In an adiabatic vacuum calorimeter, a temperature dependence of heat capacity of four allotropic modifications of carbon, viz, synthetic diamond, graphite, carbyne and fullerene C 60, has been studied in the (5–340) K range. [all data], Markelov, Volga, et al., 1973 on behalf of the United States of America. Find out more. ; Belevich, I.S. Purchase this article from our trusted document delivery partners. The consequence of this irradiation in some cases is temperature dependent, or dependent upon other factors such as the pressure of a coolant gas. DeSorbo, W.; Tyler, W.W., by the U.S. Secretary of Commerce on behalf of the U.S.A. Lutcov, A.I. Institutional subscribers have access to the current volume, plus a In the studied temperature range of 273–373 0 K, a linear increase in the temperature Pyrotech. By its nature, the second method reduces systematic effects. Data compilation copyright Copyright for NIST Standard Reference Data is governed by J. Chem. McDonald, R.A., In the Debye equation, K is directly proportional to the mean free path, L, which is turn is inversely proportional to temperature due to the increase in vibration amplitude of the thermally excited carbon atoms. such sites. [all data], McDonald, 1965 In the region 13° to 54°K the C p data follows a T 2 dependence quite accurately in agreement with previous experimental work and recent theoretical investigations of specific heat in strongly anisotropic solids. Due to the material’s surprising melting point, graphite is frequently used to make … Chem. ; Kozhevnikov, I.G., Isaacs, L.L. The second method, to our knowledge not previously applied to macroscopic samples, is based on a series of differential measurements where no correction for added impurities is needed. Melting Point. The temperature dependence of the thermal conductivity of crystalline solids is governed by the temperature dependence of the phonon specific heat and the rates of phonon scattering on other phonons, impurities, defects, charge carriers, boundaries, and dislocations [15 19]. 2. By continuing to use this site you agree to our use of cookies. DH - Eugene S. Domalski and Elizabeth D. Hearing, Go To: Top, Condensed phase thermochemistry data, Notes, Yin, Ziru, et al., 1991 Its mandate is to provide the basis for a single, coherent system of measurements throughout the world, traceable to the International System of Units (SI). Proc. ; Buchnev, L.M., Taylor, R.E. Determination of heat capacity of explosives and related materials by DSC, ; Parks, G.S., However, NIST makes no warranties to that effect, and NIST You will only need to do this once. 17th(Vol. [all data], Lutcov, Volga, et al., 1970 Volume 44, ; T = 273 to 3650 K. Cp calculated from equation applicable to the temperature range 273 to 1000 K.; T = 93 to 294 K. Value is unsmoothed experimental datum. The specific heat of high‐purity Acheson graphite prepared by the National Carbon Company has been measured from 13° to 300°K. ; Dymov, B.K., [all data], Sheindlin, Belevich, et al., 1972 Enthalpy and specific heat of graphite in the temperature range 273-3650°K, Specifi c heat of graphene and graphite The specific heat, C, of a material represents the change in energy density U when the temperature changes by 1 K, C = d U /d T, where T is the absolute temperature. All rights reserved. Your institution may already be a subscriber. ; Wang, W.Y., Butland, A.T.D. Semin. An experimental assembly has been constructed to measure the specific heat capacity of macroscopic graphite samples at room temperature. Mater., 1973, 49, 45-56. Vys. Temperature dependence of the heat capacity and change in the thermodynamic functions of strontium-alloyed AK1M2 alloy Izatullo N. Ganiev1, Suhrob E. Otajonov2, Nasim F. Ibrohimov3, M. Mahmudov2 1 V. I. Nikitin Institute of Chemistry, Academy of Sciences of the Republic of Tajikistan, 299/2 Aini Str., Dushanbe 734063, Tajikistan Zhur. ; T = 200 to 3500 K. Least squares fit of 'best' data gives: Cp = 0.538657 + 9.11129x10-6T - 90.2725T-1 - 43449.3T-2 + 1.59309x107T3 - 1.43688x109T-4 cal/g*K (250 to 3000 K).