High-temperature Raman spectral investigation of various sulfate materials
- Alfred Univ., NY (United States)
Sulfate inclusions can appear in bubbles in soda lime silicate glasses during SO{sub 2} treatment. Such inclusions can be related to the various crystalline phases of sodium and calcium sulfate materials. There are a significant number of crystalline structural possibilities for these sulfates. High-temperature Raman spectra were measured for sodium and calcium sulfate materials at various temperatures in order to distinguish between the various phases. Raman spectra were measured in both a heating and cooling cycle. Particular crystalline phases were identified at the various temperatures. Factor group and band assignment analysis were conducted for each observed phase in order to better understand the vibrational nature of their Raman bands. Analysis of Raman microprobe spectra for the sulfate inclusion on the bubble surface in the glass indicated that the major sulfate phase was the orthorhombic phase (form III) of sodium sulfate.
- OSTI ID:
- 466584
- Report Number(s):
- CONF-951017--
- Country of Publication:
- United States
- Language:
- English
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