Patent · US Active

Armor material made of glass ceramics

US7906444B2 · kind B2 · utility

6Cited by

9References

12Claims

0Family size

Assignee

Schott AG · DE

Inventors

Rainer Liebald · Nauheim, DE
Wolfram Beier · Essenheim, DE
Jochen Alkemper · Klein-Winternheim, DE
Thilo Zachau · Bürstadt, DE
Dirk Sprenger · Stadecken-Elsheim, DE

Key dates

Filing date	Aug 2, 2006
Grant date	Mar 15, 2011
Priority date	—
Expiry date	Nov 14, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C2214/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.