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Your search keyword '"Matveyev, M."' showing total 2 results
Start Over Author "Matveyev, M." Topic eutectics
2 results on '"Matveyev, M."'

1. Comparison of Co-C eutectic fixed-point cells between VNIIM and VNIIOFI.

Author

Sild, Y., Khlevnoy, B., Matveyev, M., Grigorieva, I. A., and Fuksov, V. M.

Subjects
EUTECTICS, MELTING points, TEMPERATURE measurements, RADIATION pyrometers, PYROMETERS
Abstract

Two national metrological institutes of the Russian Federation, VNIIM and VNIIOFI, take part in the international research plan of CCT WG5 for investigation of high-temperature fixed points (HTFP). In the framework of this CCT-WG5 HTFP Research Plan the both institutes have designed and built independently cobalt-carbon (Co-C) eutectic radiation cells. The comparison of the Co-C cells developed by the institutes was carried out with the aim of determination of a difference in the melting temperature due to difference in the constructional characteristics of the cells. The radiance-mode radiation thermometers with central wavelength nearby 650 nm were used for the fixed-point melting temperature measurements. The article presents preliminary results of the comparison, which shows agreement between melting temperature of the compared cells within 20 mK. The details of the comparison are reported. [ABSTRACT FROM AUTHOR]

Published
2013
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2. Comparison of Pyrometric Co-C and Re-C Eutectic-Point Cells Between VNIIM and LNE-Cnam.

Author

Sadli, M., Matveyev, M., Bourson, F., Fuksov, V., Sild, Yu., and Pokhodun, A.

Subjects
*HIGH temperatures, *EUTECTICS, *FUSION (Phase transformation), *FROST, *TEMPERATURE
Abstract

VNIIM and LNE-Cnam have collaborated for several years in the field of metal-carbon eutectic points. The first action was the construction of a Pt-C cell at VNIIM using the LNE-Cnam technique and cell design. The Pt-C cells constructed in each of the laboratories were studied and compared in the past. The two laboratories have followed their collaboration work by studying and comparing Co-C and Re-C cells. Different designs and filling techniques were applied. The melting and freezing temperatures observed on the Re-C cells from the two laboratories were measured at VNIIM. The Re-C and Co-C cells were compared at LNE-Cnam in the high-temperature blackbody furnace HTBB 3200pg which was thermally optimized before the measurements. The results of the comparison showed that the Co-C cells were comparable at the level of 0.03 K while the Re-C cells showed a large difference of melting temperatures of about 0.7 K. In this article, the cells used and the methodology of the comparison will be described. The temperature differences that were obtained at the highest temperature will be examined to propose an explanation for this temperature difference. [ABSTRACT FROM AUTHOR]

Published
2011
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