Dependence of moisture absorption property on sol–gel process of transparent nano-structured γ-Al2O3 ceramics

Nano-structured D*g-Al2O3 ceramics have been prepared from Al-Sec-Butoxide (C12H27AlO3) by sol-gel process to investigate and evaluate the characteristics as a humidity sensor. It is found that they have a good response for extremely low ppmv moisture. D*g-Al2O3 ceramics contains pore size less than...

Full description

Saved in:
Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2005-09, Vol.109 (2), p.363-366
Main Authors: Saha, D, Mistry, K K, Giri, R, Guha, A, Sensgupta, K
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nano-structured D*g-Al2O3 ceramics have been prepared from Al-Sec-Butoxide (C12H27AlO3) by sol-gel process to investigate and evaluate the characteristics as a humidity sensor. It is found that they have a good response for extremely low ppmv moisture. D*g-Al2O3 ceramics contains pore size less than 4nm and shows sensitivity down to 3DDT0ppmv. Sol-gel process has been used to fabricate monolith substrate thickness 65D*mm for making moisture sensor. The most important advantages of sol-gel processing over conventional coating methods are the easier fabrication of films or coatings of complex oxides and easier control of composition and microstructure of the deposited coating compared to conventional thin film technology.
ISSN:0925-4005
DOI:10.1016/j.snb.2005.01.002