Skip to main content
SpringerLink
Log in

The heats of formation of UAl2, UAl3, and UAl4

  • Published:
The Soviet Journal of Atomic Energy Aims and scope

Abstract

Preparations of the intermetallic compounds UAl2, UAl3 and UAl4 were obtained by high-temperature interdiffusion of aluminum and dispersed uranium, prepared by decomposing its hydride then grinding the product and heating the powder obtained. Debye x-radiographic investigation showed that the preparations obtained consisted of one phase and the parameters of their structures were close to those published earlier. The amount of hydrogen evolved during separate solution of the preparations and the starting components in a specially selected solvent (mixture of HCl, H3PO4, Na2SiF6, H2PtCl5 and CuSO4· 5H2O) Indicated that the preparations had the compositions; UAl1.997, UAl2.994 and UAl3.997.

The differences in the heats of solution of these preparations and appropriate mixtures of their components gave die heats of formation (−ΔH°293)UAl2, UAl3 and UAl4, which were 22.3±2.4, 25.2±2.2 and 31.2±3.1 kcal/mole, respectively.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Literature cited

  1. R. E. Rundle and A. S. Wilson, Acta Cryst. 2, 148 (1949).

    Google Scholar 

  2. B. S. Borie, J. Metals 3, 800 (1951).

    Google Scholar 

  3. G. B. Bokii, Introduction to Crystallochemistry, Moscow State Univ. Press, 1954, p. 300 [in Russian].

  4. F. Weibke and O. Kubaschewski, Thermochemie der Legierungen. Berlin, 1943, p. 11.

  5. O. Kubaschewski and E. Evans, Thermochemistry in Metallurgy, Foreign Lit. Press, 1954, pp. 98–99 [Russian translation].

  6. M. M. Popov, Thermometry and Calorimetry, Moscow State Univ. Press, 1954, p. 382 [in Russian].

  7. Ibid, p. 773.

  8. Ibid, p. 321.

Download references

Authors
  1. M. I. Ivanov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. V. A. Tumbakov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. N. S. Podol'skaia
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

The authors would like to thank N. T. Chebotarev and P. N. Petrov for the x-radiographic analyses of the preparations, T. S. Men'shikova for the metallographic investigation and L. M. Kopytin for his valuable advice and interest in the work.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ivanov, M.I., Tumbakov, V.A. & Podol'skaia, N.S. The heats of formation of UAl2, UAl3, and UAl4 . The Soviet Journal of Atomic Energy 5, 1007–1011 (1958). https://doi.org/10.1007/BF01587536

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01587536

Keywords

Search

Navigation