Humidity Sensitive Characteristics of ZnO-TiO2-Ta2O5 Ceramic

Sergio Luiz Mineiro; Maria do Carmo de Andrade Nono; Carlos Kuranaga; M.D. Silva

doi:10.4028/www.scientific.net/MSF.498-499.293

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HomeMaterials Science ForumMaterials Science Forum Vols. 498-499Humidity Sensitive Characteristics of...

Humidity Sensitive Characteristics of ZnO-TiO₂-Ta₂O₅ Ceramic

Abstract:

The humidity sensing behavior of a ceramic oxide based on the ZnO-TiO2-Ta2O5 system was analyzed. Samples were uniaxially pressed and sintered at temperature range from 1000 to 1200oC. Electrical impedance and capacitance measurements were realized in different values of relative humidity (from 11 to 100%). The microstructures of the sintered samples were characterized by X-ray diffractions and SEM observations. Mercury porosimetry analyses were carried out to determine the open porosity and the surface area was measured by using the BET nitrogen method. The obtained results were correlated and discussed.

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Periodical:

Materials Science Forum (Volumes 498-499)

Pages:

293-298

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.498-499.293

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Online since:

November 2005

Authors:

Sergio Luiz Mineiro, Maria do Carmo de Andrade Nono, Carlos Kuranaga, M.D. Silva

Keywords:

Ceramic Sensor, Dielectric Property, Humidity, Porosity

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