Porous Ceramic as Air Humidity Sensors

Rodrigo de Matos Oliveira; Maria do Carmo de Andrade

doi:10.4028/www.scientific.net/MSF.727-728.545

Paper Titles

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Magnetic Evaluation of Ni-Zn Ferrites Doped with Aluminium
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Electrical and Microstructural Properties of Varistors Based on Nanostructured Tetra-Needle Like Zinc Oxide Powders
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Variation of Resonant Frequency with Temperature in Ceramic Resonators Based on Ba₂Ti₉O₂₀ Compositions
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Porous Ceramic as Air Humidity Sensors
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Quantification of Phase Compositions Present in the System [(NiO)_x].[(CoO)_1-x].[(Al₂O₃)], 0.05 ≤ X ≤ 0.95, and the Effect in the Electrical Properties of Semiconductor as a Consequence of the CO⁺² Variation
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Production of Oxide Ceramic Matrix Composites by a Prepreg Technique
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Fiber-Matrix Compatibility in LZSA Glass-Ceramic Matrix Composites
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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Porous Ceramic as Air Humidity Sensors

Porous Ceramic as Air Humidity Sensors

Abstract:

The development of sensors for relative humidity monitoring, with national technology, is one of the greatest needs identified by National Institute for Space Research (INPE) to allow concerned future projects and minimize dependence on imported components and materials. Therefore, in this work, porous ceramic was manufactured from ZrO₂ and TiO₂ powders, compacted and sintered at different temperatures, for application as air humidity sensing elements. The characterization of the sintered ceramics were carried out through x-ray diffraction (crystalline phases), scanning electron microscopy, SEM (microstructure), density determination and capacitance measurements using a RLC bridge in a climatic chamber. The results evidenced that the air humidity ceramic sensing elements are very promising ones.

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Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

545-549

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.545

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Online since:

August 2012

Authors:

Rodrigo de Matos Oliveira, Maria do Carmo de Andrade

Keywords:

Air Humidity Sensors, Porous Ceramic, Relative Humidity, Sensor Elements

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