Effect of Nb2O5 Addition to the Electrical Properties of Fe2TiO5 Ceramics-Based NTC Thermistor

Wiendartun Wiendartun; Risdiana Risdiana; Fitrilawati Fitrilawati; Rustam E. Siregar

doi:10.4028/www.scientific.net/MSF.827.262

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HomeMaterials Science ForumMaterials Science Forum Vol. 827Effect of Nb2O5 Addition to the Electrical...

Effect of Nb₂O₅ Addition to the Electrical Properties of Fe₂TiO₅Ceramics-Based NTC Thermistor

Abstract:

The aims of this research is to identify the effect of Nb₂O₅ addition on the electrical properties of Fe₂TiO₅ ceramics-based NTC thermistor.The concentration of Fe₂O₃ and TiO₂ was proportional to Fe₂TiO₅, whereas the concentration value of Nb₂O₅were 0, 0.5 and 1.0 mole %, respectively. Within two hours, the mixed powder was pressed at 4 ton/cm² to form pellets and sintered at 1300 °C in air. It can perceived from the XRD data that the sintered ceramics had single phase of Fe₂TiO₅, pseudobrookite. From SEM data, it is found that addition of Nb₂O₅decreases the grain size. The addition of Nb₂O₅ increases thermistor constant, activation energy and electrical resistance of Fe₂TiO₅ ceramics. The values of thermistor constant of Nb₂O₅ added-Fe₂TiO₅ceramics were relatively large, indicated that the ceramics were aplicable as the NTC thermistor.

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Periodical:

Materials Science Forum (Volume 827)

Pages:

262-265

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.827.262

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Online since:

August 2015

Authors:

Wiendartun Wiendartun*, Risdiana Risdiana, Fitrilawati Fitrilawati, Rustam E. Siregar

Keywords:

Ceramic, Fe₂TiO₅, Nb₂O₅, NTC, Thermistor

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