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Thermodynamic temperature assignment to the point of inflection of the melting curve of high-temperature fixed points

AutorWoolliams, E. R.; Anhalt, K.; Ballico, M.; Bloembergen, P.; Bourson, F.; Briaudeau, S.; Campos Acosta, Joaquín ; Cox, M. G.; Campo, D. del; Dong, W.; Dury, M. R.; Gavrilov, V.; Grigoryeva, I.; Hernanz, María Luisa ; Yoon, H. W.; Yuan, Z.
Palabras claveTemperature scale
High-temperature fixed points
Thermodynamic temperature
Thermometry
Kelvin
Eutectics
Fecha de publicación22-feb-2016
EditorRoyal Society (Great Britain)
CitaciónPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374 (2016)
ResumenThe thermodynamic temperature of the point of inflection of the melting transition of Re-C, Pt-C and Co-C eutectics has been determined to be 2747.84 ± 0.35 K, 2011.43 ± 0.18 K and 1597.39 ± 0.13 K, respectively, and the thermodynamic temperature of the freezing transition of Cu has been determined to be 1357.80 ± 0.08 K, where the ± symbol represents 95% coverage. These results are the best consensus estimates obtained from measurements made using various spectroradiometric primary thermometry techniques by nine different national metrology institutes. The good agreement between the institutes suggests that spectroradiometric thermometry techniques are sufficiently mature (at least in those institutes) to allow the direct realization of thermodynamic temperature above 1234 K (rather than the use of a temperature scale) and that metal-carbon eutectics can be used as high-temperature fixed points for thermodynamic temperature dissemination. The results directly support the developing mise en pratique for the definition of the kelvin to include direct measurement of thermodynamic temperature. © 2016 The Author(s)
DescripciónE. R. Woolliams et al. ; 23 págs.; 5 figs. 4 tabs.
Versión del editorhttps://doi.org/10.1098/rsta.2015.0044
URIhttp://hdl.handle.net/10261/150385
DOI10.1098/rsta.2015.0044
Identificadoresdoi: 10.1098/rsta.2015.0044
issn: 1364-503X
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