Thermistor device thermistor device manufacturing method and temperature sensor
US6306315A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 25, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Feb 25, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/624
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The thermistor portion of a thermistor device consists of a mixed sintered body of aY(Cr.sub.0.5 Mn.sub.0.5)O.sub.3.bAl.sub.2 O.sub.3 made of the perovskite-type compound Y(Cr.sub.0.5 Mn.sub.0.5)O.sub.3 and Al.sub.2 O.sub.3, or a mixed sintered body of aY(Cr.sub.0.5 Mn.sub.0.5)O.sub.3.b(Al.sub.2 O.sub.3 +Y.sub.2 O.sub.3) made of Y(Cr.sub.0.5 Mn.sub.0.5)O.sub.3, Al.sub.2 O.sub.3 and Y.sub.2 O.sub.3. The mole fractions a and b have the relationships 0.05.ltoreq.a>1.0, 0<b.ltoreq.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.degree. C. or the like, and also has a resistance value of 50.OMEGA. to 100 k.OMEGA. in the temperature range from room temperature to 1000.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.