Thermodynamic optimization of the Ni-Al-Cr-Co system on the base of experimental phase data

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Authors	POPOVIČ Jiří BURŠÍK Jiří BROŽ Pavel
Year of publication	2005
Type	Article in Proceedings
Conference	JUNIORMAT ' 05
MU Faculty or unit	Faculty of Science
Citation
Field	Physical chemistry and theoretical chemistry
Keywords	thermodynamics; phase equilibria; microstructure; nickel; aluminium; chrom; cobalt
Description	The Ni-Al-Cr-Co system has been studied in the gamma + gamma' two-phase field. The phase boundaries and chemical composition of gamma + gamma' phase were calculated by means of the Thermocalc software. The experimental chemical composition of existing phases was measured by means of energy-dispersive X-ray analysis using a scanning mode in transmission electron microscope. The calculated results data were compared with experimental and a necessity of modification of thermodynamic parameters was found. In order for the calculated phase boundaries to match the experimental data, thermodynamic description must be modified.
Related projects:	Physical and chemical properties of advanced materials and structures