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Electrical Conductivity of Er2O3-Doped c-ZrO2 Ceramics

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Abstract

The effect of Er2O3 addition on electrical conductivity of c-ZrO2 was investigated by analyzing the impedance spectra of undoped and various amounts of Er2O3-doped cubic zirconia (c-ZrO2). The undoped and 1-15 wt% Er2O3-doped c-ZrO2 powders were prepared via colloidal process. The doped powders were then pelletized under a pressure of 200 MPa. In addition, the undoped and Er2O3-doped c-ZrO2 specimens were sintered at 1500 °C for 1 h. The electrical conductivity of the specimens was measured using a frequency response analyzer in the frequency range of 100 mHz-13 MHz, in the temperature range of 300-800 °C. Electrical conductivity results indicate an increase in the conductivity with increase in the test temperature. The addition of 1 wt% Er2O3 into c-ZrO2 led to an increase in the grain interior, grain boundary, and total conductivities. The distortion caused by the addition of Er3+ cations in the c-ZrO2 lattice leads to an increase in the concentration of oxygen vacancies in the c-ZrO2 matrix, resulting in an enhancement in the electrical conductivities.

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Acknowledgment

The authors thank Gazi University and Marmara University, Turkey, for the provision of laboratory facilities.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Faculty of Engineering, Harran University, 63300, Sanliurfa, Turkey

    Bulent Aktas

  2. Department of Metallurgical and Materials Engineering, Faculty of Technology, Gazi University, 06500, Besevler, Ankara, Turkey

    Suleyman Tekeli

  3. Institute of Science and Technology, Gazi University, Ankara, Turkey

    Mustafa Kucuktuvek

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  1. Bulent Aktas
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  2. Suleyman Tekeli
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  3. Mustafa Kucuktuvek
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Correspondence to Bulent Aktas.

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Aktas, B., Tekeli, S. & Kucuktuvek, M. Electrical Conductivity of Er2O3-Doped c-ZrO2 Ceramics. J. of Materi Eng and Perform 23, 349–355 (2014). https://doi.org/10.1007/s11665-013-0750-5

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  • DOI: https://doi.org/10.1007/s11665-013-0750-5

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