THERMISTOR SINTERED BODY AND TEMPERATURE SENSOR ELEMENT: Fid-Bau Portal

THERMISTOR SINTERED BODY AND TEMPERATURE SENSOR ELEMENT

TAKEUCHI AKITAKA / NIIZEKI NAOHIRO

To provide a thermistor sintered body and a temperature sensor element such that a resistance value can be adjusted in a wider range while minimizing the effect on a B constant. [Solution] This thermistor sintered body comprises a sintered body which includes a Y2O3 phase as a main phase and a Y(Cr/Mn)O3 phase as a subphase. The chemical composition of Cr, Mn, Ca, Pr, and Y excluding oxygen comprises one or both of Cr: 20 mol% or less and Mn: 20 mol% or less, Ca: 1 to 15 mol%, and Pr: 0.5 to 30 mol%, the balance being unavoidable impurities and Y. In the present invention, preferably, the subphase is a Y(Cr,Mn)O3 phase or a YCrO3 phase, and Pr is soluble in the Y(Cr,Mn)O3 phase or the YCrO3 phase.

本发明提供能够减小对B常数造成的影响且在更广的范围内调整电阻值的热敏电阻烧结体及温度传感器元件。本发明的热敏电阻烧结体由具备作为主相的YO相和作为副相的Y(Cr/Mn)O相的烧结体制成，除氧以外的Cr、Mn、Ca、Pr及Y的化学组成为：Cr：20摩尔％以下及Mn：20摩尔％以下中的1种或2种、Ca：1～15摩尔％、Pr：0.5～30摩尔％，剩余部分由不可避免的杂质及Y制成。在本发明中，优选副相为Y(Cr、Mn)O相或YCrO相，Pr固溶于Y(Cr、Mn)O相或YCrO相。

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