High performance glass ceramics and method for producing high-performance glass ceramics

US8993464B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Falk Gabel · Schlangenbad, DE
• Eveline Rudigier-Voigt · Mainz, DE
• Christian Henn · Bad Kreuznach, DE
• Roland Leroux · Stadecken-Elsheim, DE
• Lorenz Strenge · Ingelheim am Rhein, DE
• Roland Dudek · Bad Kreuznach, DE

Key dates

• Filing date: Jul 13, 2010
• Grant date: Mar 31, 2015
• Expiry date: Nov 15, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a glass ceramic comprising article, wherein the integral, non-post-processed and non-reworked glass ceramic comprising article comprises at least three different types of microstructures. The microstructures differ in the number and/or size of the crystallites contained per unit volume, and/or in the composition of the crystallites, and/or in the composition of the residual glass phases. The different microstructures are characterized by different relative ion content profiles across a cross-section perpendicular to the transition areas. The relative ion content profiles are determined from intensities which are determined using secondary ion mass spectrometry, and each of the three different types of microstructures preferably has different intensity plateaus for individual ions, wherein the individual ions are components of the main crystal phases.