Development of a high-temperature differential scanning calorimeter equipped with a triple-cell system
1993; Elsevier BV; Volume: 223; Linguagem: Inglês
10.1016/0040-6031(93)80114-p
ISSN1872-762X
AutoresYoichi Takahashi, Masami Asou,
Tópico(s)Thermodynamic and Structural Properties of Metals and Alloys
ResumoA new differential scanning calorimeter (DSC) for heat capacity measurements up to 1500 K has been developed. In order to overcome difficulties encountered in high-temperature heat capacity measurements with conventional DSC equipment, two new concepts were adopted for the design of this apparatus: a "triple-cell" system and triple-adiabatic temperature control. The heat capacities of Mo, Pt and UO2 were determined from 300 to 1500 K to test the new apparatus. The heat capacities of Ni and Ti, which are known to have phase transitions at 631 K and at around 1160K, respectively, were also measured. The precision of the apparatus was estimated to be within ± 3%. A comparison of the results obtained by two analytical methods, the enthalpy method and the scanning method, is also made.
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