Lead-free BaTiO₃-(Bi0.5K0.5)TiO₃PTCR Ceramics and Effects of Nb₂O5 on Its PTCR Characteristics

In this study, the effect of Nb2O5 and sintering time on the positive temperature of coefficient of resistivity (PTCR) behavior of lead free Ba0.99(Bi0.5Na0.5)0.01TiO3 (BBNT) ceramics were investigated in order to fabricate a PTC thermistor with high Tc temperature more than 140℃. In particular, BBNT ceramic doped with 0.1mol% Nb2O5 and sintered at 1350℃ for 4 h has significantly increased Curie temperature (Tc) of about 200℃, showed good PTCR behavior of room-temperature resistivity (ρrt) of 40 Ω․㎝, a high ρmax/ρmin ratio of 43.78×10 3 and a large resistivity temperature factor (α) of 16.1%/℃. With increasing addition of Nb2O5 content, the ρrt decreased to a minimum value of 40 Ω․㎝ at 0.1mol% Nb2O5 and the ρrt increased for x value over 0.1 mol%.

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Lead-free BaTiO₃-(Bi0.5K0.5)TiO₃PTCR Ceramics and Effects of Nb₂O5 on Its PTCR Characteristics

Abstract: Positive temperature coefficient of resistivity (PTCR) characteristics of (1-x)BaTiO

Cited by 2 publications

References 11 publications

PTC properties of PE/CB composites for energy saving heating elements

PTC properties of PE/CB composites for energy saving heating elements

Positive Temperature Coefficient of Resistivity(PTCR) Behavior of Nb₂O₅Added Ba_0.99(Bi_0.5Na_0.5)_0.01TiO₃Ceramics as a Function of Sintering Time

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Lead-free BaTiO₃-(Bi0.5K0.5)TiO₃PTCR Ceramics and Effects of Nb₂O5 on Its PTCR Characteristics

Abstract: Positive temperature coefficient of resistivity (PTCR) characteristics of (1-x)BaTiO

Cited by 2 publications

References 11 publications

PTC properties of PE/CB composites for energy saving heating elements

PTC properties of PE/CB composites for energy saving heating elements

Positive Temperature Coefficient of Resistivity(PTCR) Behavior of Nb2O5Added Ba0.99(Bi0.5Na0.5)0.01TiO3Ceramics as a Function of Sintering Time

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Product

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Positive Temperature Coefficient of Resistivity(PTCR) Behavior of Nb₂O₅Added Ba_0.99(Bi_0.5Na_0.5)_0.01TiO₃Ceramics as a Function of Sintering Time