Abstract
The general statement that a temperature fixed-point cell will show better melting and freezing plateaux with better temperature uniformity along the dimensions of the fixed point is understood to be valid for metal-carbon (M-C) eutectics as well as for pure metal fixed points. In this article, it is shown that improved temperature uniformity in the central part of the high-temperature blackbody BB3200pg (HTBB), where the M-C fixed point is implemented, results in flatter and longer plateaux. Pyrolitic graphite rings, clamped together by a spring, form the heated cavity of the HTBB. As a first step, the relative electrical resistivity of each pyrolitic graphite ring was measured using a method advised by the furnace manufacturer. Next, the ring positions were optimized, taking into account their relative resistivities, in order to obtain a more homogeneous temperature distribution. Subsequent measurement of the temperature uniformity at the furnace walls confirmed the improvement. Measuring the melting plateaux of the Pt-C eutectic with different arrangements of the rings, and thereby operating the fixed-point cell in different temperature distributions, confirmed the influence of the temperature distribution on the plateau shape, with the best plateau shape corresponding to the most homogeneous temperature distribution.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Y. Yamada, H. Sakate, F. Sakuma, A. Ono, in Proceedings of TEMPMEKO ’99, 7th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by J.F. Dubbeldam, M.J. de Groot (Edauw Johannissen bv, Delft, 1999), pp. 535–540
Woolliams E.R., Machin G., Lowe D.H. and Winkler R. (2006). Metrologia 43: R11
M. Sadli, J. Fischer, Y. Yamada, V.I. Sapritsky, D.H. Lowe, G. Machin, in Proceedings of TEMPMEKO 2004, 9th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by D. Zvizdic (FSB/LPM, Zagreb, Croatia, 2004), pp. 341–347
Yamada Y. (2005). MAPAN—J. Metrol. Soc. India 20: 183
G. Machin, P. Bloembergen, J. Hartmann, M. Sadli, Y. Yamada, in Proceedings of TEMPMEKO 2007, Int. J. Thermophys. 28, 1976 (2007). doi:10.1007/s10765-007-0250-7
P. Bloembergen, Y. Yamada, N. Yamamoto, J. Hartmann, in Temperature, Its Measurement and Control in Science and Industry, vol. 7, AIP Conf. Proc. 684, ed. by D.C. Ripple (AIP, Melville, New York, 2003) pp. 291–296
Sapritsky V.I., Khlevnoy B.B., Khromchenko V.B., Lisiansky B.E., Mekhontsev S.N., Melenevsky U.A., Morozova S.P., Prokhorov A.V., Samoilov L.N., Shapoval V.I., Sudarev K.A. and Zelener M.F. (1997). Appl. Optics 36: 5403
Sapritsky V.I., Khlevnoy B.B., Khromchenko V.B., Mekhontsev S.N., Melenevsky U.A., Morozova S.P., Prokhorov A.V., Samoilov L.N., Shapoval V.I., Zelener M.F. and SudarevK.A. (1997). Optical Radiation Measurements III, Proc. SPIE 2815: 2
B.B. Khlevnoy, V.I. Sapritsky, M.L. Samoylov, Y. Yamada, in Proceedings of TEMPMEKO 2001, 8th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by B. Fellmuth, J. Seidel, G. Scholz (VDE Verlag, Berlin, 2002), pp. 513–518
J. Hartmann, S. Schiller, R. Friedrich, J. Fischer, in Proceedings of TEMPMEKO 2001, 8th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by B. Fellmuth, J. Seidel, G. Scholz (VDE Verlag, Berlin, 2002), pp. 227–232
B. Khlevnoy, M. Sakharov, S. Ogarev, V. Sapritsky, Y.Yamada, K. Anhalt, in Proceedings of TEMPMEKO 2007, Int. J. Thermophys. 29, 271 (2008). doi:10.1007/s10765-007-0347-z
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sadli, M., Anhalt, K., Bourson, F. et al. Thermal Effects in the HTBB-3200pg Furnace on Metal-Carbon Eutectic Point Implementation. Int J Thermophys 30, 69–76 (2009). https://doi.org/10.1007/s10765-008-0479-9
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10765-008-0479-9