Glass-ceramic article and method for its production

Details Glass-ceramic article and method for its production Glass-ceramic article and method for its production

1988-05-04

1991-01-15

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501 10, C03C 1002, C03C 1004

Patent

active

049853759

ABSTRACT:
A method for producing a glass-ceramic article, which comprises crystallizing a glass article consisting essentially of from 40 to 60% by weight of SiO.sub.2, from 13 to 19% by weight of Al.sub.2 O.sub.3, from 0 to 6% by weight of B.sub.2 O.sub.3, from 8 to 16% by weight of MgO, from 2 to 6% by weight of CaO, from 3 to 9% by weight of ZnO, from 5 to 12% by weight of TiO.sub.2, from 0 to 3% by weight of Li.sub.2 O+Na.sub.2 O+K.sub.2 O, from 0 to 3% by weight of P.sub.2 O.sub.5 and from 0 to 2% by weight of ZrO.sub.2.

REFERENCES:
patent: 3497366 (1970-02-01), Simmons
Chemical Abstract, vol. 90, No. 24, Jun. 1979, p. 285, No. 19139u, PL-A-97 072, (Zaklady Przemyslu Elektronicznego "Kazel").
Chemical Abstract, vol. 83, No. 3, Aug. 11, 1975, p. 243, No. 47221b, Columbus, Ohio, U.S.; & JP-A-74 105 815.
Chemical Abstract, vol. 107, No. 24, Dec. 14, 1987, pp. 277, No. 221968b, Columbus, Ohio; & JP-A-62 108 742.

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