Armor material made of glass ceramics
AssigneeSchott AG
InventorsRainer Liebald, Wolfram Beier, Jochen Alkemper, Thilo Zachau, Dirk Sprenger
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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, Nb2O3 and/or Sc2O3 and 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, ZrO2 or 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.
Claims17
Armor material made of a glass-ceramic, containing (in wt. %, oxide basis):
- 5-33
- of SiO2
- 20-50
- of Al2O3
- 5-40
- of MgO
- 0-15
- of B2O3
- 0.1-30
- of Y2O3, Ln2O3, As2O3, Nb2O5 and/or Sc2O3
- 0-10
- of P2O5
Dependencies are inferred from the claim text.