The development of electrochemical generators based on solid oxide fuel cells requires the development of sealant materials that would ensure gastight junction of separate components and be chemically and thermally compatible with other functional materials. This study deals with the effect of small additions of Cr2O3 on the thermal properties and chemical stability of a glass sealant of the composition 54.39SiO2–13.78Na2O–1.67K2O–5.02CaO–12.37MgO–0.61Y2O3–11.26Al2O3–0.9B2O3. Introduction of chromium oxide increases the coefficient of linear thermal expansion relative to the initial composition but does not affect the sealing temperature and phase composition of the glass ceramic. The materials developed exhibit good chemical stability in contact with Crofer22APU chromium-containing alloy and can be recommended for use as sealants for solid oxide fuel cells. [ABSTRACT FROM AUTHOR]
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