The solubility of tungsten in Fe–Cu and Fe–Sn melts and the growth kinetics of W6Fe7 layer at the tungsten–melt interface at 1200°C are examined. The solubility of tungsten in these melts is well described by the following equations: lgXW = –4.3864 + 8.529XFe (Fe–Cu melt) and lgXW = = –4.544 + 14.293 XFe – 23.583 X 2Fe (Fe–Sn melt). The melt composition in the three-phase equilibrium W–W6Co7 melt is established: XFe = 4.1 ∙ 10–3, XW = 4.5 ∙ 10–5, the rest is copper (Fe–Cu melt), XFe = 0.111, XW =5.6 ∙ 10–4, and the rest is tin (Fe–Sn melt). The substantial difference in kFe–Sn > kFe–Cu at the same iron activity aFe is attributed to the impact of admixtures (Cu and Sn) on the growth of the W6Fe7 layer.
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References
C. Agte and J. Vacek, Tungsten and Molybdenum, National Aeronautics and Space Administration, Washington (1963).
Sintered Materials for Electrical Engineering and Electronics: Handbook [in Russian], Metallurgiya, Moscow (1981), p. 342.
O. K. Teodorovich, Yu. A. Isakov, R. V. Minakova, et al., “Effect of the inhomogeneous microstructure of tungsten–copper contacts on their wear resistance,” in: Electric Contacts and Electrodes [in Russian], Naukova Dumka, Kiev (1977), pp. 24–25.
V. V. Skorokhod, V. P. Titov, Z. V. Sichkar’, and M. M. Churakov, “Reaction of tungsten with melts in the Cu–Co system,” Powder Metall. Met. Ceram., 44, No. 5–6, 271–275 (2005).
T. B. Massalski, Binary Alloy Phase Diagrams, Vol. 2, ASM, Metals Park, Ohio (1986), p. 1124.
T. Takayama, Wey Mycong Yong, and T. Nishizawa, “Effect of magnetic transition on the solubility of alloying elements in bcc iron, fcc cobalt,” Trans. Jap. Inst. Metals, 22, No. 5, 315–325 (1981).
G. Kostakis, “Intermetallische fhasen des Zweistoffsistem Fe–W,” Z. Metallkunde, 76, No. 1, 34–36 (1985).
E. T. Henig, H. Hofman, and G. Petzow, “Die Konstitution von Fe–W–Ni Schwermetallegieruagen und ihr Einfluss auf die Mechanischen Eigenschaften,” in: Proc. 10th Planseeseminar, Vol. 2, Metallwerk Plansee, Reutte, Austria (1981), pp. 335–359.
G. W. Raynor and V. G. Riwlin, “Phase equilibria in iron ternary systems. 5. Critical evaluation of constitutions of certain ternary alloys containing iron, tungsten and a third metal,” Int. Metals Rev., 28, No. 2, 122–129 (1983).
F. A. Shank, Constitution of Binary Alloys, McGraw-Hill, New York (1970).
M. Hansen and K. Anderko, Constitution of Binary Alloys, McGraw-Hill, New York (1958).
I. LeMay and L. M.-D. Shettky, Copper in Ferrous Metals [Russian translation], Metallurgiya, Moscow (1988), p. 311.
T. B. Massalski, Binary Alloy Phase Diagrams, Vol. 1, ASM, Metals Park, Ohio (1986), p. 1100.
V. V. Skorokhod, V. P. Titov, M. M. Churakov, and R. V. Minakova, “Reaction of tungsten with liquid Co–Sn alloys,” Powder Metall. Met. Ceram., 40, No. 7–8, 101–104 (2001).
M. A. Turchanin, “Formation enthalpies of liquid alloys of copper with iron, cobalt, and nickel,” Metally, No. 5, 12–19 (1995).
G. I. Batalin and V. S. Sudavtsova, “Thermodynamic properties of liquid Fe–Cu alloys,” Izv. AN SSSR, Metally, No. 2, 43–49 (1980).
V. N. Eremenko, G. M. Lukashenko, and V. L. Pritula, “Thermodynamic properties of Fe–Sn melts,” Izv. AN SSSR, Metally, No. 1, 99–102 (1972).
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Translated from Poroshkovaya Metallurgiya, Vol. 48, No. 1–2 (465), pp. 3–11, 2009.
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Skorokhod, V.V., Titov, V.P. & M. M. Churakov*. Interaction of tungsten with iron–copper and iron–tin melts. Powder Metall Met Ceram 48, 1–7 (2009). https://doi.org/10.1007/s11106-009-9103-1
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DOI: https://doi.org/10.1007/s11106-009-9103-1