The effect of processing variables on the mechanical and electrical properties of barium-titanate positive-temperature-coefficient-of-resistance ceramics

1993 ◽  
Vol 28 (16) ◽  
pp. 4311-4316 ◽  
Author(s):  
J. M. Blamey ◽  
T. V. Parry
Keyword(s):  
Electrical Properties ◽  
Barium Titanate ◽  
Temperature Coefficient ◽  
Positive Temperature Coefficient ◽  
Positive Temperature ◽  
Temperature Coefficient Of Resistance ◽  
Mechanical And Electrical Properties ◽  
Processing Variables

Investigation of PTCR characteristics in Nb2O5-doped BaTiO3-based chip-type ceramics prepared by reduction sintering-reoxidation method

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040047
Author(s):  
Xuxin Cheng ◽  
Xiaoming Chen ◽  
Haining Cui ◽  
Yuxin Wang ◽  
Chao Xiong
Keyword(s):  
Electrical Properties ◽  
Temperature Coefficient ◽  
Room Temperature ◽  
Positive Temperature Coefficient ◽  
Positive Temperature ◽  
Firing Time ◽  
Temperature Coefficient Of Resistance ◽  
Reducing Atmosphere ◽  
Chip Type ◽  
Sintering Conditions

This study investigates the influence of sintering conditions on electrical properties and positive temperature coefficient of resistance (PTCR) of [Formula: see text] (BTNO) ceramics, fired at [Formula: see text]C for different times from 1 to 6 h in a reducing atmosphere and reoxidised within the temperature range of [Formula: see text]–[Formula: see text]C for 1 h. The results showed that the room-temperature (RT) resistance and the resistance jump of the multilayer BTNO ceramics decreased with an increase in the firing time. Furthermore, the RT resistance of the BTNO samples gradually increased at first and then rapidly increased with increasing reoxidation temperature. In addition, the influence of sintering times on the microstructure of ceramics was also investigated.

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