Abstract
An extension of the associated solution model is developed and applied to the Cu-O liquid phase. Associated species “Cu2O” in the liquid solution are assumed, which interact with the surrounding free Cu and O atoms. All thermodynamic properties and the phase diagram calculated from this model are in good agreement with the experimental information. The success of this mathematical description is, of course, no proof for the physical existence of associated species. A consistent set of thermodynamic data of the various solid, liquid, and gaseous phases is given by this comprehensive evaluation. In addition, linear approximations for the Gibbs energies of reaction of formation and the interaction coefficients are offered. A metastable liquidus of the compound CuO at elevated pressure is predicted, the congruent melting point being 1228 °C at δC atP O 2 = 24.4 atm (2.47 MPa).
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K. Sano and H. Sakao:J. Japan Inst. Metals, 1955, vol. 19, pp. 431–38.
E. S. Tankins, J. F. Erthal, and M. K. Thomas:J. Electrochem. Soc., 1965, vol. 112, pp. 446–50.
G. R. Belton and E. S. Tankins:Trans. TMS-AIME, 1965, vol. 233, pp. 1892–98.
W. Pluschkell and H. J. Engell:Z. Metallkde., 1965, vol. 56, pp. 450–52.
W. A. Fischer and W. Ackermann:Arch. Eisenhüttenwes., 1966, vol. 37, pp. 43–47.
T. C. Wilder:Trans. TMS-AIME, 1966, vol. 236, pp. 1035–40.
H. Rickert and H. Wagner:Electrochim. Acta, 1966, vol. 11, pp. 83–91.
C. M. Diaz and F. D. Richardson:Trans. Inst. Mining Metall., 1967, vol. C 76, pp. 196–203.
J. Osterwald: Habilitation-Thesis, T. U. Berlin, 1965, and J. Osterwald, G. Reimann, and W. Stichel: Z.Phys. Chem. N.F., 1969, vol. 66, pp. 1–7.
G. Reimann: Dr.-Ing. Dissertation, T. U. Berlin, 1967, and J. Osterwald, G. Reimann, and W. Stichel: Z.Phys. Chem. N.F., 1969, vol. 66, pp. 1–7.
W. Stichel: Dr.-Ing. Dissertation, T. U. Berlin, 1967, and J. Osterwald, G. Reimann, and W. Stichel: Z.Phys. Chem. N.F., 1969, vol. 66, pp. 1–7.
U. Block and H. P. Stuewe:Z. Metallkde., 1969, vol. 60, pp. 709–12.
R.J. Fruehan and F.D. Richardson:Trans. TMS-AIME, 1969, vol. 245, pp. 1721–26.
M.M.A. El-Naggar and N.A.D. Parlee:Metall. Trans., 1970, vol. 1, pp. 2975–77.
E. S. Tankins:Can. Met. Quart., 1970, vol. 9, pp. 353–57.
C.R. Nanda and G.H. Geiger:Metall. Trans., 1970, vol. 1, pp. 1235–43.
K.T. Jacob and J.H.E. Jeffes:Trans. Inst. Mining Metall., 1971, vol. C 80, pp. 32–41.
T. Oishi, Z. Kozuka, and J. Moriyama:Trans. Japan Inst. Met., 1971, vol. 12, pp. 410–16.
W.A. Fischer and D. Janke:Z. Metallkde., 1971, vol. 62, pp. 747–51.
E. S. Tankins and N.A. Gokcen:High Temp. Sci., 1972, vol. 4, pp. 393–404.
A.D. Kulkarni:Metall. Trans., 1973, vol. 4, pp. 1713–21.
K. E. Oberg, L. M. Friedman, W. M. Boorstein, and R. A. Rapp:Metall. Trans., 1973, vol. 4, pp. 61–67.
H.P. Seow and A. K. Biswas:Proc. Australas. Inst. Min. Metall., 1973, vol. 245, pp. 39–45.
