Email this article Thermal Behavior of Howlite, Ca2B5SiO9(OH)5
- Authors: Gorelova L.A.1,2, Krzhizhanovskaya M.G.2, Bubnova R.S.1,2
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Affiliations:
- Grebenshchikov Institute of Silicate Chemistry
- St. Petersburg State University
- Issue: Vol 43, No 6 (2017)
- Pages: 611-614
- Section: Short Communications
- URL: https://journals.rcsi.science/1087-6596/article/view/216324
- DOI: https://doi.org/10.1134/S1087659617060037
- ID: 216324
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Abstract
The thermal behavior of natural borosilicate howlite, Ca2B5SiO9(OH)5, is studied by the methods of high-temperature X-ray diffraction and differential thermal analysis in the temperature range of 30–1100°C. The thermal expansion is anisotropic (αmax/αmin = 3.6); the degree of anisotropy increases (αmax/αmin = 4.3) with a temperature increase up to 480°C (360–480°C).
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About the authors
L. A. Gorelova
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State University
Email: rimma_bubnova@mail.ru
Russian Federation, St. Petersburg, 199034; St. Petersburg, 199034
M. G. Krzhizhanovskaya
St. Petersburg State University
Email: rimma_bubnova@mail.ru
Russian Federation, St. Petersburg, 199034
R. S. Bubnova
Grebenshchikov Institute of Silicate Chemistry; St. Petersburg State University
Author for correspondence.
Email: rimma_bubnova@mail.ru
Russian Federation, St. Petersburg, 199034; St. Petersburg, 199034
