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Effect of processing parameters on humidity sensing behavior of MgAl2O4 spinel ceramics
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143203.pdf
Date
2003
Author
Cambaz, Zarife Göknur
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An experimental study has been conducted in order to determine the effects of processing parameters on the humidity sensing characteristics of ceramic sensors produced from magnesium aluminate. MgAİ2Û4 powders were synthesized by the mixed oxide technique and by the citrate route in the laboratory. In some experiments, the powders were doped with Na+, Mn2+, or Ti4+ ions in order to modify the sintering and the response behavior of the spinel ceramics. The variations in electrical impedance were determined at room temperature under relative humidity (RH) values ranging from 21 to 98 percent. The effect of the powder preparation technique, sintering conditions, and introduction of additives on the microstructure and humidity sensitivity of MgAb04 were investigated. The results of the study revealed that the humidity sensing characteristics of porous magnesium aluminate were strongly depended on microstructure which was controlled by the parameters discussed above.
Subject Keywords
Humidity sensor
,
MgAl204
,
Spinel
URI
https://hdl.handle.net/11511/13456
Collections
Graduate School of Natural and Applied Sciences, Thesis
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Z. G. Cambaz, “Effect of processing parameters on humidity sensing behavior of MgAl2O4 spinel ceramics ,” M.S. - Master of Science, Middle East Technical University, 2003.
