Thermodynamic investigation of Co–Cr alloys. II. Heat capacity measurements in the temperature interval 318–1660 K

Abstract

The thermodynamic properties of several Co–Cr alloys have been determined in the temperature interval 318–1660 K using differential scanning calorimetric (DSC) technique. The compositional range of the alloys investigated extended from 10 to 90 wt% Cr. Heat capacity equations, Cp (J/mol K) =A+B·T (K), were derived in the temperature interval of interest to fit the experimental data. The experimental Cp values are compared with those from the Neumann–Kopp rule. The phase transformations observed in the present measurements are discussed in the light of the phase diagram information available in the literature for the Co–Cr binary system.