Thermodynamic Assesment of the Ci-Ti System in Microalloyed Copper Base Alloys
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The correlations made between thermodynamic and kinetic data of the heterogeneous systems provided insight into the alloys properties. Experimental researches presented in this paper refer to the thermodynamics of Cu-Ti binary system for very low concentrations of titanium in copper from 0.006⋅10−2 ÷ 0.340⋅10−2 mole fractions at 1372 K, at 1423 K temperatures. By electrochemical method the thermodynamics activities and activity coefficients at 1372 K, 1423 K were determined. The Associated Solution Model (ASM) parameters have been used to describe the thermodynamic properties of the Cu-Ti dilute solutions. Analytical expression has been derived to express the activity of titan in copper and the activity coefficient. The first and second order Wagner’s selfinteraction parameters were given as a function of ASM parameters.
- 2006 fascicula9 nr2