Abstract
We have studied the solubility at 1200°C of tungsten in Cu - Co melts and the growth kinetics of a W6Co7 layer at the tungsten — melt interface. We have established the composition of the melt in the three-phase equilibrium tungsten — W6Co7 — melt: 0.0195 Co, 4.8 · 10−5 W, the rest is Cu (in atomic fractions). In the studied composition range for the melt, the solubility of tungsten is described well by the expression: lgXW = −7.117 + 25.7 · XCo 1/2 − 41.06 · XCo, where XW and XCo are the atomic fractions of the corresponding elements in the melt. We have determined the correlation between the growth rate for a layer of tungsten-containing phase at the tungsten — melt interface and the thermodynamic characteristics of the melt.
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Translated from Poroshkovaya Metallurgiya, Nos. 5–6(443), pp. 81–86, May–June, 2005.
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Skorokhod, V.V., Titov, V.P., Sichkar', Z.V. et al. Reaction of Tungsten with Melts in the Cu - Co System. Powder Metall Met Ceram 44, 271–275 (2005). https://doi.org/10.1007/s11106-005-0091-5
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DOI: https://doi.org/10.1007/s11106-005-0091-5