Thermal Properties of Na2O-MgO-TiO2-Al2O3-B2O3-SiO2 Glasses and Prospects for Their Use for Sealing Solid Oxide Fuel Cells


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A series of Na2O-MgO-TiO2-Al2O3-B2O3-SiO2 glasses promising as sealants for solid oxide fuel cells are prepared. The glassy state is confirmed by X-ray diffraction analysis, and the elemental composition is determined by inductively coupled plasma atomic emission spectroscopy. The coefficient of thermal expansion (CTE) is calculated from the dilatometric data; it varies within (69–77) × 10−7 K−1 and increases with the MgO to Al2O3 concentration ratio. The CTE calculation by the Appen method gives the results that are underestimated by 5–8% relative to the experimental data. The temperature dependences of the heat capacity of the glasses are determined by differential scanning calorimetry and calculated using the Kopp-Neumann rule. Comparison of the calculated values with the experimental data shows that the Kopp-Neumann rule is observed for the systems under consideration with relatively high accuracy. The sensitivity of different methods in determination of the glass transition point has been evaluated.

作者简介

L. Papko

Belarusian State Technological University

Email: other@e1.ru
白俄罗斯, Minsk, 220006

M. Dyadenko

Belarusian State Technological University

Email: other@e1.ru
白俄罗斯, Minsk, 220006

A. Kuz’min

Institute of High-Temperature Electrochemistry, Ural Branch; Ural Federal University

Email: other@e1.ru
俄罗斯联邦, Yekaterinburg, 620137; Yekaterinburg, 620002

D. Krainova

Institute of High-Temperature Electrochemistry, Ural Branch; Ural Federal University

Email: other@e1.ru
俄罗斯联邦, Yekaterinburg, 620137; Yekaterinburg, 620002

N. Saetova

Institute of High-Temperature Electrochemistry, Ural Branch

Email: other@e1.ru
俄罗斯联邦, Yekaterinburg, 620137

A. Raskovalov

Institute of High-Temperature Electrochemistry, Ural Branch

编辑信件的主要联系方式.
Email: other@e1.ru
俄罗斯联邦, Yekaterinburg, 620137

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