Thermistor sintered body and temperature sensor element
AssigneeShibaura Electronics Co., Ltd.
InventorsAkitaka Takeuchi, Naohiro Niizeki
Life of this patent
Estimating the term…
Abstract
A thermistor sintered body and a temperature sensor element that can adjust a resistance value in a wider range while suppressing an influence on a B constant. A thermistor sintered body of the present invention includes: a Y2O3 phase as a main phase; and a Y(Cr/Mn)O3 phase as a subphase, wherein a chemical composition of Cr, Mn, Ca, Pr and Y excluding oxygen includes one or two of Cr: 20 mol % or less and Mn: 20 mol % or less, Ca: 1 to 15 mol %, and Pr: 0.5 to 30 mol %, with 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 dissolved in the Y(Cr,Mn)O3 phase or the YCrO3 phase.
Claims9
A thermistor sintered body comprising:
- Y2O3 phase as a main phase;
- a Y(Cr/Mn)O3 phase as a subphase;
- and
- a chemical composition of Cr, Mn, Ca, Pr and Y, excluding oxygen, comprising:
- one or two both of Cr:
- 3 to 20 mol % and Mn:
- 0 to 20 mol %, Ca:
- 1 to 15 mol %, and Pr:
- 0.5 to 30 mol %, with the balance being unavoidable impurities and Y,
- wherein the subphase is a Y(Cr,Mn)O3 phase or a YCrO3 phase, and Pr is dissolved in the Y(Cr,Mn)O3 phase or the YCrO3 phase.
A thermistor sintered body comprising:
- Y2O3 phase as a main phase;
- a Y(Cr,Mn)O3 phase as a subphase;
- wherein Pr is dissolved in the Y(Cr,Mn)O3 subphase;
- and
- a chemical composition of Cr, Mn, Ca, Pr and Y, excluding oxygen,. comprising Cr:
- 3 to 15 mol %, Mn:
- 7 to 12 mol %, Ca:
- 2 to 7 mol %, and Pr:
- 0.5 to 15 mol %, with the balance being unavoidable impurities and Y.
A thermistor sintered body comprising:
- Y2O3 phase as a main phase;
- a YCrO3 phase as a subphase, wherein Pr is dissolved in the YCrO3 phase;
- and
- a chemical composition of Cr, Ca, Pr and Y, excluding oxygen, comprising Cr:
- 10 to 20 mol %, Ca:
- 2 to 8 mol %, and Pr:
- 0.5 to 30 mol %, with the balance being unavoidable impurities and Y.
Dependencies are inferred from the claim text.