Abstract

The phase evolution, microstructure and electrical properties were investigated in the P2O5 modified niobate-based B2O3 system glass-ceramics. Results showed that a minor phase determined as Ba2P6O17 was formed as P2O5 content exceeds 3mol%. The permittivity was decreased and the breakdown strength BDS was increased from 944 to 1650kV/cm with increasing P2O5 concentration. The maximum energy density of 9.1J/cm3 was achieved in the glass-ceramics with 5mol% P2O5, which was improved by 1.8 times as compared with that of the pure glass-ceramic.

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