Patent · US Active

Method for producing a composite body of a material with a high silicic acid content

US10106453B2 · kind B2 · utility

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1References

13Claims

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Assignee

HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

Christian Schenk · Ingelheim am Rhein, DE
Frank Wessely · Dieburg, DE
Gerrit Scheich · Seligenstadt, DE

Key dates

Filing date	Nov 22, 2016
Grant date	Oct 23, 2018
Priority date	—
Expiry date	May 5, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C2214/30
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A low cost method for producing a mechanically and thermally stable composite body containing a first layer of a material with a high silicic acid content and an additional component connected to a second layer of a material with a high silicic acid content and an additional component in a second concentration differing from the first concentration is provided. The method involves (a) preparing a first slurry layer having a free surface using a first shirt mass containing SiO2 particles and an additional component dispersed in a first dispersing agent, (b) providing a second slurry mass containing SiO2 particles and an additional component in a second concentration dispersed in a second dispersing agent, (c) forming a composite-body intermediate product by applying the second slurry mass to the free surface of the first slurry layer, and (d) heating the composite-body intermediate product while forming the composite body.

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