Effects of composition on selected physical properties of SiO2-K2O-Na2O glasses
β Scribed by D. W. Jones; A. S. Rizkalla; J. A. Johnson; E. J. Sutow
- Publisher
- Springer
- Year
- 1991
- Tongue
- English
- Weight
- 556 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0022-2461
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In glasses with the compositions (100x)(2Na 2 Oβ’16K 2 Oβ’8Al 2 O 3 β’74SiO 2 )xBaF 2 (with x = 0 to 6), the glass transition temperature decreases with increasing BaF 2 -concentration. Samples with x = 6 were thermally treated at temperatures in the range from 500 to 600 β’ C for 5-160 h. This leads to