Nanocrystalline materials

Details Nanocrystalline materials Nanocrystalline materials

1992-12-16

1994-04-05

Group, Karl

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501 32, C03C 1004, C03C 1400

Patent

active

053004647

ABSTRACT:
Glass or crystal particles of nanocrystalline size having a minor dimension of 0.1 to 100 Angstrom units. They may be prepared by controlled thermal separation of phase-separable glasses. Preferred crystal forms are zinc pyrophosphate and lithium disilicate. A crystallizable glass is combined with phyllosilicate particles and sintered to form an oriented composite body. During slow sintering, the crystal grows epitaxially on the phyllosilicate.

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patent: 4826628 (1989-05-01), Rittler
patent: 4952388 (1990-08-01), Rittler
patent: 5091115 (1992-02-01), Nogami

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