Compositions – Electrically conductive or emissive compositions – Radioactive material containing
Patent
1973-07-05
1976-04-13
Wilbur, Maynard R.
Compositions
Electrically conductive or emissive compositions
Radioactive material containing
252518, 252520, 252521, H01C 100
Patent
active
039502732
ABSTRACT:
A thermistor material of between 99% and 50% by weight of praseodymium oxide and 1 to 50% by weight of zirconium oxide provides a stable thermistor with desired resistance value changes over a temperature range of 100.degree.C to 600.degree.C. Other selected oxides may be used in place of zirconium. Small amounts of indium or gallium oxides can also be added to the mixture to lower the resistivity and temperature coefficient of resistance.
REFERENCES:
patent: 3235655 (1966-02-01), Counts et al.
Ionic and Electronic Conductivity of Zirconium Oxide-PrO.sub.1.83 Systems, Chemical Abstracts, 1968, Vol. 68, No. 108453t.
Electrical Conductivity of Solid Oxide Systems, Chemical Abstracts, "The ZrO.sub.2 -PrO.sub.1.83 System," Vol. 67, 1967, No. 47755.
Zirconia-Praseodymium Oxide and Zirconia-Terbium Oxide Systems at Elevated Temperatures, Chemical Abstracts, Vol. 69, 1968, No. 13330.
Birmiel H. A.
Hill Alfred C.
International Standard Electric Corporation
Lombardi, Jr. Menotti J.
O'Halloran John T.
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