Thermal Expansion of Mg3B2O6 Borate


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The thermal expansion of magnesium borate (Mg3B2O6) is studied by the method of X-ray thermodiffraction in the temperature range 25–1100°C. The coefficients of thermal expansion are calculated as follows: αa = 13.0(5), αb = 8.5(5), αc = 8.0(5), αV = 30(1) × 10–6°С−1 at 25°C; and αa = 20.0(5), αb = 13.0(5), αc = 13.0(5), αV = 46(1) × 10–6°С−1 at 1100°С. The direction of the maximal thermal expansion (αa) is perpendicular to the preferred orientation of the BO3 triangles.

作者简介

V. Firsova

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences

Email: rimma_bubnova@mail.ru
俄罗斯联邦, St. Petersburg, 199034

A. Shablinskii

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences

Email: rimma_bubnova@mail.ru
俄罗斯联邦, St. Petersburg, 199034

D. Ershov

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences

Email: rimma_bubnova@mail.ru
俄罗斯联邦, St. Petersburg, 199034

R. Bubnova

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: rimma_bubnova@mail.ru
俄罗斯联邦, St. Petersburg, 199034

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