Record number :
833743
Title of article :
Structure and crystallization behavior of borate-based bioactive glass
Author/Authors :
Aihua Yao، نويسنده , , Mohamed N. Rahaman، نويسنده , , Jian Lin، نويسنده , , Wenhai Huang، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2007
Pages :
6
From page :
9730
To page :
9735
Abstract :
The structure and crystallization behavior of borate-based bioactive glass, designated 45S5B1, were investigated by Fourier transform infrared (FTIR) spectroscopy, differential thermal analysis (DTA), X-ray diffraction (XRD), and scanning electron microscopy (SEM). FTIR spectroscopy revealed that the network structure of the glass consisted mainly of [BO3], [BO4] and [PO4] units. Two distinct crystallization peaks were observed for this glass by DTA, with activation energies of 475 and 210 kJ/mol, respectively. XRD indicated that the crystallization process with higher activation was associated with the formation of CaNa3B5O10, whereas the process with the lower activation energy was associated with the formation of CaB2O4. The results indicated that the crystallization process in 45S5B1 glass was dominated by bulk crystallization, although surface crystallization also occurred for small particle sizes (<50 lm).
Journal title :
Journal of Materials Science
Serial Year :
2007
Link To Document :
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