Sol-gel derived SiO.sub.2 /oxide power composites and their prod

Details Sol-gel derived SiO.sub.2 /oxide power composites and their prod Sol-gel derived SiO.sub.2 /oxide power composites and their prod

1989-04-19

1992-09-15

Lovering, Richard D.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

25231501, 2523155, 2523156, 2523157, 264 42, 428328, B01J 1300, C03C 306

Patent

active

051478293

ABSTRACT:
A SiO.sub.2 /oxide powder composite made by preparing a sol containing SiO.sub.2 and optionally Al.sub.2 O.sub.3, Li.sub.2 O, Na.sub.2 O, TiO.sub.2, B.sub.2 O.sub.3 and mixtures thereof with oxide powder consisting of SiO.sub.2, Al.sub.2 O.sub.3, ZrO.sub.2, TiO.sub.2, Li.sub.2 O-TiO.sub.2, Li.sub.2 O-Al.sub.2 O.sub.3 -TiO.sub.2, .beta. spodumene crystals, .beta. eucryptite crystals, aluminum titanate, 68 SiO.sub.2 -21.4 Al.sub.2 O.sub.3 -5.7 TiO.sub.2 -3.8 Li.sub.2 O (mole %) and mixtures thereof having a size from about 10 microns to about 0.001 micron dispersed therein, gelling the sol to produce a monolithic SiO.sub.2 gel matrix having homogeneously distributed therein the oxide powder, and drying the monolithic SiO.sub.2 gel/oxide powder composite.

REFERENCES:
patent: 2281810 (1942-05-01), Stone et al.
patent: 3594205 (1971-07-01), Gulledge et al.
patent: 3758317 (1973-09-01), Moore, Jr. et al.
patent: 3847583 (1974-11-01), Dislich et al.
patent: 4242251 (1980-12-01), Aishima et al.
patent: 4323381 (1982-04-01), Matsuyama et al.
patent: 4851150 (1989-07-01), Hench et al.

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