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600°C Section of the Fe–FeS–NiS–Ni Phase Diagram

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Abstract

The 600°C section of the Fe–FeS–NiS–Ni phase diagram was studied by optical and electron microscopy techniques, x-ray diffraction, and electron probe x-ray microanalysis. The results agree with the most reliable data available in the literature. The solid-solution regions identified are those of (Fe z Ni1 – z )3 ± δS2(high-temperature heazlewoodite structure), (Fe z Ni1 – z )S1 + δ, (Fe z Ni1 – z )9 + δS8(pentlandite structure), α-(Fe,Ni), and γ-(Fe,Ni). The section also contains seven two-phase and three three-phase regions. The S content of the monosulfide solid solution attains 50.8 at. % at Ni : (Ni + Fe) = 0.6 and 54.0 at. % at Ni : (Ni + Fe) = 0.2. The heazlewoodite solid solution contains up to 26 at. % Fe (at 44.3 at. % S). The highest Ni content of the pentlandite solid solution is 22.5 at. % at 47.5 at. % S and 32.0 at. % at 46.2 at. % S.

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Authors and Affiliations

  1. Institute of Mineralogy and Petrography, Siberian Division, Russian Academy of Sciences, pr. akademika Koptyuga 3, Novosibirsk, 630090, Russia

    E. F. Sinyakova

  2. Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent'eva 3, Novosibirsk, 630090, Russia

    V. I. Kosyakov

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Sinyakova, E.F., Kosyakov, V.I. 600°C Section of the Fe–FeS–NiS–Ni Phase Diagram. Inorganic Materials 37, 1130–1137 (2001). https://doi.org/10.1023/A:1012592924940

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