Thermal Conductivity Measurements of Structural

Materials at Cryogenic Temperatures

Assoc. prof. Dr. А.F. Brodnikov, Associate Professor, Novosibirsk Branch, FSAEI FVT Academy for Standardization, Metrology and Certification (FSAEI FVT ASMS), Novosibirsk, Russia, mainbox@asmsnsk.ru

V.I. Kondrat’ev, Researcher, Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences (BINP SB RAS), Novosibirsk, Russia, V.I.Kondratyev@inp.nsk.su

Dr. Prof. V.Ya. Cherepanov, Professor, Novosibirsk Branch, FSAEI FVT ASMS, Novosibirsk, mainbox@asmsnsk.ru

key words

thermal conductivity, measurements, plate method (cylinder), error, cryostat

References

We considered a method and a measuring device designed to determine the thermal conductivity of existing and newly created composite materials. It used in superconducting magnets and other objects of cryogenic technology. We presented the results of investigations of the temperature dependence of the thermal conductivity of new promising materials based on gadolinium, boron and carbon nanotubes in the range from 7 to 300 K.

The obtained measurement results are the basis for the development of a technology for manufacturing new composite materials with given values of thermal conductivity and the nature of its temperature dependence in the region of cryogenic temperatures, we believe. Created measuring system allows for the entrance compliance control of the data on the thermal materials conductivity coming from the manufacturer to its actual values.

1. Rybak N.I., Cherepanov V.Ya., Sheynin E.M., Yamshanov V.A. Pravovoy status natsional'nykh standartov edinstva izmereniy [Legal
Status of National Uniformity Measurement Standards], Standarty i kachestvo, 2015, no. 12, pp. 44–47.
2. Sviridenko V.I., Medvedev V.A., Rybkin N.P., Gorbunova V.G. Teploprovodnost’ kvartsevogo stekla KV pri temperature 2–300 K [Thermal conductivity of quartz glass KV at a temperature of 2–300 K], Izmeritel’naya tekhnika, 1987, no. 5, pp. 34–36.
3. Cherepanov V.Ya. Izmereniya parametrov teploobmena [Measurements of heat transfer parameters], Mir izmereniy, 2005, no. 9, pp. 4–15.
4. Lozinskaya O.M., Rybak N.I., Cherepanov V.Ya., Sheynin E.M., Yamshanov V.A. Gosudarstvennyy pervichnyy etalon edinitsy poverkhnostnoy plotnosti teplovogo potoka [State primary standard of the unit heat flux surface density], Izmeritel’naya tekhnika, 2009, no. 10, pp. 52–55.
5. Brodnikov A.F., Cherepanov V.Ya. Kriogennaya ustanovka dlya izmereniy teploprovodnosti konstruktsionnykh materialov [Cryogenic installation for measuring the thermal conductivity of structural materials], Pribory, 2015, no. 6, pp. 35–38.
6. GOST 8.511–84 GSI. State special standard and state verification scheme for means of measuring the thermal conductivity of solids in the temperature range from 4,2 do 90 K.
7. GOST 8.177–85 GSI. State special standard and state verification scheme for means of measuring the thermal conductivity of solids in the temperature range from 90 do 300 K.