Thermodynamic properties of liquid alloys systems Fe - Ni - O - Me - Si
DOI:
https://doi.org/10.18372/2306-1472.34.1555Abstract
In the isoperabelic calorimeter at 1870 are determined partial and integral enthalpies of mixture of liquid alloys of systems Fe – Ni – O - Me and Fe – Ni – O – Me – Si, where Me – IVb-, Vb-, VIb-metals. The basis of alloy was served invars with the contents of oxygen by 0,06 %. Established, that the melts of systems Fe – Ni – O – IVb- (Vb-)-metals are characterized by strong interparticle interplay. The components of the maiden portions IVb- (Vb-)-metals in Fe – Ni – O melts are accompanied by very large exothermal effects (from – 400 up to – 1000 kJ/mol), which one considerably surpass those in double melts Fe(Ni) – Me. The subsequent portions IVb- (Vb-)-metals caused smaller allocation of a heat (in limits from – 100 up to – 30 kJ/mol), that is conditioned by a decrease of the contents of dissolved oxygen. The partial enthalpies of mixture of molybdenum and tungsten in melts Fe – Ni – O are close to those in a nickel, and for a chromium exceed them. Is rotined, that D` HSi in liquid alloys Fe – Ni – O – Mo (– 450 kJ/mol) considerably surpass that are characteristic for a nickel (– 50 kJ/mol). It is explained by interplay of silicon with the stayed dissolved oxygen in initial melts of a system Fe – Ni – O – Mo.
References
Судавцова В.С., Савченко В.С., Ющенко К.А. Термо-химические свойства двойных сплавов системы Ni – O в жидком состоянии //Изв. АН СССР. Неоргани-ческие материалы. –1990. – Т. 26, № 7. – С. 1775–1778.
Selected Values of the Thermodynamic Properties of Binary Alloys / K. Hultgen, P.D. Desai, F.T. Hawkins еt al. − ASM. New York, 1973. – 573 р.
Термодинамические свойства неорганических веществ / под ред. А.П. Зефірова. − М.: Атомиздат, 1985. – 460 с.
Janke D., Fischer W.A. Das Losungsverhalten des Sauerstoffs in Nickelbosischelzen // Arch.Eisenhuttenwes. –1975. – Т. 46, № 5. – S. 297–304.
Аверин А.А. Растворимость кислорода, азота и активность элементов-раскислителей в расплавах на основе железа, кобальта, никеля и хрома: автореф. дис. … канд. хим. наук. − М.: Ин-т металлургии им. Байкова, 1968. – 32 с.
