Granular Inhomogeneity Formation during Quartz Glass Melting

— This paper examines the formation of fine-grain inhomogeneity in quartz glass. We demonstrate that this defect emerges during the melting of fine-particle crystalline raw materials and the formation of a three-dimensional intergranular network, which contains a high impurity concentration and has...

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Bibliographic Details
Published inInorganic materials Vol. 54; no. 12; pp. 1274 - 1276
Main Authors Nasyrov, R. Sh, Lunin, B. S., Lopatin, V. M.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2018
Springer Nature B.V
Subjects
Chemistry
Chemistry and Materials Science
Heat treatment
High temperature
Impurities
Industrial Chemistry/Chemical Engineering
Inhomogeneity
Inorganic Chemistry
Materials Science
Melting
Quartz
Raw materials
Silica glass
structural impurities
quartz grit grains
grain boundaries
structure of quartz glass
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Summary:— This paper examines the formation of fine-grain inhomogeneity in quartz glass. We demonstrate that this defect emerges during the melting of fine-particle crystalline raw materials and the formation of a three-dimensional intergranular network, which contains a high impurity concentration and has a disordered structure. The present results are inconsistent with the existing believe that incomplete melting of quartz grains is the main cause of the development of fine-grain inhomogeneity. In contrast, prolonged high-temperature heat treatment increases the intergranular impurity concentration and intensifies the effect.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168518120130