Glass-ceramic composite

Details Glass-ceramic composite Glass-ceramic composite

1992-02-25

1994-10-18

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 9, 501 67, 501 70, C03C 1400

Patent

active

053568419

ABSTRACT:
The invention provides a glass-ceramic composite with sufficient strength and other excellent properties suitable for IC packages or multilayer substrates. The glass-ceramic composite of the invention includes crystallized glass and at least either of alumina and mullite at the ratio by weight of eighty through fifty-five to twenty through forty-five. The crystallized glass includes cordierite as primary crystals and contains 40 to 52 percent by weight of silicon dioxide or SiO.sub.2, 27 to 37 percent by weight of aluminum oxide or Al.sub.2 O.sub.3, 11 to 13 percent by weight of magnesium oxide or MgO, 2 to 8 percent by weight of diboron trioxides or B.sub.2 O.sub.3, 2 to 8 percent by weight of calcium oxide or CaO, and 0.1 to 3 percent by weight of zirconium oxide or ZrO.sub.2.

REFERENCES:
patent: 4624934 (1986-11-01), Kokubu et al.
patent: 4655864 (1987-04-01), Rellick
patent: 4755490 (1988-07-01), DiLazzero
patent: 4855259 (1989-08-01), Claussen et al.
patent: 4997795 (1991-03-01), Hang et al.
patent: 5045402 (1991-09-01), Adams, Jr. et al.

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