Topic
Ternary operation
About: Ternary operation is a research topic. Over the lifetime, 30121 publications have been published within this topic receiving 457633 citations.
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TL;DR: In this article, the existence ranges of ternary solid solutions Fe1−xM′xO (M = Co, Ni) have been estimated using thermodynamic modelling by CALPHAD methods.
Abstract: The existence ranges of ternary solid solutions Fe1–xM′xO (M = Co, Ni) have been estimated using thermodynamic modelling by CALPHAD methods: a complete series of mixed crystals Fe1–xCoxO is stable only at higher temperatures ≥ 900 °C. Below the solid solution shows a miscibility gap due to the different redox potentials [p(O2) = f(T)] of the binary phases “FeO” and CoO. Hence CoO becomes reduced into metallic cobalt while “FeO” is oxidised into Fe3O4. The pseudo binary system FeO/NiO shows solubility ranges only at the border of the binary oxides, the phases built areα(Fe1–xNixO) (x ≤ 0.13) and α′(FeyNi1–yO) (y ≤ 0.60, ≤ 1400 °C). Due to the broader difference of redox potentials [p(O2) = f(T)] of “FeO” and NiO a complete series of mixed crystals cannot exist. In application of the results of thermodynamic modelling the syntheses of mixed crystals Fe1–xCoxO and their characterisation by X-ray diffraction and thermal analysis succeeds. The mixed phases crystallise in the halite structure type (space group Fmm) with a progress of the lattice constants corresponding to the Vegard rule [a(Fe1–xCoxO) = 430.0(2) pm (x = 0), 427.8(2) pm (x = 0.5), 425.0(2) pm (x = 1)].(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
13 citations
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TL;DR: The Zintl compound CaAl2Si2 peritectically decomposes to a new ternary cubic Laves phase Ca(Al,Si)2 and an Al-Si eutectic at temperatures above 750 °C under a pressure of 13 GPa, which is the first superconducting Lavesphase compound composed solely of commonly found elements.
Abstract: The Zintl compound CaAl2Si2 peritectically decomposes to a new ternary cubic Laves phase Ca(Al,Si)2 and an Al–Si eutectic at temperatures above 750 °C under a pressure of 13 GPa. The ternary Laves ...
13 citations
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TL;DR: In this article, Zn microalloyed with Al, Mn, Cu, Ag and Li was cast, annealed and extruded, and the results showed that addition of multiple trace elements causes significant change in the microstructures, mechanical properties and corrosion behavior of Zn-0.35Li alloy.
13 citations
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TL;DR: In this paper, ground-based measurements of the Soret coefficient along the binary borders of the Gibbs triangle of the highly polar and hydrogen bonding ternary DCMIX3-system water/ethanol/triethylene glycol are discussed.
Abstract: Thermodiffusion in ternary mixtures is considered prototypic for the Soret effect of truly multicomponent systems. We discuss ground-based measurements of the Soret coefficient along the binary borders of the Gibbs triangle of the highly polar and hydrogen bonding ternary DCMIX3-system water/ethanol/triethylene glycol. All three Soret coefficients decay with increasing concentration, irrespective of the choice of the independent component, and show a characteristic sign change as a function of temperature and/or composition. With the exception of triethylene glycol/ethanol at high temperatures, the minority component always migrates toward the cold side. All three binaries exhibit temperature-independent fixed points of the Soret coefficient. The decay of the Soret coefficient with concentration can be related to negative excess volumes of mixing. The sign changes of the Soret coefficients of the binaries allow to draw far-reaching conclusions about the signs of the Soret coefficients of the corresponding ternary mixtures. In particular, we show that at least one ternary composition must exist, where all three Soret coefficients vanish simultaneously and no steady-state separation is observable.
13 citations
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TL;DR: In this paper, the structural, elastic, electronic, and optical properties of Perovskite-type (Halide-Perovskites) barium-based MBaF3 (M = ǫ and In) compounds are investigated.
13 citations