INFLUENCE OFLa2O3ADDITIONS ON CHEMICAL DURABILITY AND DIELECTRIC PROPERTIES OF BOROALUMINOSILICATE GLASSES

X. H. Zhang, Y. L. Yue () and H. T. Wu
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X. H. Zhang: School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China
Y. L. Yue: School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China
H. T. Wu: School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan 250022, China

Surface Review and Letters (SRL), 2012, vol. 19, issue 06, 1-6

Abstract: Boroaluminosilicate glasses containingLa2O3were prepared by the normal quenching method. The glass transition temperatures(Tg)were measured by differential scanning calorimetry (DSC). The structural role of RO was investigated by nuclear magnetic resonance (NMR). Chemical durability was evaluated by weight losses of glass samples after immersion in HC1 solution. High resolution scanning electron microscopy (HR-SEM) was used to examine the surface micrographs of corroded glass samples. The dielectric constant and tangent loss were measured in the frequency range 10–106Hz. The results revealed that chemical durability and dielectric properties increased with increasingLa2O3content.

Keywords: Boroaluminosilicate glasses; La2O3; chemical durability; dielectric properties (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1142/S0218625X1250062X

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