Armor material made of glass ceramics

Details Armor material made of glass ceramics Armor material made of glass ceramics

2011-03-15

2011-03-15

Group, Karl E (Department: 1731)

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

C501S005000, C501S010000, C501S032000, C089S036020

Reexamination Certificate

active

07906444

ABSTRACT:
The invention relates to a glass ceramic armour material consisting (in % by weight in relation to oxide base) of 5-33 SiO2, 20-50 Al2O3, 5-40 MgO, 0-15 B2O3, 0.1-30 Y2O3, Ln2O3, As2O3, Nb2O3and/or Sc2O3and 0-10 P2O5. The inventive armour material can also be reinforced with inorganic reinforcing fibres in a quantity of 5-65% by weight, preferably consisting of C, SiC, Si3N4, Al2O3, ZrO2or Sialon. Said armour material is characterised in that it exhibits a high elasticity modulus and is producible from green glass without to fear a premature crystallisation.

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