ISSN: 1945-7553
Page Count: 7

Electromotive Force Stability of Nicrosil-Nisil®

Wang, TP
Director of research and vice president of engineering and research, AMAX Specialty Metals Corp., Alloy Division, Newark,N.J.

Starr, CD
Director of research and vice president of engineering and research, AMAX Specialty Metals Corp., Alloy Division, Newark,N.J.

Abstract

Early data on the aging characteristics of experimental heats of Nicrosil (Ni-14.2Cr-1.4Si-0.1Mg) and Nisil® (Ni-4.2Si-0.1Mg) versus Type K thermoelements are reviewed. The electromotive force stability of Nicrosil-Nisil in 1.6-mm (0.064-in.), 0.8-mm (0.032-in.), and 0.3-mm (0.0126-in.) diameter wire at 500°C in air up to 200 h is obtained in situ and is compared with that of Type K thermoelements of the same size. The mechanism of EMF changes is discussed.

Keywords:
thermocouples, electric potential, nickel alloys, aging, neutron diffraction, Nicrosil, Nisil, ordering, oxidation, resistance, resistivity, short-range, ordering, stability, thermal electromotive force, thermocouples, thermoelements, Type K

Paper ID: JTE11612J
DOI: 10.1520/JTE11612J
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