Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-stability negative temperature coefficient thermistor material and preparation method thereof
The invention relates to a high-stability negative temperature coefficient (NTC) thermistor material and a preparation method thereof, the material is prepared by taking La2O3, MnO2, Fe2O3 and SiO2 as raw materials through a solid phase method, grinding, calcining, forming and high-temperature sintering, and a La-Mn-Fe-Si-O ceramic NTC thermistor with a perovskite structure is obtained. The electrical property parameters are as follows: the resistivity rho 25 DEG C is 6.13-65.38 omega.cm, the material constant B25/50 is 340.24-1751.78 K, and the resistance change rate R/R is less than or equal to 0.39%. The NTC thermistor can be applied to temperature monitoring and control in an environment with the temperature of-200 DEG C to 125 DEG C, has obvious NTC characteristics, is wide in temperature measurement range, stable in material performance and good in ageing resistance, and is suitable for the temperature detection fields of low temperature, deep sea, aerospace and the like.
本发明涉及一种高稳定负温度系数热敏电阻材料及其制备方法，该材料是由La2O3、MnO2、Fe2O3和SiO2为原料，采用固相法制备，经过研磨、煅烧、成型、高温烧结制成，得到钙钛矿结构的La‑Mn‑Fe‑Si‑O陶瓷NTC热敏电阻。其电性能参数：电阻率ρ25℃＝6.13‑65.38Ω·cm，材料常数B25/50＝340.24‑1751.78 K，电阻变化率∆R/R0≤0.39%。本发明所述的NTC热敏电阻可应用于温度‑200℃~125℃环境下的温度监测和控制，具有明显的NTC特性，测温范围广，材料性能稳定，抗老化性好，适用于低温、深海、航空航天等温度探测领域。
High-stability negative temperature coefficient thermistor material and preparation method thereof
The invention relates to a high-stability negative temperature coefficient (NTC) thermistor material and a preparation method thereof, the material is prepared by taking La2O3, MnO2, Fe2O3 and SiO2 as raw materials through a solid phase method, grinding, calcining, forming and high-temperature sintering, and a La-Mn-Fe-Si-O ceramic NTC thermistor with a perovskite structure is obtained. The electrical property parameters are as follows: the resistivity rho 25 DEG C is 6.13-65.38 omega.cm, the material constant B25/50 is 340.24-1751.78 K, and the resistance change rate R/R is less than or equal to 0.39%. The NTC thermistor can be applied to temperature monitoring and control in an environment with the temperature of-200 DEG C to 125 DEG C, has obvious NTC characteristics, is wide in temperature measurement range, stable in material performance and good in ageing resistance, and is suitable for the temperature detection fields of low temperature, deep sea, aerospace and the like.
本发明涉及一种高稳定负温度系数热敏电阻材料及其制备方法，该材料是由La2O3、MnO2、Fe2O3和SiO2为原料，采用固相法制备，经过研磨、煅烧、成型、高温烧结制成，得到钙钛矿结构的La‑Mn‑Fe‑Si‑O陶瓷NTC热敏电阻。其电性能参数：电阻率ρ25℃＝6.13‑65.38Ω·cm，材料常数B25/50＝340.24‑1751.78 K，电阻变化率∆R/R0≤0.39%。本发明所述的NTC热敏电阻可应用于温度‑200℃~125℃环境下的温度监测和控制，具有明显的NTC特性，测温范围广，材料性能稳定，抗老化性好，适用于低温、深海、航空航天等温度探测领域。
High-stability negative temperature coefficient thermistor material and preparation method thereof
一种高稳定负温度系数热敏电阻材料及其制备方法
ZHAO PENGJUN (Autor:in) / JIN XIAOTIAN (Autor:in) / CHANG AIMIN (Autor:in)
15.03.2024
Patent
Elektronische Ressource
Chinesisch
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