EKHI
The open database of optical and radiative data
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Publications: 169 Total entries: 1362
The Spectral Emissivity of Iron and Cobalt
H. B. Wahlin, Harry W. Knop Jr.
The spectral emissivity of iron and cobalt has been determined as a function of the temperature. Sharp, definite changes in the emissivity have been observed in iron at the A3 and A4 point and at the Curie temperature for cobalt. …
2 entries
COBALT: Normal spectral emittance
Emissivities and temperature scales of the iron group
H. B. Wahlin, Rufus Wright
The temperature scales have been determined for well-degassed specimens of the iron group and from these the emissivity for λ = 0.667μ is calculated. Over the range of temperatures covered the emissivity is nearly a constant except at the A3 …
2 entries
COBALT: Normal spectral emittance
The variation with temperature of the spectral emissivities of iron, nickel and cobalt
L. Ward
The spectral emissivities of iron, nickel and cobalt have been measured over a wavelength range 1.0μ to 3.0μ and at temperatures between 650°and 1350°C. The results show anomalies in the cases of iron and cobalt occurring at temperatures in the …
51 entries
NICKEL: Normal spectral emittance
The thermionic properties of chromium
H. B. Wahlin
The spectral emissivity, the temperature scale, and the electron work function of chromium have been determined. The emissivity is found to be 0.334 for a wave-length of 6690A and the value found for the electron work function is 4.60 volts …
1 entries
Total emissivities and absorptivities of some commercial surfaces at room and liquid-nitrogen temperatures
F. J. Zimmermann
The heat transferred by radiation was measured between surfaces at room temperature and liquid-nitrogen temperature. The surfaces used were various combinations of electroplated gold and silver and polished copper sheet. From the test data, the approximate total emissivities of the …
9 entries
GOLD: Hemispherical total emittance
COPPER: Hemispherical integrated absorptance, Hemispherical total emittance
Emissivity at 0.65 micron of silicon and germanium at high temperatures
F. G. Allen
No abstract provided
2 entries
GERMANIUM: Normal spectral emittance
An apparatus for the measurement of the total normal thermal emissivity of sheet materials in the temperature range 140 to 500°F
Paul F. Mcdermott
A description is given of an apparatus for measuring the total normal thermal emissivity of sheet materials up to 3/8 inches in thickness at temperatures from 140 to 500°F without contact or damage to the surfaces viewed. An analysis of …
6 entries
COPPER: Normal total emittance
CHROMIUM: Normal total emittance
ALUMINUM: Normal total emittance
ZINC: Normal total emittance
IRON: Normal total emittance
The total emissivity of various materials at 100-500°C
B. T. Barnes, W. E. Forsythe, E. Q. Adams
No abstract provided
15 entries
ALUMINUM: Normal total emittance
TIN: Normal total emittance
[COPPER + ZINC] ALLOYS: Normal total emittance
SILVER: Normal total emittance
TUNGSTEN: Normal total emittance
COPPER: Normal total emittance
NICKEL: Normal total emittance
CHROMIUM: Normal total emittance
IRON: Normal total emittance
ZINC: Normal total emittance
Spectral emissivity of 99.7% aluminium between 200 and 540°C
P. M. Reynolds
Results are given for surfaces of roughness 3 μ in., 115 μ in. and anodized aluminium within the wavelength range 1 to 14 μ. The spectral emissivity varied strongly with surface roughness and oxidation, but only slightly with temperature. Typical …
11 entries
ALUMINUM CONVERSION COATINGS: Normal spectral emittance