DTA, powder XRD and SEM study of manganese-containing borate glasses

Several homogeneous glasses in the ternary SiO 2/B 2O 3/Na 2O containing MnO 2 were investigated by powder XRD, DTA and SEM. The presence of a crystalline Mn 7SiO 12 phase in the glasses which contain more than 20 mol% of MnO 2 is confirmed. The crystalline compound could be synthesised in a pure fo...

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Published inWaste management (Elmsford) Vol. 15; no. 5; pp. 417 - 421
Main Authors Shah, J.G., Patki, V.A., Raj, Kanwar, Rao, U.R.K.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.01.1995
New York, NY Elsevier Science
Subjects
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Glasses
Structure, analysis, properties
Scanning electron microscopy
Crystalline phase
Boron Oxides
Silicon Oxides
Manganese Oxides
Sodium Oxides
Differential thermal analysis
Phase analysis
X ray diffraction
Borosilicate glass
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Summary:Several homogeneous glasses in the ternary SiO 2/B 2O 3/Na 2O containing MnO 2 were investigated by powder XRD, DTA and SEM. The presence of a crystalline Mn 7SiO 12 phase in the glasses which contain more than 20 mol% of MnO 2 is confirmed. The crystalline compound could be synthesised in a pure form at 1000°C at ambient pressure. No other crystalline phase in the ternary SiMnO was detected in the otherwise homogeneous glass.
ISSN:0956-053X
1879-2456
DOI:10.1016/0956-053X(95)00057-7