Determination of Emissivities with a Differential Scanning Calorimeter
R. N. Rogers, E. D. Morris
Emissivity changes during a determination can cause large errors in heats of decomposition or transition, as determined using a Perkin-Elmer Differential Scanning Calorimeter. Methods for reducing or eliminating such errors are discussed, and a differential method for determining emissivity coefficients with the Differential Scanning Calorimeter is presented. © 1966, American Chemical Society. All rights reserved.
Materials
Curve 1
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Aluminum; electrolytically oxidized to a thickness of 0.25 µm.
Curve 2
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Similar to above specimen and conditions except 0.35 µm thick.
Curve 3
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Similar to above specimen and conditions except 0.5 µm thick.
Curve 4
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Similar to above specimen and conditions except 0.65 µm thick.
Curve 5
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Similar to above specimen and conditions except 1.0 µm thick.
Curve 6
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Similar to above specimen and conditions except 3.0 µm thick.
Curve 7
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Similar to above specimen and conditions except 5.0 µm thick.
Curve 8
Temperature Range, K: 400
Geometry θ': ~0°
Composition (weight percent), Specifications and Remarks: Similar to above specimen and conditions except 7.0 µm thick.