Statistics – Applications
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mass.work..121g&link_type=abstract
In JPL, Proceedings of the Workshop on Microtechnologies and Applications to Space Systems p 121-122(SEE N94-29767 08-31)
Statistics
Applications
Enthalpy, Heat Measurement, Heat Transmission, Phase Transformations, Planetary Surfaces, Calorimeters, Effluents, Space Exploration, Temperature Gradients, Temperature Measurement, Thermal Analysis
Scientific paper
Differential Scanning Calorimetry (DSC) is the quantitative measurement of the enthalpic response of a material to a systematic change in temperature. In practice, the heat flow into or outward from a sample is measured as the sample is heated or cooled at a carefully controlled rate. DSC superficially resembles, but is not the same as differential thermal analysis (DTA), which is the measurement of temperature differences between a sample and reference material as the pair is heated or cooled. The fundamental properties measured by DSC are enthalpies and temperatures of phase transitions and constant-pressure heat capacities. Depending on instrument design and the nature of the sample, high-quality DSC analyses can be obtained on only a few milligrams of solid materials. DSC requires direct contact with the sample and generally degrades, if not destroys, the sample as a consequence of heating. In laboratory applications, it is common to subject the gaseous effluent from the DSC to analysis by a separate evolved-gas analyzer (EGA).
Gooding James L.
Ming Douglas W.
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