Quartz glass component of high thermal stability, semifinished product therefor, and method for producing the same
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United States of America Patent
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Nov 1, 2022
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Jan 10, 2019
app pub date -
Jul 9, 2018
filing date -
Jul 10, 2017
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Abstract
In a known method for producing a quartz glass component, a crystal formation layer containing a crystallization promoter is produced on a coating surface of a base body of quartz glass. Starting therefrom, to provide a method for producing a quartz glass component of improved thermal strength and long-term stability which displays a comparatively small deformation particularly also in the case of rapid heating-up processes, it is suggested according to one aspect that a porous crystal formation layer containing amorphous SiO2 particles is produced with a mean thickness in the range of 0.1 to 5 mm, and that a substance which contains cesium and/or rubidium is used as the crystallization promoter.
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