Method for manufacturing glass from the gas phase
AssigneeSiemens Aktiengesellschaft
InventorsNikolaos Douklias, Josef Grabmaier
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Abstract
A method for the manufacture of starting materials for fiber optical waveguides and the like from gas phase, wherein glass compositions are produced in a reaction zone in the presence of condensation nuclei being additionally introduced into said reaction zone and being used to increase the rate of glassforming and the rate of deposition of said glass composition being deposited on a solid surface as a soot or a powder. The nuclei can be added as particles of micron size to a carrier or reaction gas that is to be introduced into the reaction zone. The particles can be themselves produced immediately before the deposition zone in a reaction gas mixture which is subsequently introduced into the reaction zone.
Claims10
A method for manufacturing glass by means of deposition from the vapor phase which comprises feeding reaction gases into a vapor phase reaction zone, said reaction gases being capable of reacting to form a glass-forming chemical compound in a chemical reaction, the conditions in said reaction zone being sufficient to initiate said chemical reaction and cause particles of said glass-forming chemical compound to deposit out of said reaction zone onto a solid surface in a deposition zone as soot, fusing said soot to form a glass film, feeding into said reaction zone micron-sized particles of said glass-forming chemical compound while said chemical reaction is occurring in said reacton zone, said particles acting as condensation nuclei, and being present in sufficient amount such that the rate of formation of said soot and the rate of its vapor phase deposition on said solid surface is increased.
Dependencies are inferred from the claim text.