caa a22 4500 46322342X CHVBK 20180405153219.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10853-007-1752-1 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1752-1 Thermodynamic analysis of thermite reactions for synthesizing Ni-based alloys [Elektronische Daten] [Wenjun Xi, Heping Zhou, Chaoli Ma, Huiping Duan, Tao Zhang] The equilibrium compositions of a thermite reaction system (Fe2O3+Cr2O3+CrO3+NiO+O2+N2+TiO2+C+S+CaO+Al), which was used to prepare Ni-based alloys, were predicted by means of the free energy minimization method. The effects of the reactant contents on the equilibrium compositions and the adiabatic temperature of the thermite reaction system were analyzed. The microstructure of the Ni-based alloys was investigated. The thermodynamic analysis indicated that the products of the thermite reaction system contained primarily Al2O3, Fe, Ni, Cr, Ni3Al and NiAl, due to impurities C, N2 and S in the raw materials, there could also exist TiC, Cr7C3, CrN, CaS and TiN in the equilibrium products. The amount of Ni3Al and NiAl in the products increased with increase of the aluminum content in the starting materials. The microstructure investigation showed that the Ni-based alloys consisted of austenite, ferrite, Ni3Al and NiAl. The existence of Ni3Al and NiAl in the Ni-based alloys reconciled with the predictions of thermodynamic analysis, suggesting the free energy minimization method is useful in designing advanced materials with multiple components by thermite reaction technique. Springer Science+Business Media, LLC, 2007 Xi Wenjun School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut Zhou Heping Department of Materials Science and Engineering, Tsinghua University, 100083, Beijing, P.R. China aut Ma Chaoli School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut Duan Huiping School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut Zhang Tao School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/20(2007-10-01), 8489-8495 0022-2461 42:20<8489 2007 42 10853 https://doi.org/10.1007/s10853-007-1752-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1752-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xi Wenjun School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut NATIONALLICENCE 700 1- Zhou Heping Department of Materials Science and Engineering, Tsinghua University, 100083, Beijing, P.R. China aut NATIONALLICENCE 700 1- Ma Chaoli School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut NATIONALLICENCE 700 1- Duan Huiping School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut NATIONALLICENCE 700 1- Zhang Tao School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 100083, Beijing, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/20(2007-10-01), 8489-8495 0022-2461 42:20<8489 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer