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Microstructures formed during devitrification of Na2O·Al2O3·B2O3·SiO2·Fe2O3 glasses

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Abstract

Soda alumina borosilicate glasses of composition (24-y)Na2O·yAl2O3·14B2O3·37SiO2·25Fe2O3, y = 8, 12, 14, 16 mol%, were melted using Fe2O3 as raw material. Besides, samples with y = 12 and Fe2O3 concentrations of 14.32, 17.8, and 25.0 mol% were prepared from FeC2O4·2H2O as raw material. The X-ray diffraction analyses showed the presence of magnetite for the samples from all the investigated compositions. Transmission electron microscopy (TEM) evidenced that all the samples are phase separated and droplets in the diameter range 100–1000 nm, enriched in iron, are formed. Inside these droplets, numerous small magnetite particles, with size in the 25–40 nm interval, are crystallized.

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Abbreviations

XRD:

X-ray diffraction

SEM:

Scanning electron microscopy

TEM:

Transmission electron microscopy

EDX analysis:

Energy dispersive micro X-ray analysis

JCPDS:

Joint Committee on Powder Diffraction Standards

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Authors and Affiliations

  1. Physics Department, University of Chemical Technology and Metallurgy, Kl. Ohridski Blvd. 8, 1756, Sofia, Bulgaria

    Ruzha Harizanova

  2. Otto-Schott-Institut, Universität Jena, Fraunhoferstr. 6, 07743, Jena, Germany

    Ruzha Harizanova, Günter Völksch & Christian Rüssel

Authors
  1. Ruzha Harizanova
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  2. Günter Völksch
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  3. Christian Rüssel
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Correspondence to Ruzha Harizanova.

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Harizanova, R., Völksch, G. & Rüssel, C. Microstructures formed during devitrification of Na2O·Al2O3·B2O3·SiO2·Fe2O3 glasses. J Mater Sci 45, 1350–1353 (2010). https://doi.org/10.1007/s10853-009-4090-7

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  • DOI: https://doi.org/10.1007/s10853-009-4090-7

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