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Inorganic Materials

, Volume 54, Issue 12, pp 1274–1276 | Cite as

Granular Inhomogeneity Formation during Quartz Glass Melting

  • R. Sh. Nasyrov
  • B. S. Lunin
  • V. M. Lopatin
Article
  • 12 Downloads

Abstract

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.

Keywords:

structure of quartz glass quartz grit grains grain boundaries structural impurities 

Notes

REFERENCES

  1. 1.
    Leko, V.K., Structure of fused silica, Fiz. Khim. Stekla, 1993, vol. 19, no. 5, pp. 673–715.Google Scholar
  2. 2.
    Ogata, D.Y., Shinohara, A.H., Torikai, D., and Suzuki, C.K., Micron order structural inhomogeneities in vitreous silica observed by etching technique, Radiat. Eff. Defects Solids, 1998, vol. 147, nos. 1–2, pp. 65–71.CrossRefGoogle Scholar
  3. 3.
    Leko, V.K. and Mazurin, O.V., Svoistva kvartsevogo stekla (Properties of Quartz Glass), Leningrad: Nauka, 1985.Google Scholar
  4. 4.
    GOST (State Standard) 15130-86: Optical Quartz Glass. General Technical Specifications, Izd. Standartov, 1999.Google Scholar
  5. 5.
    Bur’yan, Yu.I., Borisov, L.A., and Krasil’nikov, P.A., Quartz raw materials: vital type of mineral resource for high-technology industry sectors, Razved. Okhr. Nedr, 2007, no. 10, pp. 9–12.Google Scholar
  6. 6.
    Nasyrov, R.Sh. and Lebedev, A.S., Oblasti primeneniya i sposoby sozdaniya vysokochistogo kvartsevogo kontsentrata iz prirodnogo syr’ya (Application Fields and Preparation Techniques for High-Purity Quartz Concentrate from Natural Raw Materials), Miass/Yekaterinburg: Ural’sk. Otd. Ross. Akad. Nauk, 2011.Google Scholar
  7. 7.
    Nasyrov, R.Sh., RF Patent 2 431 601, Byull. Izobret., 2011, no. 29, p. 65.Google Scholar
  8. 8.
    Leko, V.K. and Komarova, L.A., Impurity distribution in surface layers of quartz glass tubes, Opt.-Mekh. Prom–st., 1974, no. 6, pp. 33–35.Google Scholar

Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  1. 1.Institute of Mineralogy, Ural Branch, Russian Academy of Sciences, Ilmen State ReserveMiassRussia
  2. 2.Moscow State UniversityMoscowRussia
  3. 3.South Ural State University (Miass Branch)MiassRussia

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