Liquidus surface of the quasi-ternary system Cu2S–In2S3–FeS

Ikhtiyar Bahram oglu Bakhtiyarly; Ruksana Jalal kizi Kurbanova; Shahri Seyfaly kizi Abdullaeva; Ziyafat Mamed kizi Mukhtarova; Fatmahanum Mamed Mammadova

doi:10.17308/kcmf.2021.23/3293

Ikhtiyar Bahram oglu Bakhtiyarly Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan https://orcid.org/0000-0002-7765-0672
Ruksana Jalal kizi Kurbanova Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan https://orcid.org/0000-0001-6467-0079
Shahri Seyfaly kizi Abdullaeva Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan
Ziyafat Mamed kizi Mukhtarova Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan https://orcid.org/0000-0001-5962-3710
Fatmahanum Mamed Mammadova Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan

DOI: https://doi.org/10.17308/kcmf.2021.23/3293

Keywords: section, system, quasi-ternary, eutectic, liquidus

Abstract

A projection of the liquidus surface of the quasi-ternary system Cu₂S-In₂S₃-FeS was constructed as a result of experimental studies of quasi-binary and non-quasi-binary sections and based on the data on binary systems comprising a ternary system.
Each section (six quasi-binary and four non-quasi-binary ones) was studied separately using complex methods of physicochemical analysis: differential thermal analysis, X-ray phase analysis, and microstructural analysis.
It was found that the quasi-ternary system Cu₂S-In₂S₃-FeS has six fields of primary crystallisation of separate phases and eleven monovariant equilibrium curves along which two phases are co-crystallised. Non-variant equilibrium points were obtained through the extrapolation of the direction of monovariant equilibrium curves.
The quasi-ternary system Cu2S-In2S3-FeS is characterised by 17 non-variant equilibrium points, where Е1-Е5 are triple eutectic points.
The projection diagram of the liquidus surface is characterised by three crystallisation fields of the initial componets (Cu₂S, In₂S₃, FeS), four fields of binary compounds, and one field of a complex compound (CuFeIn₃S₆).
Since complete solubility of the initial components in liquid and solid states is observed in the quasi-binary section CuIn₅S₈‑FeIn₂S₄, the fields of primary crystallisation of CuIn₅S₈ and FeIn₂S₄ are absent; they are replaced by an unlimited solid solution based on these components.
The fields of primary crystallisation of Cu₂S, FeS, and CuInS₂ are the most extensive in the ternary system Cu₂S-In₂S₃-FeS. The reactions occurring at monovariant equilibrium points are presented.

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Author Biographies

Ikhtiyar Bahram oglu Bakhtiyarly, Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan

DSc in Chemistry,
Professor, Institute of Catalysis and Inorganic Chemistry
of the National Academy of Sciences of Azerbaijan,
Baku, Azerbaijan; e-mail: ibakhtiyarli@mail.ru

Ruksana Jalal kizi Kurbanova, Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan

DSc of Philosophy in
Chemistry, Associate Professor, Institute of Catalysis
and Inorganic Chemistry of the National Academy of
Sciences of Azerbaijan, Baku, Azerbaijan

Shahri Seyfaly kizi Abdullaeva, Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan

postgraduate
student, Junior Researcher, Institute of Catalysis and
Inorganic Chemistry of the National Academy of
Sciences of Azerbaijan, Baku, Azerbaijan; e-mail: sehri.
abdullayeva.83@mail.ru

Ziyafat Mamed kizi Mukhtarova, Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan

DSc of Philosophy
in Chemistry, Associate Professor, Institute of
Catalysis and Inorganic Chemistry of the National
Academy of Sciences of Azerbaijan, Baku, Azerbaijan;
e-mail ziyafatmuxtarova@mail.ru

Fatmahanum Mamed Mammadova, Institute of Catalysis and Inorganic Сhemistry, Azerbaijan National Academy of Sciences, 113 H. Javid pr., Baku AZ-1143, Azerbaijan

Researcher,
Institute of Catalysis and Inorganic Chemistry of the
National Academy of Sciences of Azerbaijan, Baku,
Azerbaijan; e-mail: Fatma.mammadova.1959@mail.ru

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