K. Fitzner and Z. Moser:Met. Technol., 1979, vol. 6, pp. 273–75.
N. Kemori, J. Katayama, and Z. Kozuka:Trans. Japan Inst. Met., 1980, vol. 21, pp. 275–84.
S. Otsuka and Z. Kozuka:Metall. Trans. B, 1981, vol. 12B, pp. 501–07.
S. H. Sadat-Darbandi: Dr.-Ing. Dissertation, T. U. Berlin, 1977.
E. Heyn:Z. Anorg. Chem., 1904, vol. 39, pp. 1–23.
R.E. Slade and F.D. Farrow:Proc. Roy. Soc. (London), 1912, vol. A87, pp. 524–34.
R. Vogel and W. Pocher:Z. Metallkde., 1929, vol. 21, pp. 333–37.
H. S. Roberts and F. H. Smyth:J. Amer. Chem. Soc., 1921, vol. 43, pp. 1061–79.
H. Rickert, H. Wagner, and R. Steiner:Chemie-Ing.-Techn., 1966, vol. 38, pp. 618–22.
J. Osterwald:Z. Metallkde., 1968, vol. 59, pp. 573–76.
J. Gerlach, J. Osterwald, and W. Stichel:Z. Metallkde., 1968, vol. 59, pp. 576–79.
U. Kuxmann and K. Kurre:Erzmetall, 1968, vol. 21, pp. 199–209.
A. Phillips and E.N. Skinner:Trans. AIME, 1941, vol. 143, pp. 301–11.
R.L. Pastorek and R.A. Rapp:Trans. TMS-AIME, 1969, vol. 245, pp. 1711–20.
O. Kubaschewski, E. LL. Evans, and C. B. Alcock:Metallurgical Thermochemistry, 4th ed., Pergamon Press, Oxford, 1967, p. 423.
I. Barin and O. Knacke:Thermochemical Properties of Inorganic Substances, Springer-Verlag, Berlin, 1973, pp. 255, 266, 584–86.
A.S. Jordan:Metall. Trans., 1970, vol. 1, pp. 239–49.
K. Osamura and B. Predel:Trans. Japan Inst. Met., 1977, vol. 18, pp. 765–74.
R.C. Sharma and Y.A. Chang:Metall. Trans. B, 1979, vol. 10B, pp. 103–08.
R.C. Sharma and Y.A. Chang:Z. Metallkde., 1979, vol. 70, pp. 104–08.
R.C. Sharma and Y.A. Chang:Metall. Trans. B, 1980, vol. 11B, pp. 139–46.
R.C. Sharma and Y.A. Chang:Metall. Trans. B, 1980, vol. 11B, pp. 575–83.
R. P. Goel, H. H. Kellogg, and J. Larrain:Metall. Trans. B, 1980, vol. 11B, pp. 107–17.
A. F. Guillermet, M. Hillert, B. Jansson, and B. Sundman:Metall. Trans. B, 1981, vol. 12B, pp. 745–54.
I. Prigogine and R. Defay:Chemische Thermodynamik, Leipzig, 1962, pp. 428–54.
K. Wohl:Trans. Am. Inst. Chem. Eng., 1946, vol. 42, pp. 215–49.
NASA SP-3071:Handbook of Chemistry and Physics, R. C. Weast, ed., 56th ed., CRC Press, Cleveland, OH, 1975, p. F 79.
R. Hultgren, P. D. Desai, D.T. Hawkins, M. Gleiser, K. K. Kelley, and D. D. Wagman:Selected Values of the Thermodynamic Properties of the Elements, ASM, Metals Park, OH, 1973, pp. 149, 359.
R. Schmid: Habilitation-Thesis, T. U. Clausthal, 1980.
M. Hansen and K. Anderko:Constitution of Binary Alloys, 2nd ed., McGraw-Hill Book Co., New York, NY, 1958, p. 604.
J.F. Elliott:Metall. Trans. B, 1976, vol. 7B, pp. 17–33.
H.H. Kellogg:J. Chem. Eng. Data, 1969, vol. 14(1), pp. 41–44.
G.K. Sigworth and J.F. Elliott:Can. Met. Quart., 1974, vol. 13, pp. 455–61.
P. Behrmann: Dr.-Ing. Dissertation, T. U. Clausthal, 1979.
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Schmid, R. A thermodynamic analysis of the Cu-O system with an associated solution model. Metall Trans B 14, 473–481 (1983). https://doi.org/10.1007/BF02654367
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DOI: https://doi.org/10.1007/BF02654367