Thermal expansion of artificial graphites in the temperature range 293в€’1650 K
S.V. Stankus1, O.S. Yatsuk1, E.I. Zhmurikov2, L. Tecchio3
1 Kutateladze Institute of Thermophysics SB RAS
2 Budker Institute of Nuclear Physics SB RAS
3 Istituto Nazionale di Fisica Nucleare
stankus@itp.nsc.ru
Keywords: coefficient of thermal expansion, graphite, solid state, high temperatures
Pages: 463-468
Abstract
The article presents the results of studying the thermal expansion of MPG-6 and AXF-5Q graphites and graphite composite based on 13С isotope in the temperature range 293−1650 K. Measurements were performed with dilatometric method in DIL-402C unit manufactured by NETZSCH (Germany), with the accuracy of (1÷4)×10−7 K−1. Approximation dependences of average integral coefficient of linear expansion on temperature have been obtained and reference tables calculated. It is shown that the coefficient of thermal expansion of 13С composite is much lesser than for MPG-6 and AXF-5Q. The explanation of this phenomenon is provided in the paper.
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