Abstract
We have studied the heat capacity and enthalpy of LaNi5 at low and high temperatures. Based on low-temperature measurements of the heat capacity, we have calculated the values of the enthalpy, entropy, and reduced Gibbs energy of the intermetallic under standard conditions. We have determined the temperature dependences of the thermodynamic functions for LaNi5 in the temperature range from 298.15 K to 1542 K.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Yu. M. Solonin, L. A. Kolomiets, and V. V. Skorokhod, The Alloys —Hydrogen Sorbents for Ni-Mn Current Sources [in Russian], Kiev (1993), 63 p. (Preprint/National Academy of Sciences of Ukraine, Institute for Problems of Materials Science, No. 93-5).
A. Percheron-Guegan, C. Lartigue, and J. C. Achard, “Correlations between the structural properties, the stability and the hydrogen content of substituted LaNi5 compounds,” J. Less-Common Metals, 109, No.2, 207–209 (1985).
S. Hasu, H. H. Heuman, N. Marzouk, et al., “Specific heats of LaNi5, CeNi5, PrNi5, NdNi5 and GdNi5 between 1.6 and 4 K,” J. Phys. Chem. Sol., 32, 2779–2783 (1971).
W. E. Wallace, “Bonding of metal nitrogen in relation to the characteristics of hydrogen storage materials,” J. Less-Common Metals, 88, No.1, 141–157 (1982).
N. Marzouk, R. S. Craig, and W. E. Wallace, “Heat capacity and electrical resistivity of some lanthanide-nickel (LnNi5) compounds between 5 and 300 K,” J. Phys. Chem. Sol., 34, 15–21 (1973).
Dieter Ohlendorf and Howard Flotow, “Heat capacities and thermodynamic functions of LaNi5H0.36 and LaNi5H6.39 from 5 to 300 K,” J. Less-Common Metals, 73, No.1, 25–32 (1980).
K. Yamaguchi, D.-Y. Kim, M. Ohtsuka, and K. Hagaki, “Heat content and heat of formation measurements of RNi5+x alloys (R = La, Ce, Pr or Nd) and heat balance in a reduction-diffusion process,” J. Alloys Comp., 221, 161–168 (1995).
R. Hultgren, P. D. Desai, D. T. Hawkins, et al., Selected Values of the Thermodynamic Properties of the Elements, ASM International, Metal Park, Ohio (1973).
A. S. Bolgar, A. I. Kriklya, A. P. Suodis, and A. V. Blinder, “Low-temperature heat capacity of praseodymium, neodymium, and samarium sesquicarbides,” Zhurn. Fiz. Khim., 72, No.4, 439–443 (1998).
A. S. Bolgar, N. P. Gorbachuk, and A. V. Blinder, “Enthalpies of silicides Gd5Si3, Gd5Si4, GdSi, GdSi1.88 in the temperature range 298.15–2200 K. Enthalpies of melting,” Teplofiz. Vys. Temperatur, 34, No.4, 541–545 (1996).
V. F. Litvinenko, A. S. Bolgar, V. B. Muratov, et al., Treatment of Experimental Data on Enthalpy Taking into Account Additional Conditions, Institute for Problems of Materials Science, Academy of Sciences of the Ukrainian SSR, Kiev (1984), Deposited in VINITI, September 19, 1984; No. 6300B.
Author information
Authors and Affiliations
Additional information
__________
Translated from Poroshkovaya Metallurgiya, Nos. 9–10(445), pp. 67–73, September–October, 2005.
Rights and permissions
About this article
Cite this article
Gorbachuk, N.P., Muratov, V.B. Heat Capacity and Enthalpy of LaNi5 in the Temperature Range 57–1542 K. Powder Metall Met Ceram 44, 467–471 (2005). https://doi.org/10.1007/s11106-006-0011-3
Received:
Issue Date:
DOI: https://doi.org/10.1007/s11106-006-0011-3