Comparative Raman Study of Mixed-Alkali and Similar Ion Exchanged Glasses.
Abstract
The Raman spectra of analogous ion exchanged and mixed alkali disilicate and aluminodisilicate glasses of the same relative composition of dissimilar cations have been determined and employed to investigate the origin of the similarity of the mechanical loss features exhibited by them. Ion exchange of Na+ for Li+ in Li2O-Al2O3-2SiO2 glasses is shown to yield glasses whose network structure is different from that of the mixed alkali glasses of the same stoichiometry, but to attain that structure upon annealing. The network structure of ion exchanged and conventionally mixed alkali disilicate glasses are apparently identical. These results are interpreted in light of the mechanical loss spectra of the analogous glasses prepared in the two ways. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 10, 1979
- Accession Number
- ADA080840
Entities
People
- Charles Windisch
- William M. Risen Jr
Organizations
- Brown University