Reference material for temperature calibration of differential scanning calorimeters above 1400 °C

• Published in: Journal of thermal analysis and calorimetry Vol. 128; no. 3; pp. 1547 - 1554
• Main Authors: Zorzi, J. E., Segadães, A. M., Perottoni, C. A.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.06.2017; Springer; Springer Nature B.V
• Subjects: Aluminum; Analytical Chemistry; Calibration; Calorimetry; Chemistry; Chemistry and Materials Science; Crucibles; Differential scanning calorimetry; Heat measurement; Inorganic Chemistry; Measurement Science and Instrumentation; Olivine; Phase transitions; Physical Chemistry; Platinum; Polymer Sciences; Reference materials; Signal quality; Temperature; Platinum crucible; Reference material; High temperature; DSC; Calcio-olivine
• ISSN: 1388-6150; 1588-2926
• DOI: 10.1007/s10973-016-6048-8

Platinum crucible pans are widely used for differential scanning calorimetry (DSC) at temperatures above the aluminum melting point (about 660 °C) due to good signal quality, chemical inertness and easiness of cleaning. However, reference materials commonly used for the calibration of DSC equipment operating with platinum pans exhibit phase transition temperatures no higher than about 1000 °C. In this work, the solid–solid, reversible, α H ′ → α phase transition of calcio-olivine, Ca 2 SiO 4 , was found to produce a marked DSC peak with an onset temperature of 1453 - 2 + 1 ∘ C and a relatively small hysteresis. This compound is compatible with platinum crucibles and fulfills the requirements to be used as reference material for high-temperature calibration of differential scanning calorimeters.