Semiconductor ceramics refers to the semiconductor characteristics of the conductivity of about 10-6~105/m ceramic semiconductor ceramic conductivity due to external conditions (temperature, light, electric field, atmosphere and temperature, etc.) changes and significant changes, so you can change the physical quantity of the external environment into electrical signals, made of various uses of sensitive components

一，Thermal-sensitive ceramics: also known as thermistor ceramics, refers to the conductivity with the temperature is a significant change of ceramics thermal-sensitive semiconductor ceramic tube, thermal-sensitive ceramics is mainly used for temperature compensation temperature measurement temperature control fire detection overheat protection and color TV demagnetization and other aspects

二，Photosensitive ceramics: refers to the ceramics with photoconductivity or photoelectrochemical reaction, such as cadmium sulfide telluride, cadmium arsenic, gallium phosphide, indium bismuth germanate, or single crystal when the light hit its surface when the conductivity increases, mainly used for automatic control of light switches and solar cells, semiconductor ceramics

三，Gas sensitive ceramics zirconia semiconductor ceramics

Gas-sensitive ceramics: refers to the conductivity of the ceramic with different types of contact gas molecules such as zinc oxide, tin oxide, iron oxide, vanadium oxide, zirconia, nickel oxide, cobalt oxide and other systems of ceramics are mainly used for leakage detection of different gases, disaster prevention, alarm and measurement

四，Four humidity sensitive ceramics: refers to the conductivity of ceramics with significant changes in humidity, such as ferric oxide, titanium oxide, potassium oxide, magnesium iron chromate, titanium oxide and zinc oxide, lithium oxide, vanadium oxide and other systems of ceramics their conductivity is particularly sensitive to water, suitable for humidity measurement and control