Computer Science
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.2643k&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 56, Issue 7, pp.2643-2655
Computer Science
Scientific paper
Relative enthalpies for melts in the CS-CAS 2 -C 2 AS system have been measured by combination of high-temperature drop calorimetry and solution calorimetry of the same sample at 298 K. From the measured values of relative enthalpy and from those determined using the literature data the temperature-composition dependences of relative enthalpy of melts related to 1 mol of mixture of the CS-CAS 2 -C 2 AS system and/or C(CaO)-A(Al 2 O 3 )-S(SiO 2 ) system were determined. From these dependences the values of enthalpy of mixing in formation of melts of the CS-CAS 2 -C 2 AS system either from the melts of CS, CAS 2 and C 2 AS, or from C, A and S, as well as the values of partial molar enthalpies of mixing of C, A and S in this system in the temperature interval 1600-1950 K, were calculated. The analysis has shown that the values of enthalpy of mixing in formation of the equilibrium melts in the CS-CAS 2 -C 2 AS system from melts of components CS, CAS 2 and C 2 AS and/or C, A and S are mostly negative. In the region of compositions close to the binary system CAS 2 -C 2 AS and in this system itself, the melts in the temperature interval 1600-1950 K within the error range of H mix behave as the athermic solutions. The formation of the athermic solutions in the CAS 2 -C 2 AS system shows that new structural particles are not created in mixing of both basic substances. Different structural roles of oxides are also evident.
Adamkovi Ová Katarína
Kosa Ladislav
Proks Ivo
Tarina Igor
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