Humidity Dependence of Resistivity of Potassium-Modified Ferric Oxide Ceramics

摘要: This paper is concerned with the humidity dependence of resistivity potassium-modified ferric oxide ceramics which show bulk-type sensitivity for ambient humidity. The remarkable on humidity, especially in low range less than 50% relative and at an temperature from 0°to 100°C. effects composition, sintering temperature, microstructure, reaction product are discussed. due to ionic conductivity or on, small. grains potassium-(β+β") hematite caused by adsorption diffused moisture through pore sintered discs.