Metal colloid-colored glass ceramic and colorless glass convertible into same
AssigneeSchott AG
InventorsMeike Schneider, Thilo Zachau, Friedrich Siebers, Wolfgang Schmidbauer
Life of this patent
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Abstract
The colorless transparent colloid-former-containing glass that is convertible into a colorless transparent glass ceramic or a metal colloid-colored glass ceramic via respective heat treatments contains a combination of one or more metal colloid formers and one or more redox partners. The metal colloid formers are compounds containing Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and/or Sn. The redox partners are compounds containing As, Ce, Fe, Mn, Sb, Sn and/or W, with the proviso that the redox partner must be different from the metal colloid former.
Claims16
A metal colloid-colored glass ceramic made by ceramicizing a colorless transparent precursor glass, said colorless transparent precursor glass comprising, a combination of at least one metal colloid former and at least one redox partner capable of reducing said at least one metal colloid former to a metallic state;
- wherein said at least one metal colloid former contains at least one metal selected from the group consisting of Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and Sn and said at least one redox partner contains at least one element selected from the group consisting of As, Ce, Fe, Mn, Sb, Sn and W;
- with the proviso that the at least one metal colloid former and the at least one redox partner are different from each other;
- wherein said precursor glass consists of a magnesium-alumino-silicate glass with a composition, in percent by weight on an oxide basis, of:
- SiO2
- 45.0-62.0
- Al2O3
- 15.0-25.0
- MgO
- 2.0-10.0
- ZnO
- 2.0-15.0
- BaO
- 0-3.0
- SrO
- 0-3.0
- TiO2
- 0.5-8.0
- ZrO2
- 0.5-4.0
- P2O5
- 0
- B2O3
- 0-5.0;
- whereby the metal colloid-colored glass ceramic contains at least a part of said at least one metal in said metallic state.
A metal colloid-colored glass ceramic made by ceramicizing a colorless transparent precursor glass, said colorless transparent precursor glass comprising a combination of at least one metal colloid former and at least one redox partner capable of reducing said at least one metal colloid former to a metallic state;
- wherein said at least one metal colloid former contains at least one metal selected from the group consisting of Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and Sn and said at least one redox partner contains at least one element selected from the group consisting of As, Ce, Fe, Mn, Sb, Sn and W and said at least one redox partner comprises SnO2 in an amount of from 0.97 to <1.9 wt. %;
- with the proviso that the at least one metal colloid former and the at least one redox partner are different from each other;
- whereby the metal colloid-colored glass ceramic contains at least a part of said at least one metal in said metallic state.
A metal colloid-colored glass ceramic made by ceramicizing a colorless transparent precursor glass, said colorless transparent precursor glass comprising a combination of at least one metal colloid former and at least one redox partner capable of reducing said at least one metal colloid former to a metallic state;
- wherein said at least one metal colloid former contains at least one metal selected from the group consisting of Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and Sn and said at least one redox partner contains at least one element selected from the group consisting of As, Ce, Fe, Mn, Sb, Sn and W and said at least one redox partner comprises As2O3 in an amount of from 0.93 to 3.0 wt. %;
- with the proviso that the at least one metal colloid former and the at least one redox partner are different from each other;
- whereby the metal colloid-colored glass ceramic contains at least a part of said at least one metal in said metallic state.
A metal colloid-colored glass ceramic made by ceramicizing a colorless transparent precursor glass, said colorless transparent precursor glass comprising a combination of at least one metal colloid former and at least one redox partner capable of reducing said at least one metal colloid former to a metallic state;
- wherein said at least one metal colloid former contains at least one metal selected from the group consisting of Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and Sn and said at least one redox partner contains at least one element selected from the group consisting of As, Ce, Fe, Mn, Sb, Sn and W and said at least one redox partner comprises Sb2O3 in an amount of from 1.59 to 6.0 wt. %;
- with the proviso that the at least one metal colloid former and the at least one redox partner are different from each other;
- whereby the metal colloid-colored glass ceramic contains at least a part of said at least one metal in said metallic state.
A metal colloid-colored glass ceramic made by ceramicizing a colorless transparent precursor glass, said colorless transparent precursor glass comprising a combination of at least one metal colloid former and at least one redox partner capable of reducing said at least one metal colloid former to a metallic state;
- wherein said at least one metal colloid former comprises SnO2 in an amount of from 0.1 to <1.9 wt. % and said at least one redox partner comprises As2O3 in an amount of from 0.93 to 3 wt. %;
- with the proviso that the at least one metal colloid former and the at least one red ox partner are different from each other;
- whereby the metal colloid-colored glass ceramic contains at least a part of said at least one metal in said metallic state.
A metal colloid-colored glass ceramic made by ceramicizing a colorless transparent precursor glass, said colorless transparent precursor glass comprising a combination of at least one metal colloid former and at least one redox partner capable of reducing said at least one metal colloid former to a metallic state;
- wherein said at least one metal colloid former comprises Bi2O3 in an amount of from 0.1 to 5 wt. % and said at least one redox partner comprises SnO2 in an amount of from 0.97 to <1.9 wt. %;
- with the proviso that the at least one metal colloid former and the at least one redox partner are different from each other;
- whereby the metal colloid-colored glass ceramic contains at least a part of said at least one metal in said metallic state.
Dependencies are inferred from the claim text.