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AssigneesDenso Corporation, Nippon Soken, Inc.
InventorsItsuhei Ogata, Masanori Yamada, Eturo Yasuda, Kaoru Kuzuoka
Estimating the term…
The thermistor portion of a thermistor device consists of a mixed sintered body of aY(Cr0.5Mn0.5)O3.bAl2O3 made of the perovskite-type compound Y(Cr0.5Mn0.5)O3 and Al2O3, or a mixed sintered body of aY(Cr0.5Mn0.5)O3.b(Al2O3+Y2O3) made of Y(Cr0.5Mn0.5)O3, Al2O3 and Y2O3. The mole fractions a and b have the relationships 0.05≦a>1.0, 0<b≦0.95 and a+b=1. This is required to obtain a thermistor device that has stable characteristics and exhibits a small change in its resistance value, even in a heat history from room temperature to 1000° C. or the like, and also has a resistance value of 50Ω to 100 kΩ in the temperature range from room temperature to 1000° C.
A thermistor device comprising a mixed sintered body of (M1M2)O3·Al2O3 consisting of M1M2)O3 and Al2O3, wherein M1 is at least one or more elements selected from the elements of Group 2A or Group 3A of the periodic table excluding La, and M2 is at least one or more elements selected from the elements of Group 2D, Group 3 B, Group 4A, Group 5A, Group 6A, Group 7A or Group 8 of the periodic table.
Dependencies are inferred from the claim text.