The Emissivity of Transition Metals in the Infrared

[+] Author and Article Information
R. A. Seban

University of California at Berkeley, Berkeley, Calif.

J. Heat Transfer 87(2), 173-176 (May 01, 1965) (4 pages) doi:10.1115/1.3689067 History: Received April 17, 1964


Absorptivities of iron, nickel, and platinum are presented for room temperature and emissivities for temperatures of the order of 2000 deg R for wavelengths from 1 to 15 microns. These are compared to the predictions made from Roberts’ theory for absorption by two sets of charge carriers, using the parameters that he deduced, and favorable correspondence is achieved with the absorptivity of iron and of nickel at room temperature. Following his postulate that all of the change in electrical conductivity that is consequent to the temperature rise occurs in the more important set of carriers, adequate predictions of the emissivity at high temperature are obtained as well.

Copyright © 1965 by ASME
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