- PII
- 10.31857/S0132665122600881-1
- DOI
- 10.31857/S0132665122600881
- Publication type
- Status
- Published
- Authors
- Volume/ Edition
- Volume 49 / Issue number 2
- Pages
- 204-208
- Abstract
- Glass composition of 6Na2O 22B2O3·70SiO2·2Cr2O3 is studied by scanning electron microscopy, X‑ray powder diffractometry (XRPD), and differential thermal analysis, depending on the duration of heat treatment at a temperature of 550°C. It is established that during heat treatment for 24–96 h, a phase separation structure with interpenetrating phases is formed in the studied glass, and a crystalline phase of eskolaite—Cr2O3 is also formed. With the maximum heat treatment duration of 96 h, cristobalite is formed in the bulk of the glass, which is accompanied by a decrease in the glass transition temperature of the low-viscosity phase. In this case, the intensity of eskolaite peaks decreases. Cr2O3 and SiO2 crystallize apparently due to the substance of the low-viscosity phase.
- Keywords
- система Na<sub>2</sub>O–B<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub>–Cr<sub>2</sub>O<sub>3</sub> двухфазные стекла температура стеклования кристаллизация кристобалит эсколаит
- Date of publication
- 16.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 4
References
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