METHOD FOR SYNTHESIZING MGO - AL2O3 - SIO2 GLASSES AND CERAMICS

摘要

A vapor phase method for the synthesis of MgO-Al2O3-SiO2 products, including MgO-Al2O3-SiO2 glasses of optical quality, wherein SiCl4, aluminum halide, and organometallic magnesium vapors are oxidized by flame oxidation and the oxides collected and sintered to glass or ceramic products, is described. A added shield gas stream is provided during flame oxidation of the vapors to reduce or prevent MgCl2 by-product formation at the burner and in the product.