sub.2 O.sub.3 +PbO+Na.sub.2 O+K.sub.2 O+F+TiO.sub.2 is 8.5-50.0.

REFERENCES:
patent: 3463647 (1969-08-01), Kosiorek et al.
patent: 3503763 (1970-03-01), Mills
patent: 3907577 (1975-09-01), Kiefer et al.

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