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Yttria and Dysprosia as High-Temperature Thermistor Materials.

PB196612

Publication Date	1970
Personal Author	Hyde, G. R.; Maust, E. E.; Furlong, L. R.
Page Count	12
Abstract	Sintered yttria and sintered dysprosia can be used to make single-component thermistors having typical thermistor geometries and operable in the temperature range 500 to 1,200C. However, at these temperatures, instability of platinum electrodes can contribute a slight aging effect if the thermistor is kept near 1,200C for long periods. Typical characteristics at 500C for an yttria disk thermistor 12 mm in diameter and 2 mm thick are a resistance of 12.4 megohms and a temperature coefficient of resistance of -3.8 percent per degree C. Typical characteristics at 500C for a dysprosia thermistor of the same dimensions are a resistance of 1.84 kohms and a temperature coefficient of resistance of -1.6 percent per degree C. (Author)
Keywords	Thermistors Rare earth compounds Yttrium oxides Dysprosium compounds Oxides Fabrication Electrodes Electrical properties Electrical resistance Temperature measuring instruments Rare earth oxides Dysprosium oxides
Source Agency	Invalid Source Agency Code
NTIS Subject Category	49G - Resistive, Capacitive, & Inductive Components 94K - Laboratory & Test Facility Design & Operation
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197105

Yttria and Dysprosia as High-Temperature Thermistor Materials.

Yttria and Dysprosia as High-Temperature Thermistor Materials.
PB196612

Publication Date	1970
Personal Author	Hyde, G. R.; Maust, E. E.; Furlong, L. R.
Page Count	12
Abstract	Sintered yttria and sintered dysprosia can be used to make single-component thermistors having typical thermistor geometries and operable in the temperature range 500 to 1,200C. However, at these temperatures, instability of platinum electrodes can contribute a slight aging effect if the thermistor is kept near 1,200C for long periods. Typical characteristics at 500C for an yttria disk thermistor 12 mm in diameter and 2 mm thick are a resistance of 12.4 megohms and a temperature coefficient of resistance of -3.8 percent per degree C. Typical characteristics at 500C for a dysprosia thermistor of the same dimensions are a resistance of 1.84 kohms and a temperature coefficient of resistance of -1.6 percent per degree C. (Author)
Keywords	Thermistors Rare earth compounds Yttrium oxides Dysprosium compounds Oxides Fabrication Electrodes Electrical properties Electrical resistance Temperature measuring instruments Rare earth oxides Dysprosium oxides
Source Agency	Invalid Source Agency Code
NTIS Subject Category	49G - Resistive, Capacitive, & Inductive Components 94K - Laboratory & Test Facility Design & Operation
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197105