Composite material, heat-absorbing component, and method for producing the composite material

US9957431B2 · kind B2 · utility

Assignees

• HERAEUS QUARZGLAS GMBH & CO. KG · DE
• HERAEUS QUARTZ AMERICA LLC · US

Inventors

• Gerrit Scheich · Seligenstadt, DE
• Christian Schenk · Ingelheim am Rhein, DE
• Frank Wessely · Dieburg, DE
• Nadine Tscholitsch · Hanau, DE
• Ashur J. ATANOS · San Jose, US
• Christian Neumann · Hungen, DE
• Stephan Moritz · Niederrodenbach, DE
• Dirk Michel · Erbstadt, DE

Key dates

• Filing date: Nov 11, 2013
• Grant date: May 1, 2018
• Expiry date: Jan 27, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/131
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a known composite material with a fused silica matrix there are regions of silicon-containing phase embedded. In order to provide a composite material which is suitable for producing components for use in high-temperature processes for heat treatment even when exacting requirements are imposed on impermeability to gas and on purity, it is proposed in accordance with the invention that the composite material be impervious to gas, have a closed porosity of less than 0.5% and a specific density of at least 2.19 g/cm3, and at a temperature of 1000° C. have a spectral emissivity of at least 0.7 for wavelengths between 2 and 8 μm.