Low Melting Temperature Machinable Bioactive Glass-ceramic

Abstract

Abstract: A basic composition of SiO₂-MgO-Al₂O₃-K₂O-CaO-P₂O₅-F glass system was selected,
and different contents of ZnO were added. The melting results show that the addition of ZnO can reduce the melting temperature of the glass
from 1450℃ to 1300℃. Thus, the transparent as-cast glasses of the machinable bioactive glass ceramic can be obtained at the lower temperature.
The main phases of the glass ceramic are mainly mica phase and apatite phase after crystallization. Microstructure of the glass ceramic is petaloid-like.
The fracture of the glass ceramic is transgranular and some crystals are drawn and this feature makes the glass ceramic show high strength. The glass ceramic
also has good machinability due to the existence of mica phase.

Key words: low-melting temperature, machinability, bioactive, glass-ceramic

CLC Number:

TQ171

QIN Xiao-Mei,XIU Zhi-Meng,ZUO Liang,LI Song. Low Melting Temperature Machinable Bioactive Glass-ceramic[J]. Journal of Inorganic Materials.

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Low Melting Temperature Machinable Bioactive Glass-ceramic

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