Author:
V. A. Drebushchak Novosibirsk State University, Ul. Pirogova 2, Novosibirsk, Russia, 630090
Institute of Geology and Mineralogy SB RAS, Pr. Ac. Koptyuga 3, Novosibirsk, Russia, 630090

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Abstract

Melting peak for metals is described with expressions derived from thermophysical consideration of DSC operation. Three parameters govern the shape of the peak: thermophysical coefficient derived from the DSC design, enthalpy of fusion of a sample, and heating rate. Rigorous evaluation yields rather complex expressions, but simplified expressions can be used in common practice. The peak shape is described by two different expressions for two separate stages in the process of metal melting (1) the melting itself and (2) heat relaxation after the melting completion. The validity of the expressions was demonstrated after the experiments on gallium melting. The thermophysical coefficient is shown be affected to small variations by the changes in sample preparation or experimental conditions (melting Ga, In, Zn).

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  • 3. ISO 11357 Plastics—differential scanning calorimetry. Part 3: determination of temperature and enthalpy of melting and crystallization.

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  • 4. Höhne, GWH, Hemminger, WF, Flammersheim, H-J 2003 Differential scanning calorimetry Springer Berlin 298.

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  • 6. Drebushchak, VA 2011 From electrical analog to thermophysical modeling of DSC. J Therm Anal Calorim 105:495500 .

  • 7. Drebushchak, VA, Shvedenkov, GYu 2003 Thermal Analysis Textbook Novosibirsk State University Novosibirsk 114 (in Russian).

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  • 9. Drebushchak, VA 2004 Calibration coefficient of a heat-flow DSC—part 1. Relation to the sensitivity of a thermocouple. J Therm Anal Calorim 76:941947 .

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  • 10. Drebushchak, VA 2005 Calibration coefficient of a heat-flow DSC—part II. Optimal calibration procedure. J Therm Anal Calorim 79:213218 .

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  • 11. Markin, AV, Letyanina, IA, Ruchenin, VA, Smirnova, NN, Gushchin, AV, Shashkin, DV 2011 Heat capacity and standard thermodynamic functions of triphenylantimony dimethacrylate over the temperature range from (0 to 400) K. J Chem Eng Data 56:36573662 .

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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