Skip to main content
SpringerLink
Log in

A mass-spectrometric study of the thermodynamics of the Fe−Cu and Fe−Cu−C(sat) systems at 1600°C

  • Physical Chemistry
  • Published:
Metallurgical Transactions B Aims and scope Submit manuscript

Abstract

The Knudsen cell-mass spectrometer combination has been used to study the Fe−Cu and Fe−Cu−C(sat) alloys at 1600°C. Activity coefficients in the Fe−Cu system are closely represented by the equations

$$\begin{gathered} \ln \gamma _{Fe} = 1.86N_{Cu}^2 + 0.03, (0< N_{Fe}< 0.7) \hfill \\ \ln \gamma _{Cu} = 2.25N_{Fe}^2 - 0.19, (0.7< N_{Fe}< 1.0) \hfill \\ \end{gathered} $$

with an uncertainty in the quadratic terms of about 5 pct. For the iron-rich carbon-saturated alloys, the activity coefficient of copper is given by the equation

$$\ln \gamma _{Cu} = 2.45(N'_{Fe} )^2 + 0.3N'_{Fe} + 0.03, (0< N'$$

to within an uncertainty of about 10 pct. N ′Fe represents the fraction NFe/(NFe+NCu), etc. The activity coefficient of iron in this region is found to be essentially constant at 0.69±0.05.

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

References

  1. G. K. Sigworth and J. F. Elliott:Metal Sci. J., 1974, vol. 8, pp. 298–310.

    CAS  Google Scholar 

  2. C. Petot and E. Bonnier:Bull. Soc. Chim., 1967, pp. 836–46.

  3. F. Vachet, P. Desré, and E. Bonnier:Compt. Rend., 1965, vol. 260, pp. 453–46.

    CAS  Google Scholar 

  4. Y. H. Chou: ScD. Thesis, Camegie Inst. of Technology, 1947.

  5. P. J. Koros and J. Chipman:Trans. AIME, 1956, vol. 206, pp. 1102–04.

    Google Scholar 

  6. M. Olette and M. Onillon:Compt. Rend., 1965, vol. 264C, pp. 3597–3600.

    Google Scholar 

  7. J. P. Morris and G. R. Zellars:Trans. AIME, 1956, vol. 206, pp. 1086–90.

    Google Scholar 

  8. F. C. Langenberg:Trans. AIME, 1956, vol. 206, pp. 1024–25.

    Google Scholar 

  9. W. Oelsen, E. Schürmann, and C. Florin:Arch. Eisenhüttenw., 1961, vol. 32, pp. 719–28.

    CAS  Google Scholar 

  10. A. Podgornik: quoted in Ref. 9..

    Google Scholar 

  11. F. Woolley and J. F. Elliott:Trans. TMS-AIME, 1967, vol. 239, pp. 1872–83.

    CAS  Google Scholar 

  12. Y. Tozaki, Y. Iguchi, S. Ban-ya, and T. Fuwa:Chemical Metallurgy of Iron and Steel, pp. 130–32, Iron and Steel Inst. London, 1973.

    Google Scholar 

  13. A. El'Khasan, K. Abdel-Aziz, A. A. Vertman, and a. M. Samarin:Izv. Akad. Nauk SSSR, Metal., 1966, no. 3, pp. 19–30.

    Google Scholar 

  14. T. Mori, D. Aketa, H. Ono, and H. Sugita:Tetsu To Hagane, 1960, vol. 46, pp. 1429–37.

    CAS  Google Scholar 

  15. T. Fuwa, M. Fugikawa, and s. Matoba:Tetsu To Hagane, 1960, vol. 46, pp. 235–37.

    Google Scholar 

  16. H. Schenck and G. Perbix:Arch. Eisenhüttenw., 1961, vol. 32, pp. 123–27.

    CAS  Google Scholar 

  17. H. Schenck and W. Spieker:Arch. Eisenhüttenw., 1959, vol. 30, pp. 641–48.

    CAS  Google Scholar 

  18. W. Oelsen, E. Schürmann, and G. Heinrichs:Arch. Eisenhüttenw., 1959, vol. 30, pp. 649–54.

    CAS  Google Scholar 

  19. G. Urbain:Arch. Eisenhüttenw., 1961, vol. 32, pp. 303–04.

    CAS  Google Scholar 

  20. G. R. Belton and R. J. Fruehan:Met. Trans., 1971, vol. 2, pp. 291–96.

    Article  CAS  Google Scholar 

  21. G. R. Belton and R. J. Fruehan:J. Phys. Chem., 1967, vol. 71, pp. 1402–09.

    Google Scholar 

  22. E. T. Turkdogan and L. S. Darken:Trans. TMS-AIME, 1968, vol. 242, pp. 1997–2005.

    Google Scholar 

  23. G. Perbix: D. Ing. Dissertation, Tech. Hochschule, Aachen, 1969.

  24. G. R. Belton and R. J. Fruehan:Trans. TMS-AIME, 1969, vol. 245, pp. 113–17.

    CAS  Google Scholar 

  25. G. R. Belton and R. J. Fruehan:Met. Trans., 1970, vol. 1, pp. 781–87.

    CAS  Google Scholar 

  26. U. V. Choudary: University of Pennsylvania, Philadelphia, Pa., unpublished research, 1974.

  27. J. Chipman:Met. Trans., 1972, vol. 3, pp. 55–64.

    Article  CAS  Google Scholar 

  28. J. Chipman:Met. Trans., 1970, vol. 1, pp. 2163–68.

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemistry, Texas A& M University, 77843, College Station, Tex.

    U. V. Choudary (Post Doctoral Fellow)

  2. Monmouth Processing Company, 07712, Ocean Township, N. J.

    J. A. Serkin (Vice-President)

  3. Department of Metallurgy and Materials Science, University of Pennsylvania, 19174, Philadelphia, PA

    G. R. Belton (Professor)

Authors
  1. U. V. Choudary
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. J. A. Serkin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. G. R. Belton
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Choudary, U.V., Serkin, J.A. & Belton, G.R. A mass-spectrometric study of the thermodynamics of the Fe−Cu and Fe−Cu−C(sat) systems at 1600°C. Metall Trans B 6, 399–403 (1975). https://doi.org/10.1007/BF02913824

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02913824

Keywords

Search

Navigation