Metal colloid-colored glass ceramic and colorless glass convertible into same

US8609561B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Meike Schneider · Taunusstein, DE
• Thilo Zachau · Bürstadt, DE
• Friedrich Siebers · Nierstein, DE
• Wolfgang Schmidbauer · Mainz, DE

Key dates

• Filing date: Jul 17, 2012
• Grant date: Dec 17, 2013
• Expiry date: Jul 17, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2214/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A 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 preferably oxides containing Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and/or Sn. The redox partners are preferably oxides 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. The glass advantageously contains from 0.97 to 1.9 wt. % SnO2, 0.93 to 3.0 wt. % As2O3, or 1.59 to 6.0 wt. % of Sb2O3 as redox partner.