Research Article
Effects of M2+ (M = Ca, Sr, and Ba) Addition on Crystallization and Microstructure of SiO2-MgO-Al2O3-B2O3-K2O-F Glass
Table 2
FTIR band position and assignment of different glass-ceramics heat-treated at 1050°C/4 h.
| | Band position (cm−1) | Band assignment |
| | 477 | Si-O-Si bending vibration modes of [SiO4] unit |
| | 612 | Al-O-Al stretching vibration of [AlO6] unit |
| | 686 | Si-O-Si symmetric stretching vibration of [SiO4] unit |
| | 812 | Si-OH stretching vibration mode |
| | 990–1010 | Si-O-Si asymmetric stretching vibration | | B-O stretching vibration of [BO4] units |
| | 1280 | Antisymmetric stretching vibration of Si-O-Si of [SiO4] unit |
| | 1440 | B-O symmetric stretching vibration related to tri-, tetra-, and pentaborate groups |
| | 1630 | H-O-H bending vibration of molecular water |
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