EFFECTS OF ALKALINE OXIDE ADDITIVES ON THE MICROSTRUCTURE AND HUMIDITY SENSITIVITY OF MGCR2O4-TIO2

被引：50

作者：

KIM, TY ^{[1
]}

LEE, DH ^{[1
]}

SHIM, YC ^{[1
]}

BU, JU ^{[1
]}

KIM, ST ^{[1
]}

机构：

[1] GOLDSTAR CENT RES LABS,LAB 2,SEOUL 137140,SOUTH KOREA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1992年 / 9卷 / 03期

关键词：

D O I：

10.1016/0925-4005(92)80220-R

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We have investigated the effects of alkaline oxide additives such as Na2O, K2O and Li2O on the microstructure and humidity sensitivity of MgCr2O4-TiO2. The addition of Na2O and K2O, especially Na2O, helps to reduce the pore size through the formation of very small soluble phases, which consequently improves the humidity-sensing characteristics, such as the sensitivity, linearity and hysteresis. However, Li2O causes grain overgrowth and consequently the formation of large pores, leading to poor humidity sensitivity.

引用

页码：221 / 225

页数：5

共 13 条

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