MgAl2O4 spinel powders from oxide one pot synthesis (OOPS) process for ceramic humidity sensors

被引：98

作者：

Laobuthee, A

Wongkasemjit, S ^{[1
]}

Traversa, E

Laine, RM

机构：

[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand

[2] Univ Roma Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome, Italy

[3] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 02期

关键词：

spinel; humidity sensor; MgAl2O4; electrical properties; powders-chemical preparation;

D O I：

10.1016/S0955-2219(99)00153-3

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

MgAl2O4 spinel powders can be prepared via the oxide one pot synthesis (OOPS) process. Porous ceramic oxide bodies can be produced with these powders and used as humidity-sensing materials. Pellets were characterized by SEM and their electrical properties were measured using impedance spectroscopy in the frequency range from 10(-2) to 10(5) Hz at different relative humidity (RH) levels in the range 4-90%. The spinel pellets made of powder from the OOPS process exhibited good humidity sensitivity with a linear response of the logarithm of resistance with RH in the whole RH range tested. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：91 / 97

页数：7

共 21 条

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ELECTRICAL CONDUCTIVITY OF SILICA GEL IN PRESENCE OF ADSORBED WATER [J].