Thermocouples of molybdenum and iridium alloys for more stable v

Details Thermocouples of molybdenum and iridium alloys for more stable v Thermocouples of molybdenum and iridium alloys for more stable v

1977-11-21

1978-09-05

Sebastian, Leland A.

Batteries: thermoelectric and photoelectric

Thermoelectric

Having particular thermoelectric composition

136202, H01L 3520

Patent

active

041117182

ABSTRACT:
Thermocouples of the present invention provide stability and performance reliability in systems involving high temperatures and vacuums by employing a bimetallic thermocouple sensor wherein each metal of the sensor is selected from a group of metals comprising molybdenum and iridium and alloys containing only those two metals. The molybdenum, iridium thermocouple sensor alloys provide bare metal thermocouple sensors having advantageous vapor pressure compatibilities and performance characteristics. The compatibility and physical characteristics of the thermocouple sensor alloys of the present invention result in improved emf, temperature properties and thermocouple hot junction performance. The thermocouples formed of the molybdenum, iridium alloys exhibit reliability and performance stability in systems involving high temperatures and vacuums and are adaptable to space propulsion and power systems and nuclear environments.

REFERENCES:
patent: 3836402 (1974-09-01), Zysk
Troy et al., American Society for Metal Transactions, vol. 42, 1950, pp. 1131 to 1149.
Nadler et al., Review of Scientific Instruments, vol. 32, No. 1, Jan. 1961, pp. 45 to 47.
Shunk, Constitution of Binary Alloys, Second Supplement,1969, McGraw-Hill Book Co., New York, p. 459.
Javitz, Electro-Technology, vol. 68, Jul. 1961, pp. 11 to 12.

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