Nanocrystalline materials

Details Nanocrystalline materials Nanocrystalline materials

1992-01-09

1992-12-22

Group, Karl

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501 3, 501 10, 501 45, 501 63, C03C 1000

Patent

active

051734540

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: 2480672 (1949-08-01), Plank
patent: 4233169 (1980-11-01), Beall et al.
patent: 4676929 (1987-06-01), Rittler
patent: 4687750 (1987-08-01), Pinckey
patent: 4826628 (1989-05-01), Rittler
patent: 4952388 (1990-08-01), Rittler
patent: 5091115 (1992-02-01), Nogami

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